Question 1

Wiser IP Camera Troubleshooting

Accepted Answer

If the camera is not pairing, first check if the IP camera in proximity to the Modem/Router and therefore has WiFi signal. Then ensure the IP camera is being connected to 2.4GHz on the Wi-Fi router, noting the Camera operates on 2.4GHz only. If unsure, check the WiFi router settings to see whether ‘Band Steering’ is enabled or not. This should be disabled as it may attempt to force a 5.0GHz WiFi network to the camera rather than the 2.4Ghz.”Make sure WiFi has access to the internet, this can be done by disabling mobile data and testing a video or web page.If EZ Mode pairing is not working, try using QR mode to pair the camera. Tap “EZ Mode” in the top right corner of the screen to change pairing mode.

Question 2

How to Calculate the Required Capacity kVA Rating or Amperage Capacity for Single and Three Phase Transformers

Accepted Answer

Issue:Calculation of kVA capacity for a Single or Three Phase Transformer, based on Winding Voltage and Amperage information. Product Line:Low Voltage (LV) TransformersLearn more about DOE 2016 Energy Efficient Transformers by Schneider Electric Environment:Applies to all Single and Three Phase Transformers. Cause:kVA sizing must often be calculated from Primary or Secondary Winding Voltage and Amperage information. Resolution:This Frequently Asked Question offers three different methods for finding the needed information:1. This link on the Schneider Electric Website is a Transformer Data Calculator:https://tools.se.app/transformerdata/index.html?language=en&country=usa#/transformer-dataThere are also the following methods for calculating or finding the Required Capacity kVA Rating or Amperage Capacity for Single and Three Phase Transformers:2. To determine kVA you must have at least two pieces of information: the load line-to-line voltage (V)the maximum load phase current (I) Single Phase Transformers: kVA = (V * I) /1000Three Phase Transformers: kVA = (V * I * 1.732) / 1000where 1.732 is the simple numerical value for the square root of 3 (1.7320508...)Then round up to the next standard 3ph kVA rating as found in Section 14 of SquareD/Schneider Electric Catalog, Digest 178 .Single Phase Transformer Example: V = 240, I = 175; Therefore: kVA = (240 x 175) / 1000 = 42 kVAThis calculates to 42 kVA, thus we round up to a standard Single Phase size 50kVA. From the Digest, an EE50S3H will satisfactorily serve this load.Three Phase Transformer Example: V = 208, I = 175; Therefore: kVA = (208 x 175 x 1.732) / 1000 = 63.05kVAThis calculates to 63+ kVA, thus we round up to a standard Three Phase size 75kVA. From the Digest, an EXN75T3H will satisfactorily serve this load.Note: This is a sample kVA calculation and does not take into account possible special load requirements, such as found with motors or some medical equipment, or other specialty applications.Amperage provided for a given KVA can be determined by similar techniques:Single Phase Example: Using a 50 KVA Single Phase Transformer as a starting point. 50KVA is equal to 50,000 VA. (K= 1,000) The full value in VA, 50,000 is then divided by the Voltage 240V = 208 Amperes. This is a "Two Step Division", technique: VA / Voltage = Amperage. Three Phase Example: Using a 75 KVA Three Phase Transformer as a starting point. 75 KVA is equal to 75,000 VA. (K= 1,000) The full value in VA, 75,000 divided by 1.732 = 43,302, which is then divided by the Voltage 208V = 208.2 Amperes. This is a "Three Step Division", technique: VA / 1.732 / Voltage = Amperage. 3. As an alternative to these calculations, you may prefer to use the charts below. Standard KVA sizes are shown on the left margin, Standard Line-to-Line Voltages are shown along the top margin. Chart Example: Using the numbers from the earlier Three Phase Transformer Example V=208, I=175. Use the chart titled "Three Phase Low Voltage Dry Type Transformers". Following the 208V top margin entry, and reading down vertically, it is seen that the first entry in that 208V vertical column that will cover 175A, and then some, is 208A, which indicates a 75 KVA Transformer, shown in the next over vertical column to the left.See pages 3 & 4 of document 7400HO9501 "Looking for Low Voltage Transformer Solutions" for more information and conversion tables.

Question 3

What is the complete RJ45 connector pinout for ATV320?

Accepted Answer

The complete pinout, Pin 1 = CAN_HPin 2 = CAN_LPin 3 = CAN_GNDPin 4 = DI Modbus Signal Pin 5 = DO Modbus SignalPin 6 - Not connectedPin 7 = VP, 10VdcPin 8 = Common The CANopen signals on the front port are deactivated if an option card is plugged in the drive (any option card connected).

Question 4

What does the 's' on the Power Meter Accuracy class 0.2s & 0.5s mean?

Accepted Answer

It refers to the accuracy of the meter. A 0.2s meter has a much higher accuracy as below.Since Accuracy depends on the load of the system, IEC/AS have developed different standards to define accuracy under different load conditions, known as “Accuracy Class”IEC/AS Standard 62053-11 covers Accuracy Class 0.5, 1.0 & 2 for electromechanical meters for active energy (watt-hours) which means the accuracy as a percentage from reading based on full load conditions and unity power factor. However the accuracy deteriorates under lower load conditions, power factor less than unity along with the presence of harmonics.IEC/AS Standard 62053-21 covers Accuracy Class 1.0 & 2 for static/electronic meters for active energy (watt-hours) which means the accuracy as a percentage from reading based on full load conditions and unity power factor. However the accuracy deteriorates under lower load conditions, power factor less than unity along with the presence of harmonics.IEC/AS Standard 62053-22 covers a higher Accuracy Standard of 0.2S and 0.5S for static/electronic for active energy (watt-hours) providing a higher “Accuracy Standard” under full load conditions and unity power factor in addition to better accuracy readings at much lower load currents, power factor conditions less than unity along with the presence of harmonics.

Question 5

Error: Link not valid due to Project/Libset inconsistency. Please update the Project with Library

Accepted Answer

Issue When updating a project, particularly from Unity Pro to Control Expert, you may encounter the following error, "Not valid due to Project/Libset inconsistency. Please update the Project with Library". Affect Products EcoStruxure Control Expert Answer We are able to use the "Update All" tool within the "Types Library Manager" to resolve this issue. Prerequisites You will need an archive copy of your project (that is a file extension of .sta). You can find more information on archive files here. Procedure 1) To begin, from the top toolbar, Select "File > Open...". Notice I have left the "Libset Version" to "Keep project version...". Click "Open". You may receive numerous warnings, click "OK" on these. 2) From the top toolbar, Select "Tools > Types Library Manager..." 3) Right click on "<Application>" and then Select "Compare Project with Library..." 4) The error occurs because the two columns, "V. Library" and "V. Project", do not match. To repair click on "Update All". You may receive numerous warnings, click "OK". 5) The "Update All" process can sometimes take numerous attempts before all libsets have been updated. Please right click, compare and update your project again (repeat steps 3 and 4) until Control Expert can no longer detect any differences. 6) You will know you are done when you receive an information window saying "No difference has been found between the types in the project and those in the library." Click "OK" and then "Close". 7) Now perform a full rebuild of the project. From the top toolbar, "Build > Rebuild All Project". Click "Yes" to confirm rebuild. Your project and libset version should now be matching and updated to the latest version.

Question 6

How do I test PLC client and PLC server communication with explicit messaging using Control Expert’s simulator instead of actual hardware?

Accepted Answer

The solution is to use the steps below which show the setup of Control Expert V15.0 and above’s IP address port simulator.Step 1: Create an XML file with the format below. Any IP address can be used and assigned to a port.eg). Step2: Open Control Expert and create a new M580 project. Create a program with the Read_Var block and assign an IP address that corresponds to one of the ports (created in the XML). Eg)Build and connect to the simulator using the port number not assigned to the IP address used in the ADDM block. Transfer the program and run. Eg)Step 3: Open another instance of Control Expert and create another blank M580 project. Connect to the simulator as below. The IP address must be 127.0.0.1 but the port number must be the one assigned to the IP address used in the ADDM block previously. Step 4: From the task bar, select Options from the Simulator menuStep 5: Enter the location of the .xml fileIt will now be possible to monitor the memory read in by the Read_Var block.

Question 7

How to Perform factory reset on Panel server?

Accepted Answer

Product Line:Panel ServerResolution:To reset the Panel server to factory setting. Please follow below as mentioned in Panel Server User guideRestart Button is highlighted in yellow as below:

Question 8

How are the long time, short time, instantaneous, and ground fault pickup levels determined on a Micrologic trip unit?

Accepted Answer

Issue:How to set dials on trip unit? What do the dials mean?Product Line:Circuit BreakersResolution:The settings are determined by a coordination study.Description of what the dial settings mean:The long time (current rating) (Ir) is the long time pickup setting multiplied by the sensor plug amperage (In).The short time current (Isd) equals the short time pickup setting multiplied by the long time pickup setting (Ir).The instantaneous current pickup amperage (Ii) is equal to the instantaneous pickup setting multiplied by the sensor plug amperage (In).Ground fault pickup values (Ig) is equal to the ground fault pickup setting multiplied by the sensor plug amperage (In).

Question 9

What is difference between BL and BD coils?

Accepted Answer

The difference between BL and BD Coils is a BL coil has a lower power consumption which is good for a contactor ONLY (no auxiliaries attached). Wherefore a BD coil has a normal power consumption but has the capability to use auxiliaries.

Question 10

Why choose Type B RCD for 3 Phase Variable Speed Drives?

Accepted Answer

For the 3 Phase Variable Speed Drives, the RCD type B or type B-Si is particularly suitable.It protects against fault currents with DC offset, which is true for three-phase power converters. In addition, it has enhanced immunity against nuisance tripping caused by: EMC common mode filters connected upstream VSD.Type B has a tripping delay allowing the inrush current to flow on power up.The permanent switching leakage currents existing in power converters (ex: 25kHz).Type B includes a "low pass" filter to ensure a trigger threshold that increases with frequency while complying with the personal protection curve (fibrillation). Please note: if the required sensitivity is 300mA, Selective type RCD should be proposed ensuring a non-triggering time of 50ms. More information can be found on the Earth Fault Protection guide: https://download.schneider-electric.com/files?p_enDocType=Catalog&p_File_Name=CA908066E+%28web%29.pdf&p_Doc_Ref=CA908066EWith regards to installation of these RCDs, they are mounted upstream of the Variable Speed Drives.See below example Schneider Electric offers Acti9 iID range of 4 Pole RCDs type B available in 30 mA sensitivity and type B-Si available in 30 and 300 mA sensitivity (Selective type is available) Click this link below to view the complete range of Acti9 iID RCDs available in Australia: https://www.se.com/ww/en/product-country-selector/?pageType=product-range&sourceId=7559&N=781354987+3098582207+2355967283+39384534

Question 11

How do I access the Tools Page in eDLT

Accepted Answer

Press and hold down the bottom left button, whilst continuing to hold then double press the top right button.Please note that access to the Tools Page can be disabled using C-Bus Toolkit software.

Question 12

How can I cable to the PNP and NPN type outputs for sensors / detectors, using the wiring diagram?

Accepted Answer

PNP and NPN type outputs are available as 3-wire sensors with a DC voltage power supply (the voltage limits are dependent on the specific sensor): PNP type: switching on the positive voltage load NPN type: switching on the negative voltage load These outputs are typical of photoelectric detectors, inductive proximity and other types of sensors.For a detailed explanation of PNP vs NPN, see the following FAQ: FA142566 PNP output The load (relay coil, contactor relay input, PLC input) must be connected between the "-" negative terminal and the midpoint. The corresponding PLC input is Sink. NPN output The load must be connected between the "+" positive terminal and the midpoint. The corresponding PLC input is Source. Some sensors have two PNP and NPN outputs (4-wire sensors) which are wired according to the diagram below.Note that we no longer sell sensors. Telemecanique Sensors, who were previously part of the Schneider Electric brand, were sold in 2023. You can go to their website - www.telemecaniquesensors.com - for more information, including contact details.

Question 13

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 14

What are the effects of dV/dt on a Motor when using a VSD?

Accepted Answer

As there is an impedance mismatch at the termination of the motor cable to the motor, there will be a reflected wave which travels back along the motor cable causingovervoltage’s. Overvoltage’s on the motor terminals can cause both partial and corona discharge which eventually wears down the winding insulation to failure. Corona discharge occurs when the overvoltage is large enough to cause electrons to flow from one winding to another whilst ionising the air between the conductors. They cause damage to the internal and external insulating material respectively. As the motor cable length increases the peak voltage increases. This can increase to a value of 2 to 2.5 times the DC bus voltage. Schneider Electric Offer Sinus filters or dv/dt filters to reduce the overvoltage across windings and high frequency currents in differential mode. Check out our current ATV600 or ATV900 catalogue for more information on output filters to help you with overvoltage mitigation.

Question 15

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 16

Why is their no display on the VIP400 relay

Accepted Answer

Please note, the VIP400 is a stand alone protection relay powered by its current sensors - when current is present in the MV network, the protections and the display work and it is possible to enter settings and view measurements - the VIP operates at a pickup current value as mentioned in the table below. When no current is flowing through the circuit breaker or when the current is too low, the VIP is off and nothing appears on its display. If current appears, the protection functions are activated and trip the circuit breaker or not, according to the settings. The additional time for the VIP relay to start when current appears is called the pick up time and is mentioned in the table below.

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