Question 1

ATV212 unshielded cable length without motor choke is not provided in catalog, please provide clear information on maximum cable length allowed to use with ATV212 ?

Accepted Answer

Regarding the clarification related to ATV212 motor cable length, below are the validated information after the tests and validation process at factory, For reference ATV212H075N4 to ATV212HD15N4:***********************************************************1- Maximum cable length for shielded motor cable, with and without filter (motor choke or additional EMC filter) The cable length for this configuration is 25m without motor choke and 100m with motor choke (without EMC compliance). The cable length for this configuration is 20m without filter (with EMC compliance Category C3).2- Maximum cable length for un-shielded motor cable, with and without filter (motor choke or additional EMC filter). The cable length for this configuration is 50m without motor choke and 150m with motor choke (without EMC compliance).For reference ATV212HD18N4 to ATV212HD45N4:***********************************************************1- Maximum cable length for shielded motor cable, with and without filter (motor choke or additional EMC filter) The cable length for this configuration is 25m without motor choke and 150m with motor choke (without EMC compliance). The cable length for this configuration is 20m without filter (with EMC compliance Category C3).2- Maximum cable length for un-shielded motor cable, with and without filter (motor choke or additional EMC filter). The cable length for this configuration is 50m without motor choke and 300m with motor choke (without EMC compliance).For ATV212HD55N4 and ATV212HD75N4:*************************************************1- Maximum cable length for shielded motor cable, with and without filter (motor choke or additional EMC filter) The cable length for this configuration is 25m without motor choke and 150m with motor choke (without EMC compliance). The cable length for this configuration is 20m without filter (with EMC compliance Category C3).2- Maximum cable length for un-shielded motor cable, with and without filter (motor choke or additional EMC filter). The cable length for this configuration is 50m without motor choke and 300m with motor choke (without EMC compliance).

Question 2

TC300 thermostat shows override text.

Accepted Answer

Issue:TC300 thermostat, deluxe model, temperature setpoint is changed and shows "Override". Product Line:TC300 series Resolution:Override text display would indicate the unit in sleep mode. Sleep mode is enabled by default, available for deluxe models onle. Override is displayed on the unit when the unit is in sleep mode.Sleeping energy-saving mode: Under this mode, the thermostat will set temperature from 12 p.m. with 1 °C up or down every one hour and mode is ended at 3 a.m., with a total change of 3 °C. Under cooling mode, the temperature for sleeping mode will not exceed 26 °C; under the heating mode, no less than 18 °C will be set on. The thermostat will set temperature from 4 a.m.If required, you can disable it by setting parameter 05 Sleeping mode to OFF, as explained in installation sheet. TC300 Series Digital Fan Coil Thermostat Installation Sheet:https://ecobuilding.schneider-electric.com/search?documentUUID=6cb9ce94-b982-4e2f-a851-1d3d625f4d65&title=TC300%20Series%20Digital%20Fan%20Coil%20Thermostat%20Installation%20SheetTC300 Series Modulating Fan Coil Thermostat Installation Instructions:https://ecobuilding.schneider-electric.com/search?documentUUID=2119da26-4bd7-40db-8ae4-6e57f2b52ce4&title=TC300%20Series%20Modulating%20Fan%20Coil%20Thermostat%20Installation%20Instructions

Question 3

What is meant by vector group for transformers and why is it important?

Accepted Answer

What is vector group for transformers?A vector group is the International Electrotechnical Commission (IEC) method of categorizing the high voltage (HV) windings and low voltage (LV) winding configurations of three-phase transformers.The vector group designation indicates the windings configurations and the difference in phase angle between them.Example: a wye HV winding and delta LV winding with a 30-degree lead is denoted as "Yd11".Common vector group presentations are tabulated below. Why is the vector group important to specify? As different combinations of winding connections will result in different phase angles between the voltages on the windings, transformers connected in parallel must have the same vector group because the mismatching of phase angles will result in circulating current and other system disturbances.

Question 4

I have an older SBO/EBO version, can I upgrade to latest EBO version?

Accepted Answer

System upgrades need to be performed in a prescribed sequence to ensure there is no loss of configuration or historical data. It is highly recommended that the Web Help procedures starting with the System Upgrade Workflows topic are followed carefully. See Functionality Upgrade section in WebHelp.WebHelp article can be found here:System upgrade overview * 3.3L is a Limited version intended for specific feature compatibility with some hardware and applications. Full support for thisversion will be shorter than normal and will expire upon the next fully supported release of EBO. Any SmartStruxure solution that is currently at 1.9 or higher can be upgraded directly to EBO V3.2. SBO V1.5, 1.6 and 1.7 can be upgraded firstly to 2.0, then on to 3.2. SBO V1.8 can upgraded firstly to V3.1, then on to V3.2. EcoStruxure Building Operation 3.2 or higher doesn't support the original AS’s often referred to as AS classic, Existing sites will require modernizing classic automation servers (SXWAUTSVR10001) with AS-P (SXWASPXXX10001), AS-P-SMK (SXWASPXXX1S001) or the AS-P-NL (SXWASPXXX10002) to run EcoStruxure Building Operation 3.2 (and later versions).It is important to read the current and ending version release Notes which can be found here: StruxureWare Building Operation v 1.5.0 Release NotesStruxureWare Building Operation v 1.6.0 Release NotesStruxureWare Building Operation v 1.7.0 Release NotesStruxureWare Building Operation v 1.8.0 Release NotesStruxureWare Building Operation v 1.9.1 Release NotesEcoStruxure Building Operation v 2.0.1 Release NotesEcoStruxure Building Operation v 3.0.1 Release NotesEcoStruxure Building Operation v 3.1.1 Release NotesEcoStruxure Building Operation v 3.2.1 Release Notes​​​​​​EcoStruxure Building Operation v 3.3.1L Release Notes​​​​​​EcoStruxure Building Operation v 4.0.1 Release Notes​​​​​​EcoStruxure Building Operation v 5.0.1 Release Notes​​​​​​EcoStruxure Building Operation v 6.0.1 Release Notes EcoStruxure Building Operation v 7.0.1 Release Notes

Question 5

Video: Data Center Expert | Backing up to a Windows Share

Accepted Answer

Issue:Process for creating a Windows share backup within StruxureWare Data Center Expert.Product Line:StruxureWare Data Center Expert (DCE)- Basic Appliance (AP9465)- Standard Appliance (AP9470)- Enterprise Appliance (AP9475)- Virtual Appliance (AP94VMACT)Environment:Data Center Expert (version 6.X to 7.X)Cause:DCE backups should be performed on a regular basis.Resolution:Creating a Windows SharePerforming a Backup within DCETroubleshooting Microsoft released a security update to disable SMBv1 for Windows operating system. Data Center Expert 7.8.1 and below only support Windows shares that utilize SMBv1. You may need to make adjustments to your Windows share system to allow Data Center Expert to backup to it, or use NFS shares as an alternative. Data Center Expert 7.9.0 and above offers a new back end operating system and supports SMBv2 and above.Microsoft Resources on SMB Security: https://docs.microsoft.com/en-US/windows-server/storage/file-server/troubleshoot/detect-enable-and-disable-smbv1-v2-v3 Creating a Windows ShareNOTE: NTLM and SMB versions may prevent a windows share from being mounted. If problems are experienced, please see the troubleshooting section at the bottom.1) Create a folder on the Windows system that you would like to be the backup destination.2) Right-click on the folder and select Properties.3) Select the Sharing tab and then Share. 4) Add the specific user that you would like DCE to use to connect for storing the backup.5) Set the user's permission level to be Read/Write.6) Select Share and then Done.7) Select Advanced Sharing.8) Ensure that the Share this folder checkbox is checked and then select Permissions.9) Add the specific user that you would like DCE to use to connect to this share (same user as step 5).10) Set the user for Full Control. Select Apply and OK.11) Select Apply and OK.NOTE: You will need the share name, IP address of the windows system the share is stored on, and the credentials for the user you granted full control. Performing a Backup within DCE1) Open the DCE client, and go to: System menu > Server Administration Settings > Server Backup/Restore.2) Select Add Backup.3) Select Windows Share and Next.4) Fill in the required share information. - Server Hostname or IP: Enter the IP address of the system that contains the windows share. (Hostname can be used if DNS is configured in System > Server Administration Settings > Network Settings)- Username: User that has read/write permission to the windows share (Steps 3 & 5)- Password/Verify Password: Password of the user defined in the username field.- Domain: If the computer is on a domain, enter the domain name or workgroup name (Control panel > System)- Share: Name of the windows share defined in step 6.- Subdirectory: If a subdirectory was created in the window share (not required)- Security: On Data Center Expert version 7.3.1 and higher, the share security can be defined. Below v7.3.1 only NTMLv1 is allowed.- Backup Type: Full, Synchronized, or Configuration 5) Select Test Mount. If successful, it will inform you that the share was mounted successfully. Select Next.6) If desired, you can enable the backup to be performed at specific times on certain days of the week. Select Finish.7) Select the backup in the list and then select Start Backup. You can continue to use the system during the backup process. When the backup finishes you will see the last backup finish date and last result of the backup. DO NOT CHANGE THE NAME OF THE BACKUP FILE. TroubleshootingNOTE: Please note that backups do not overwrite one another and a share may eventually get too full to accommodate more backups. You can not delete backups that exist on a share through StruxureWare. Please access the shared drive/folder directly to delete old backups or add space to the current allocation should more space be required.NTLM version 2 SupportStruxureWare Data Center Expert versions before 7.3.1 do not support mounting to shares that require NTLMv2 authentication. In some situations, it may allow you to successfully “test mount”, but will not authenticate when attempting a backup or when using this share as a remote repository. It is recommended to use a share that allows for NTLMv1 authentication and to contact technical support to have your software support verified and receive upgrade links.SMB Version 2 and Higher SupportMicrosoft began disabling SMB version 1 in Windows Updates. This can cause Data Center Expert to be unable to back up to existing shares or mount new shares. Information on enabling SMBv1: https://support.microsoft.com/en-us/help/2696547/detect-enable-disable-smbv1-smbv2-smbv3-in-windows-and-windows-server Data Center Expert 7.9.0 and above supports SMB version 2 and higher, and no longer supports SMBv1. Data Center Expert 7.8.1 and below only supports SMB version 1.DCIM support can only verify the protocols work with the software, and are unable to assist with organization configuration strings/settings. It is expected the end user understand the methodologies and nuances of the connection protocol within their network.

Question 6

What is the definition of ANSI 67N/67NC - Directional earth fault?

Accepted Answer

Earth fault protection, with selective tripping according to fault current direction.3 types of operation: type 1: the protection function uses the projection of the I0 vectortype 2: the protection function uses the I0 vector magnitude with half-plane tripping zonetype 3: the protection function uses the I0 vector magnitude with angular sector tripping zone ANSI 67N/67NC type 1 Directional earth fault protection for impedant, isolated or compensated neutral systems, based on the projection of measured residual currentANSI 67N/67NC type 2 Directional overcurrent protection for impedance and solidly earthed systems, based on measured or calculated residual current.It comprises an earth fault function associated with direction detection, and picks up if the earth fault function in the chosen direction (line or busbar) is activated.ANSI 67N/67NC type 3 Directional overcurrent protection for distribution networks in which the neutral earthing system varies according to the operating mode, based on measured residual current.It comprises an earth fault function associated with direction detection (angular sector tripping zone defined by 2 adjustable angles), and picks up if the earth fault function in the chosen direction (line or busbar) is activated.This protection function complies with the CEI 0-16 Italian specification.

Question 7

What is Modbus and How does it work?

Accepted Answer

What is Modbus? Modbus is a serial communication protocol developed by Modicon published by Modicon® in 1979 for use with its programmable logic controllers (PLCs). In simple terms, it is a method used for transmitting information over serial lines between electronic devices. The device requesting the information is called the Modbus Client and the devices supplying information are Modbus Servers. In a standard Modbus network, there is one Client and up to 247 Servers, each with a unique Server Address from 1 to 247. The Client can also write information to the Servers.The official Modbus specification can be found at https://modbus.org/ What is it used for? Modbus is an open protocol, meaning that it's free for manufacturers to build into their equipment without having to pay royalties. It has become a standard communications protocol in industry, and is now the most commonly available means of connecting industrial electronic devices. It is used widely by many manufacturers throughout many industries. Modbus is typically used to transmit signals from instrumentation and control devices back to a main controller or data gathering system, for example a system that measures temperature and humidity and communicates the results to a computer. Modbus is often used to connect a supervisory computer with a remote terminal unit (RTU) in supervisory control and data acquisition (SCADA) systems. Versions of the Modbus protocol exist for serial lines (Modbus RTU and Modbus ASCII) and for Ethernet (Modbus TCP). How does it work? Modbus is transmitted over serial lines between devices. The simplest setup would be a single serial cable connecting the serial ports on two devices, a Client and a Server. The data is sent as series of ones and zeroes called bits. Each bit is sent as a voltage. Zeroes are sent as positive voltages and a ones as negative. The bits are sent very quickly. A typical transmission speed is 9600 baud (bits per second). What is hexadecimal? When troubleshooting problems, it can be helpful to see the actual raw data being transmitted. Long strings of ones and zeroes are difficult to read, so the bits are combined and shown in hexadecimal. Each block of 4 bits is represented by one of the sixteen characters from 0 to F. Each block of 8 bits (called a byte) is represented by one of the 256 character pairs from 00 to FF. How is data stored in Standard Modbus? Information is stored in the Server device in four different tables. Two tables store on/off discrete values (coils) and two store numerical values (registers). The coils and registers each have a read-only table and read-write table. Each table has 9999 values. Each coil or contact is 1 bit and assigned a data address between 0000 and 270E. Each register is 1 word = 16 bits = 2 bytes and also has data address between 0000 and 270E. Coil/Register Numbers can be thought of as location names since they do not appear in the actual messages. The Data Addresses are used in the messages. For example, the first Holding Register, number 40001, has the Data Address 0000. The difference between these two values is the offset. Each table has a different offset. 1, 10001, 30001 and 40001. What is the Server ID? Each server in a network is assigned a unique unit address from 1 to 247. When the client requests data, the first byte it sends is the Server address. This way each server knows after the first byte whether or not to ignore the message. What is a function code? The second byte sent by the Client is the Function code. This number tells the server which table to access and whether to read from or write to the table. What is a CRC? CRC stands for Cyclic Redundancy check. It is two bytes added to the end of every modbus message for error detection. Every byte in the message is used to calculate the CRC. The receiving device also calculates the CRC and compares it to the CRC from the sending device. If even one bit in the message is received incorrectly, the CRCs will be different and an error will result. . What are the formats of Modbus commands and responses? What are data types? The example for FC03 shows that register 40108 contains AE41 which converts to the 16 bits 1010 1110 0100 0001 Great! But what does it mean? Well, it could mean a few things. Register 40108 could be defined as any of these 16-bit data types: A 16-bit unsigned integer (a whole number between 0 and 65535) register 40108 contains AE41 = 44,609 (hex to decimal conversion) A 16-bit signed integer (a whole number between -32768 and 32767) AE41 = -20,927 (hex to decimal conversion that wraps, if its over 32767 then subtract 65536) A two character ASCII string (2 typed letters) AE41 = ® A A discrete on/off value (this works the same as 16-bit integers with a value of 0 or 1. The hex data would be 0000 or 0001) Register 40108 could also be combined with40109 to form any of these 32-bit data types: A 32-bit unsigned integer (a number between 0 and 4,294,967,295) 40108,40109 = AE41 5652 = 2,923,517,522 A 32-bit signed integer (a number between -2,147,483,648 and 2,147,483,647) AE41 5652 = -1,371,449,774 A 32-bit double precision IEEE floating point number. This is a mathematical formula that allows any real number (a number with decimal points) to represented by 32 bits with an accuracy of about seven digits. AE41 5652 = -4.395978 E-11 Here is a spreadsheet IEEE float calculator for inputs of 4 bytes or 2 words. To download a copy, right click and select Save Target As... A four character ASCII string (4 typed letters) AE41 5652 = ® A V R More registers can be combined to form longer ASCII strings. Each register being used to store two ASCII characters (two bytes). What is byte and word ordering? The Modbus specification doesn't define exactly how the data is stored in the registers. Therefore, some manufacturers implemented modbus in their equipment to store and transmit the higher byte first followed by the lower byte. (AE before 41). Alternatively, others store and transmit the lower byte first (41 before AE). Similarly, when registers are combined to represent 32-bit data types, Some devices store the higher 16 bits (high word) in the first register and the remaining low word in the second (AE41 before 5652) while others do the opposite (5652 before AE41) It doesn't matter which order the bytes or words are sent in, as long as the receiving device knows which way to expect it. For example, if the number 29,235,175,522 was to be sent as a 32 bit unsigned integer, it could be arranged any of these four ways. AE41 5652 high byte first high word first 5652 AE41 high byte first low word first 41AE 5256 low byte first high word first 5256 41AE low byte first low word first What is a Modbus Map? A modbus map is simply a list for an individual server device that defines - what the data is (eg. pressure or temperature readings) - where the data is stored (which tables and data addresses) - how the data is stored (data types, byte and word ordering) Some devices are built with a fixed map that is defined by the manufacturer. While other devices allow the operator to configure or program a custom map to fit their needs. What is the difference between Modbus ASCII and Modbus RTU? Modbus RTU and Modbus ASCII talk the same protocol. The only difference is that the bytes being transmitted over the wire are presented as binary with RTU and as readable ASCII with Modbus RTU. important to note about RTU is that the RTU message does not have a Start_of_text indication. The receiving party in the communications uses a "silent" time in order to determine the start of a new message. ASCII does have a start-of-text token. Binary messages are shorter than ASCII and therefore theoretically faster to transmit/receive. You may be happy to see update rates of about 100 ms in your HMI/SCADA and could choose either communication.Summary:- use RTU is possible- use ASCII in case RTU is giving timeout problems on WinNT or when using slow communications media like 300 bps or dialup modems Most OPC Servers for Modbus support ASCII as well as RTU communications.. What are extended register addresses? Since the range of the analog output holding registers is 40001 to 49999, it implies that there cannot be more than 9999 registers. Although this is usually enough for most applications, there are cases where more registers would be beneficial. Registers 40001 to 49999 correspond to data addresses 0000 to 270E. If we utilize the remaining data addresses 270F to FFFF, over six times as many registers can be available, 65536 in total. This would correspond to register numbers from 40001 to 105536. Many modbus software drivers (for Client PCs) were written with the 40001 to 49999 limits and cannot access extended registers in server devices. And many server devices do not support maps using the extended registers. But on the other hand, some server devices do support these registers and some Client software can access it, especially if custom software is written. How does 2-byte server addressing work? Since a single byte is normally used to define the server address and each server on a network requires a unique address, the number of server on a network is limited to 256. The limit defined in the modbus specification is even lower at 247. To get beyond this limit, a modification can be made to the protocol to use two bytes for the address. The client and the servers would all be required to support this modification. Two byte addressing extends the limit on the number of servers in a network to 65535. By default, the Simply Modbus software uses 1 byte addressing. When an address greater than 255 is entered, the software automatically switches to 2 byte addressing and stays in this mode for all addresses until the 2 byte addressing is manually turned off. How can you send events and historical data? Enron Modbus includes commands for moving events and historical data.. What is Enron Modbus? Enron Modbus is a modification to the standard Modicon modbus communication protocol developed by Enron Corporation. See Enron Modbus for details.

Question 8

How do I upgrade the firmware on an APC Network Management Card (NMC) or NMC embedded device?

Accepted Answer

Issue You wish to upgrade your Network Management Card's (NMC) firmware or have been instructed to.You have a device such as a Smart-UPS, Smart-UPS Ultra, Easy UPS On-Line, Easy UPS 3-Phase, Rack PDU, AV unit, or environmental monitoring unit with an embedded NMC that you wish to upgrade.You had a problem with a previous upgrade attempt and need the instructions in order to correct it.Your device came pre-loaded with the wrong application and you need to load the correct application. Product Line Network Management Card 2 - AP9630, AP9631, AP9635Network Management Card 3 - AP9640, AP9641, AP9643Network Management Card 3 for Easy UPS – AP9544, AP9547Network Management Card 4 – AP9644 Environment All serial numbersAll firmware versions (unless otherwise noted) CauseUsers may wish to upgrade their firmware to take advantage of enhancements, bug fixes, or new features. Also, sometimes a firmware upgrade can be interrupted or unsuccessful and these instructions can be followed to remedy the problem.Typically, these upgrades do not require the device the Network Management Card is installed in to be powered down or cause unnecessary downtime.Lastly, downgrades are not typically recommended but the manual methods can also be used to do those in certain circumstances.NOTE: To upgrade to firmware version 3.0 and higher for NMC3 for Smart-UPS, Easy UPS On-Line, and rPDU, the only supported method is the Secure NMC System (SNS) Tool, which requires a subscription to access the firmware. For more information, see www.se.com/secure-nmcResolutionFind Correct FirmwareWhen upgrading the firmware on your Network Management Card (NMC), you will need to determine which files pertain to your application. Begin by determining what model of NMC you have. AP9630, AP9631, AP9635 - Network Management Card 2AP9641, AP9641, AP9643 - Network Management Card 3AP9544, AP9547 - Network Management Card 3 for Easy UPS The application firmware required depends on what product your NMC is installed in. Some examples include: For NMC2 devices: SUMX for Smart-UPS 1-PhaseSY for Symmetra 1-Phase UPSSY3P for Symmetra 3-Phase UPS For NMC3 devices: SU for Smart-UPS 1-PhaseSY for Symmetra 1-Phase UPSSUCAN for Smart-UPS UltraRPDU2G for rPDU (Rack Power Distribution Unit)SY3P for Symmetra 3-Phase UPS For Easy UPS NMC devices: EU1P for Easy UPS 1-PhaseEU3P for Easy UPS 3-Phase NOTE: These instructions can also be used in devices that have embedded (mini) versions of the above Network Management Cards.NOTE: If you are interested in upgrading multiple devices at a time, refer to knowledge base FA156117 NOTE: If you have an AP9635 installed in a Symmetra PX 250/500, you have a Network Management Card 2 but MUST contact APC Technical Support in order to obtain the correct firmware and special instructions.Download Firmware Navigate to www.apc.com/secure-nmc and click the Software and Firmware tab.Find and download the latest firmware file for your NMC. NOTE: To upgrade to firmware version 3.0.0 and higher for NMC3 for Smart-UPS, Easy UPS On-Line, and rPDU, the only supported method is the Secure NMC System (SNS) Tool, which requires a subscription to access the firmware.Alternatively, visit https://www.apc.com/us/en/download/software-firmware/ and enter your NMC part number (e.g. AP9641), click the Firmware category, and download the latest firmware file. NOTE: Firmware updates of NMC3 or NMC4 for 3-Phase UPS and PDU can only be done by Schneider Electric qualified services representatives. Please contact your local Schneider Electric Service Representative or Schneider Electric Certified Service Partner for details. Update FirmwareThere are different ways that you can upload the firmware for each device. Please choose a method that works best for you. NOTE: For users upgrading (or downgrading) their Network Management Card 2 device from v5.X.X to v6.X.X, please review Knowledge Base article FA167693 to understand several important considerations prior to beginning any of these steps. Secure NMC System (SNS) Tool - Network Management Card 3 (for firmware versions 3.0 and higher)Universal Serial Bus (USB) 1.1 - Network Management Card 2 and 3 devices with a USB port (AP9631, AP9635, AP9641, AP9643 and RPDU devices (RPDU2G) and Smart-UPS Ultra devices with embedded NMC3 – for firmware versions 2.5 and lower)Firmware Upgrade/Update Utility - Network Management Card 2 and 3 (for NMC3 firmware versions 2.5 and lower)XMODEM - Network Management Card 2 and 3 (for NMC3 firmware versions 2.5 and lower)Manual (FTP prompt) - Network Management Card 2 and 3 (for NMC3 firmware versions 2.5 and lower)Manual - Secure CoPy (SCP) - Network Management Card 2 and 3 (for NMC3 firmware versions 2.5 and lower) Secure NMC System (SNS) Tool - Network Management Card 3 (firmware versions 3.0 and higher) Download the Secure NMC System (SNS) Tool from the APC/Schneider Electric website. As of SNS Tool v4.0, all units can be upgraded using the same program, excluding PDU's in an NPS setup. Part # (SKU) Secure NMC System (SNS) Tool SFNMC3FMTSU Secure NMC System Tool for Smart-UPS SFNMC3SUCAN Secure NMC System Tool for Smart-UPS Ultra SFNMC3RPDU Secure NMC System Tool for PDU SFNMC3FMTEU1PSecure NMC System Tool for Easy UPS On-Line NOTE: There are different versions of the SNS Tool depending on the application you are running on your NMC3. To access the firmware in the SNS Tool, you need a valid Secure NMC subscription. See www.apc.com/secure-nmc for more information. Double-click the self-extracting ZIP file. Add devices to the SNS Tool: To add one at a time: Click Add Devices and enter: the NMC’s IP address/FQDN/hostname the protocol and port to transfer the firmware file. SCP is recommended as it’s more secure than FTP. Note: The selected protocol must also be enabled on the NMC3. the user name and password To add more than one at a time: Open the devices.csv file in the downloaded SNS Tool directory and add the device details. Note: Lines that start with a semi-colon ; will not be processed. Save and close the devices.csv file. In the SNS Tool, click Add Devices. Click Import Device File – this button only appears if data is detected in the devices.csv file. Click Query Devices. Click Query Devices. Click Add Devices. Activate licenses for selected NMCs: Click on NMCs in the Device List and click License Devices. If you have more than 1 NMC in the Device List, use Ctrl+click to multi-select. Enter the Activation ID from the purchased Secure NMC System subscription and click Confirm & Activate. (If you have the SNS Tool installed on another PC and want to check if any of the NMCs are already licensed, you can click Sync License(s) to do so). Update firmware for selected NMCs: Click on NMCs in the Device List and click Update Firmware. If you click Update Firmware without selecting any NMCs from the Device List, the Firmware Management Tool will automatically select all of the NMCs that are eligible to update (Device Status = Ready for update). Universal Serial Bus (USB) 1.1 – Network Management Card 2* devices with USBNOTE: *If you have an AP9635 installed in a Symmetra PX 250/500, you have a Network Management Card 2 but MUST contact APC Technical Support in order to obtain the correct firmware and special instructions, PRIOR to following the steps below. Failure to do so may result in unexpected operation of your AP9635 Network Management Card 2. NOTE: Some USB flash drives are not compatible with the NMC2 devices. Secondly, the flash drive’s file system must be FAT, FAT16, or FAT32. (NTFS will not work).1. Obtain the latest firmware files from apc.com and extract them to a folder. Please note, USB may not allow for a firmware downgrade. You must use a manual method to accomplish a downgrade.2. Create a folder on your USB flash drive called apcfirm .3. From the latest firmware files that you downloaded, add to the apcfirm folder the binary files for the firmware modules that you would like to upgrade. Some examples of the binary files for the three firmware modules follow: Firmware ModuleBinary File APC Boot Monitor apc_hw05_bootmon_109.bin APC Operating System (AOS) apc_hw05_aos_712.bin Application Module apc_hw05_sumx_712.bin Language Pack* sumx_712_frFrdeDeruRuitItesEs.lpk *Optional language pack upgrades/changes are supported via USB if the device you’re upgrading already has BootMonitor v1.0.8 or higher (BootMonitor performs the upgrading function). NOTE: Not all NMC2 applications support language packs. 4. Use a text editor such as Microsoft Notepad to create a file called upload.rcf. NOTE: (Ensure that file extensions are visible so that your file does not get named upload.rcf.txt. In Windows, this option can be edited in Folder Options->View->Hide extensions for known file types within Control Panel. Make sure that option is unselected.) Add to the file a line for each firmware module that you want to upgrade as shown below (replace “xx” with the version of firmware you will be upgrading to): BM=apc_hw05_bootmon_xx.binAOS=apc_hw05_aos_xx.binAPP=apc_hw05_sumx_xx.binLANG=sumx_xx_frFrdeDeruRuitItesEs.lpk 5. Add the upload.rcf file to the apcfirm folder on the flash drive.6. Insert the flash drive into the USB port on the NMC2.7. Press and release the pinhole Reset button on the NMC2 for the USB upgrade process to begin. (This will only reboot the management interface of the NMC2 and not reboot your device/load.) The NMC2 status LED, located on the RJ-45 Ethernet jack, will begin to blink amber during this procedure and rotate through a few color flashing patterns while transferring the different files. NOTE: If you have an AP9631 or AP9635 removable NMC2 UPS SmartSlot card, you can also remove and re-insert the card into the UPS SmartSlot, effectively rebooting the NMC2 and beginning the USB upgrade process this way.8. Wait for 2-5 minutes for the upgrade to complete. Remove the flash drive from the USB port and check your firmware version. On a Rack PDU specifically, the LCD display will show the firmware version for three seconds and then will resume normal operation, at which time you can also remove the flash drive.Universal Serial Bus (USB) 1.1 – Network Management Card 3 devices with USB (firmware versions 2.5.0 and lower)This feature is available in bootloader version v1.3.3.1 and higher. Before starting the transfer, make sure the USB drive is formatted in FAT, FAT16 or FAT32. Download the firmware upgrade file.Create a folder named apcfirm on the USB flash drive.Place the .nmc3 file in the apcfirm directory.Use a text editor to create a file named nmc3.rcf. (The file extension must be .rcf, not .txt for example.)In nmc3.rcf, add a line for the firmware package to be upgraded. For example, to upgrade Smart-UPS application version v1.5.0.6, type: NMC3=apc_hw21_su_2-5-0-6.nmc3Place nmc3.rcf in the apcfirm folder on the flash drive.Insert the flash drive into a USB port on your NMCReboot the NMC and wait for the card to reboot fully. Firmware Upgrade/Update Utility – Network Management Card 2 and 3* (NMC3 firmware versions 2.5.0 and lower)If you have a Windows computer, you can use the Firmware Upgrade Utility (NMC2)/Firmware Update Utility (NMC3) to upgrade the firmware.If you have any other type of computer, then you will need to manually upload each firmware file to the Network Management Card. Go to the XMODEM or Manual sections below for additional instructions.NOTE: For any firmware downgrades, which are not typically recommended, you will need to choose a new method. The Wizard will block any downgrades. Unfortunately, loading applications for different devices may also have encounter this block if AOS versions are not the same.NOTE: *If you have an AP9635 installed in a Symmetra PX 250/500, you have a Network Management Card 2 but MUST contact APC Technical Support in order to obtain the correct firmware and special instructions, PRIOR to following the steps below. Failure to do so may result in unexpected operation of your AP9635 Network Management Card 2. Click on the firmware executable once the download is complete. The executable will proceed to unzip firmware files and extract them. You can specify the location where you want the firmware to download to.Once the firmware has been saved, the executable will prompt you for the IP address of the Network Management Card that you want to upgrade.Once you enter the IP address, click enter.You will be prompted for a username and password. This must be the Super User Account or an Administrator account. By default, the Super User username and password is apc. Press enter.If using the NMC2 Firmware Upgrade Utility, seen below, you will be prompted to enter the IP address and username and password. You can enter those and press Upgrade Now. If using the NMC3 Firmware Update Utility, seen below, you will be prompted to enter the IP address and username and password. You can enter those and press Start Update. The firmware executable will then begin the upgrade process. This process may take as long as 5-7 minutes to finish. Once finished, close the executable.Verify that the firmware upgrade was successful. Log into the Web UI and navigate to About -> Network. The updated firmware should be listed on this page. Alternatively, verify via Telnet, SSH, or local console connection on the main page after log in. XMODEM – Network Management Card 2 and 3 (for NMC3 firmware versions 2.5 or lower) Network Management Card 2 (AP9630, AP9631, AP9635)*NOTE: If you have an AP9635 installed in a Symmetra PX 250/500, you have a Network Management Card 2 but MUST contact APC Technical Support in order to obtain the correct firmware and special instructions, PRIOR to following the steps below. Failure to do so may result in unexpected operation of your AP9635 Network Management Card 2.NOTE: If you wish to downgrade from v6.X.X to v5.1.X firmware on NMC2, please make sure you review Knowledge Base Article FA167693 prior.1. Select a serial port at the local computer and disable any service that uses the port.2. Connect the provided serial configuration cable (APC part number 940-0299) to the selected 2.5mm Tip-Ring-Sleeve Console port on the Management Card itself. 3. Run a terminal program such as HyperTerminal, and configure the selected port for 57600 bps, 8 data bits, no parity, 1 stop bit, and no flow control. NOTE: certain terminal emulation programs, such as PuTTy, do not support the XMODEM protocol.4. Press the Reset button on the Management Card or reseat the Network Management Card in the SmartSlot, then immediately start pressing the key repeatedly until the Boot Monitor prompt displays: BM> . Also, once you have entered Boot Monitor mode correctly, the Network Management Card's status LED will flicker amber in color. (BootMonitor mode is required on NMC2 for an XMODEM upgrade in any situation.)5. Type XMODEM, then press ENTER. You will begin to see CCCCC scroll across the screen to indicate the Network Management Card is ready to receive a file.6. From the terminal program’s menu, select XMODEM, then select the binary bootmonitor firmware file to transfer using XMODEM. After the XMODEM transfer is complete, the Boot Monitor prompt returns.NOTE: If the boot monitor module must be updated, a boot monitor module is included in the firmware release. Otherwise, the boot monitor module that is installed on the card is compatible with the firmware update. If there is no included bootmonitor file, upgrade the AOS binary first.7. To install the application module, repeat step 5 and step 6. In step 6, use the application module file name.8. Type reset or press the Reset button to restart the Management Card.If the Management Card is installed in an Expansion Chassis or Triple Expansion Chassis, connect the provided configuration cable (APC part number 940-0299) to the serial port at the Management Card, or connect an RS-232 configuration cable (APC part number 940-0024) to the DB-9 serial port at the expansion chassis.If you connect an RS-232 configuration cable (APC part number 940-0024) to the DB-9 serial port of the expansion chassis, select 115200 bps.Network Management Card 3 (AP9640, AP9641, AP9643)1. Select a serial port at the local computer and disable any service that uses the port.2. To connect to a NMC3, use the provided micro-USB cable (APC part number 960-0603).3. Run a terminal program such as HyperTerminal, and configure the selected port for 57600 bps, 8 data bits, no parity, 1 stop bit, and no flow control. NOTE: Certain terminal emulation programs, such as PuTTy, do not support the XMODEM protocol.4. Press the Reset button on the Management Card or reseat the Network Management Card in the SmartSlot, then immediately start pressing the key repeatedly until the Boot Monitor prompt displays: BM>. Once you have entered Boot Monitor mode correctly, the Network Management Card 3's status LED will be solid orange in color. (Boot Monitor mode is required on NMC3 for an XMODEM upgrade in any situation.)5. Type XMODEM, then press ENTER. You will begin to see CCCCC scroll across the screen to indicate the Network Management Card is ready to receive a file.6. From the terminal program’s menu, select XMODEM and select the .nmc3 file to transfer. After the XMODEM transfer is complete, the Boot Monitor prompt returns.7. Type reset or press the Reset button to restart the Management Card.If the Management Card is installed in an Expansion Chassis or Triple Expansion Chassis, connect the provided configuration cable (APC part number 940-0299) to the serial port at the Management Card, or connect an RS-232 configuration cable (APC part number 940-0024) to the DB-9 serial port at the expansion chassis. If you connect an RS-232 configuration cable (APC part number 940-0024) to the DB-9 serial port of the expansion chassis, select 115200 bps. Manual (via FTP) - Network Management Card 2 and 3* (NMC3 firmware versions 2.5.0 and lower)Network Management Card 2NOTE: If you have an AP9635 installed in a Symmetra PX 250/500, you have a Network Management Card 2 but MUST contact APC Technical Support in order to obtain the correct firmware and special instructions, PRIOR to following the steps below. Failure to do so may result in unexpected operation of your AP9635 Network Management Card 2.1. To perform a firmware flash with this method the Management Card must have been previously configured with a System IP, Subnet Mask, and Default Gateway and attached to the network. In addition, FTP Server must be enabled.2. Open an MS-DOS command prompt window on a PC which is connected to the network. Change to the directory which contains the firmware upgrade files. Some example commands which need to be entered are shown in bold in order to change directories. Please note, this is just an example. You may need to enter a full path to a directory which requires different syntax.C:\> cd apcC:\apc> 3. Open an FTP client session.C:\apc> ftp 192.168.1.100 (192.168.1.100 being the IP address of the web card) 4. Log in. This must be the Super User Account or an Administrator account. By default, the Super User username and password is apc. Press enter.Typically, the password will appear on the screen as *** or not at all as you type. Connected to 192.168.1.100220- APC FTP server ready.User (192.168.1.100 :(none)): apc331 User name okay, need password.Password: apc230 User logged in, proceed.ftp> 5. Upgrade the bootmonitor file first. If the boot monitor module must be updated, a boot monitor module is included in the firmware release. Otherwise, the bootmonitor module that is installed on the card is compatible with the firmware update and can be skipped. If there is no included bootmonitor file, or you are using NMC1, upgrade the AOS first. The AOS module is the file with the AOS prefix. ftp> bin (specifies binary transfer mode which is required)200 Command okay.ftp> hash (optional - enables hash mark printing as a way of monitoring file transfer progress)ftp> put aosxx.bin (xx being the version number downloaded) Tip: With Windows Command Prompt in most OS versions, besides Vista, command prompt, you can drag and drop the file onto the command prompt window which will paste the full file path automatically here for you.200 Command okay.150 Opening data connection for aos301.bin###############################################################250 Requested file action okay, completed. Management Card Rebooting....327680 bytes sent in 5.99 seconds (54.70 Kbytes/sec)ftp> 6. Close the FTP client session to allow the card to continue rebooting as your FTP session will be disconnected and need to be re-opened for any further transfers. ftp>byeC:\apc> 7. Wait about 20 - 30 seconds.8. Repeat Steps 3 - 8 again for the application module (sumx for Smart UPS/Matrix, sy for Symmetra, etc). In Step 6, substitute the sumx module file name, in place of the AOS module file name. Or the sy prefix for the Symmetra. NOTE: To upgrade multiple Management Cards using an FTP client or using SCP, write a script which automatically performs the procedure.NOTE: If using MacOSX, the full filepath of the destination folder will need to be included in the "put" command. An example command would read:ftp> put /Users/Admin/Downloads/aosxx.bin /aosxx.binNetwork Management Card 31. To perform a firmware flash with this method the Management Card must have been previously configured with a System IP, Subnet Mask, and Default Gateway and attached to the network. In addition, FTP Server must be enabled.2. Open an MS-DOS command prompt window on a PC which is connected to the network. Change to the directory which contains the firmware upgrade files. Some example commands which need to be entered are shown in bold in order to change directories. Please note, this is just an example. You may need to enter a full path to a directory which requires different syntax.C:\> cd apcC:\apc>3. Open an FTP client session.C:\apc> ftp 192.168.1.100 (192.168.1.100 being the IP address of the web card) 4. Log in as Administrator (apc is the default user name and password). 5. Upgrade the firmware:ftp> bin (specifies binary transfer mode which is required)ftp> hash (optional - enables hash mark printing as a way of monitoring file transfer progress)ftp> put apc_hw21_SU_xx.nmc3 (xx being the version number downloaded)6. When FTP confirms the transfer, type quit to close the session. 7. Wait about 20 - 30 seconds. NOTE: To upgrade multiple Management Cards using an FTP client or using SCP, write a script which automatically performs the procedure.Manual (via Secure CoPy) - Network Management Card 2 and 3* (NMC3 firmware versions 2.5.0 and lower)Network Management Card 2NOTE: If you have an AP9635 installed in a Symmetra PX 250/500, you have a Network Management Card 2 but MUST contact APC Technical Support in order to obtain the correct firmware and special instructions, PRIOR to following the steps below. Failure to do so may result in unexpected operation of your AP9635 Network Management Card 2.NOTE: If you wish to downgrade from v6.X.X to v5.1.X firmware on NMC2, please make sure you review Knowledge Base Article FA167693 prior.1. Identify and locate the firmware modules described in the preceding instructions for FTP.2. Use an SCP command line to transfer the AOS firmware module to the Management Card. The following example uses xx to represent the version number of the AOS module: scp apc_hw05_aos_xx.bin apc@158.205.6.185:apc_hw05_aos_xx.bin 3. Use a similar SCP command line, with the name of the application module, to transfer the application firmware module to the Management Card. NOTE: To upgrade multiple Management Cards using an FTP client or using SCP, write a script which automatically performs the procedure. Alternatively, you can use APC's INI utility which is downloadable and explained in Knowledge Base Article FA156117.NOTE: Never remove a Management Card before it completes the reboot cycle. Doing so will damage the Management Card. The reboot cycle is complete when the status LED turns off and after 20 seconds turns solid green or slowly flashing Network Management Card 3Use an SCP command line to transfer the .nmc3 file to the Management Card. The following example uses xx to represent the version number of the application module: scp apc_hw21_SU_xx.nmc3 apc@158.205.6.185:apc_hw21_SU_xx.nmc3 NOTE: To upgrade multiple Management Cards using an FTP client or using SCP, write a script which automatically performs the procedure. Alternatively, you can use APC's INI utility which is downloadable and explained in Knowledge Base article FA156117.NOTE: Never remove a Management Card before it completes the reboot cycle. Doing so will damage the Management Card. The reboot cycle is complete when the status LED turns off and after 20 seconds turns solid green or slowly flashing amber.

Question 9

What is meant by Symmetrical and Asymmetrical breaking currents?

Accepted Answer

issue:Customer wants to know the value of the symmetrical and asymmetrical breaking current of the circuit breaker and what do they mean.Environment:Circuit Breaker Resolution:- Symmetrical breaking current is the RMS value of AC component of short circuit current at the instant of separation of the contacts. It does not take into account the DC offset.- Asymmetrical breaking current is is the RMS value of the combined sum of the DC and AC components of the short circuit current at the instant of separation of the breaker contacts. This DC offset is of decaying nature which is dictated by the time constant of the system. As shown in the above picture the DC offset decays in a few cycles and is left only with the symmetrical component. Hence if a breaker has to close before the DC component decays, then the breaker’s breaking capacity is to be calculated for the asymmetrical current at the time of breaking.

Question 10

What is the selection criterion of Circuit Breakers for the Capacitor bank application.

Accepted Answer

The selection should be done after derating the Circuit Breaker taking into consideration voltage variation and capacitors tolerances that could increase nominal current up to 1.5In. The Derating factor of 1.5In Where In = Q/ ( Square root of 3 ) Un Q = Capacitor Power Un = Nominal Voltage Choose the Micrologic with delay time selection, so that the Circuit Breaker does not trip due to initial high inrush current. Also to be taken into account are the parameters like supply frequency, operating voltage & harmonics level of the power system for such application. Refer the attached sheet for further details for selection of Circuit Breaker for Capacitor duty application. Note: Use the phase barrier between the phases in Circuit Breaker to prevent flashover due to heavy inrush current.

Question 11

In a 3 phase system, why does the meter still show voltage reading on one of the phases even after breaking the phase circuit?

Accepted Answer

Issue:Testing phase loss on a meter doesn't result in a null voltage reading.Environmnet:EasyLogic Series Power MetersPowerLogic Series Power MetersResolution:The voltage seen is what we call "phantom voltage", its a known phenomenon with all high impedance power meters. These phantom voltages are normal artifacts of the design and should not pose any safety concerns to the end user.In some cases it'll probably disappear by power cycling the meter. Most power meters are not designed to monitor phase loss, as it'll always assume the presence of the 3 phases and the neutral, depending on your parameters setup. External devices are used to detect such occurrences, like phase control relays.

Question 12

Why is Neutral and Earth (Ground) Connection forbidden Downstream from Main Panel?

Accepted Answer

The question is often asked what is the maximum voltage permitted between the Neutral and Earth (Ground) conductor and if the Neutral and Earth can be bridged to achieve a zero value.This can be a difficult topic, in fact in many cases it can be dangerous. As you will see from the attached document, there are many reasons why it is not allowed.

Question 13

Which RL(lead resistance from CT to relay) is to be used in Knee Voltage calculation if Current Transformers (CTs) used in High Impedance Restricted Earth Fault are at different distances from relay?

Accepted Answer

Issue:Having two different values for RL ( Lead resistance from the CT to the relay); RL from the phase CT to the relay and RL from the neutral point CT to the relayEnvironment:Protection Function ANSI 64refHigh impedance differentialSepam 80 Current Transformer requirementResolution:In any application where the high impedance differential is used, all the CTs must have the following:- the same ratio,- the same magnetizing curve (same minimum Vk),- the same maximum Rct (current Transformer secondary winding resistance),- if the relevant CTs are not at the same distance from the relay, take the maximum RL.Attached Cahier Technique no.194 for more information about high impedance calculation

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