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How do I update my Smart-UPS firmware using the web interface of my Network Management Card?

Issue: Because the Firmware Upgrade Wizard is the most universal and preferred method of updating, we recommend using the APC Firmware Upgrade Wizard whenever possible. The APC Firmware Upgrade Wizard guides you through the update process and provides a consistent update experience. The Firmware...

What is LSC (loss of service continuity category)

LSC stands for: Loss of Service Continuity category The IEC 62271-200 proposes user-oriented definitions and classifications intended to describe how a given switchgear can be accessed, and what will be the consequences on the installation. When the accessibility of the various compartments are...

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

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...

How to remove the message “PowerChute Services are disabled due to invalid credentials.” on the PowerChute VM.

Issue: After installing PowerChute Network Shutdown for an ESXi host, the PowerChute VM reports “PowerChute Services are disabled due to invalid credentials. Please refer to the PowerChute User Guide for recovery procedures.” Product: PowerChute Network Shutdown versions 4.4.x, 5.x Environment:...

Which are the HE10 connectors for the TM3 Modules?

If you are using a TM3 modules with the letter "K" at the end that means that the module requires a HE10 connector. So have the following references for HE10 connector with flying leads: • TWDFCW30K (3m length) • TWDFCW50K (5m length) If you are using: • TM3DI16K or TM3DQ16TK you will need one...

What is the wiring scheme for a Direct on line (DOL) starter when connected to a single phase motor?

There are a number of issues: We do not manufacture a complete starter specifically for single phase motors but our 3 phase starters can be wired for single phase applications. Relative to their power output, single phase motors draw much greater current than 3 phase for 2 reasons: 1. The supply...

How do I connect / wire a contactor and overload to create a Direct On Line (DOL) Starter?

Attached is a .pdf file with pictorial diagrams (1) of how you would connect the four most common variants of a DOL starter. They show diagrams for 240 and 415 VAC control. The most common for small Direct On-Line Starters (DOLs) is 415VAC, as this requires no neutral to be fed to the starter....

Which is the default user and password for the Modicon M172?

If it is the first time you connect to the Modicon M172 via USB cable and the EcoStruxure Machine Expert HVAC asks you for credentials you will need to use this: User: administrator Password: password If you want to connect to the WebServer of the M172 and it asks you for...

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What is an Electrical "Ground Loop" - How does it affect my equipment?

Issue: What is an electrical "ground loop" and how does it affect my equipment? Environment: Ground loops can occur in any situation where multiple electrical devices are interconnected, especially when those devices are powered from different sources or located in different places with varying...

How to identify the M172 that I am using in the program?

In order to identify in our code which M172 model we are using we need to use the two (2) internal variables located in "Operators and blocks". The variables are Par_POLI (Polycarbonate code) and sysMSK (Mask number). If a M172 with 28IOs or 42IOs is connected then the variable "sysMSK" is equal to...

Voltage, Current and Resistance Explained

Issue: How do I remember the relationship of voltage, current and resistance in an electrical system? Environment: N/A Solution: Voltage (unit of measurement - volt) is like the water pressure in the pipe. When you turn on a faucet, the water pressure makes the water flow out. Similarly, voltage...

What is the difference between PNP and NPN when describing 3 wire connection of a sensor?

Most industrial proximity sensors (inductive, capacitive, ultrasonic and photo electric) are solid state. The term solid state refers to the type of components used within the sensor. Solid state electronic components such as transistors are used to switch the output of the sensor upon detection...

What is Power Factor Correction (PFC) - Does it help conserve energy?

Issue: What is Power Factor Correction (PFC) - Does it help conserve energy? Answer: Explanation 1: Power Factor Correction (PFC) doesn't directly reduce the overall electric consumption of a device or system, but it does play a role in optimizing the efficiency of electrical systems, which can...

What size overload do I use with a star delta starter ?

In the majority of cases, the overload of a star delta starter is fitted below the delta contactor with wiring connections to one side of each of the motor windings. The other side of the windings are connected to the line contactor. This means the motor load is split between 2 contactors but the...

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

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...

What are the differences between 380V AC, 400V AC and 415V AC mains supplies and what voltage equipment should I use?

For many years, mainland Western Europe has used a mains 3 phase electricity supply nominally rated at 380V AC 50Hz while the UK used 415V AC 50Hz. Currently, all Western European 3 phase supplies are classified 400V AC. In reality, there is no 400V AC supply unless you create one locally. 400V AC...

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