Guides and Walkthroughs


Below you will find our product support guides to help ensure proper configuration and operation of our products.


Support Guides and Walkthroughs

Support Guides and Walkthroughs

Alarm Termination Board for CXCM4 Default Configuration Guide

The following diagrams show the default relay assignment for the comm/net termination board for Alpha Cordex power plants.

Checking for other alarm assignments

If the alarms have been re-assigned and an onsite label is not provided to show the relay assignment, that can be accessed via the CXCM4 controller.

With the web interface of the controller, the alarm assignments can be accessed as follows:


Main Menu -> Alarms -> Configure All -> Show All


This will show you all assigned alarms and their relay assignments.





Comm/net Systems Panel Termination Guide

The following spread sheet provides termination information on many of the most popular Comm/net panel products. Including required lug sizes, size limits, and circuit counts.

  • Termination Guide




  • CXC 120: Quick Alarm Wiring Guide

    Purpose and Applicable Part/Model Numbers


    This guide describes the wiring regime of CXC 120 Facility Site Alarm Cross Connect Cabinet.


    Active Alarm Modules

    There are two versions of the active alarm module r01 and r02. The boards behave slightly differently but this article applies to both. The differences will be explained.

    Active alarm modules require no input power in order to monitor the a channel. As a result however they will not work to monitor analog inputs such as temperature sensors.


      Wiring the inputs

      1. Connect all alarm input connections to your active alarm board inputs. The upper screw terminal is "IN" the lower screw terminal is "+24V". Connect "COM" (Common) connections to the +24V terminal and connect NC/NO connection to the "IN" terminal.

      2. Ensure all devices wired to the active alarm module are not in alarm.

      3. Regardless of the input type of the alarm (NO/NC) set the output switch such that the alarm LED is off when no alarm is present.



      Wiring the outputs

      Wiring Individually monitored outputs

      If the site wants to monitor an input individually with their system this can also be accomplished using the CXC 120.


      1. Wire a cable to the two captive screws on the output relay. This is located just above the switches that set the output relay's state on the right hand side of the board. The upper screw is COM and the lower screw is NC/NO. The state of the output relay can be determined in the way described above in "Programming the Annuciator", or it can be determined with a meter.

      2. Connect this cable directly to the AMU. Connect the COM connection to the "+24V" or "COM" terminals on the AMU. Connect the "NC/NO" connection to the "IN" or "NC/NO" terminal on the AMU.



      Programming the Annuciator

      If you followed the above steps correctly, and if none of the panels are in alarm all the LED's should be off, and;

      • For r01 boards your output is NO
      • For r02 boards your output is NC on channel 1-18. Channel 19-24 are NO

      You can confirm this with a meter.


      1. Following the label on the back of the annuciator, select the channel you would like to program.

      2. Select the desired alarm level and set it to NO or NC depending on your output state as described above. Follow the diagram on the back of the annunciator.

      3. As soon as you press "Select" after programming an alarm input it is saved to memory. If you set your output state correctly and programmed the annunciator correctly, the panel will not be in alarm.

      4. To disable an input channel set the switch to "DIS"




    Passive Alarm Modules

    The passive alarm module is used to monitor alarms with an external power source. The power source can come from the connected device or from the AMU depending on how the system is wired. The passive alarm module can also be used to monitor analog inputs such as a temperature sensor or shunt.


      Wiring a passive alarm module (Alarm Relays)


      1. Connect your alarm input to the input terminal block. The upper connection is NO/NC, the lower connection is COM.

      2. Following the label on the back of the annuciator, select the channel you would like to program.

      3. Select the desired alarm level and set it to NO or NC depending on the state of you input alarm. Follow the instructions on the annuciator panel.

      4. Make sure the jumper above the input is set to normal.

      5. If this input needs to be individually monitored, wire the AMU to the output terminal block. The Upper connection is COM, the lower connection is NC/NO.

      6. To disable a channel, remove the jumper entirely.


      Wiring Analog Inputs


      1. Wire the analog input to the passive alarm module input terminal.

      2. Connect the device that will be monitoring the analog input to the output terminal corresponding to the input you just wired.

      3. Place the jumper above the input terminal block in the Bypass position.




    Wiring the Summary Alarm Outputs

    There are four levels of summary alarm: Critical, Major, Minor and Warning. Each has its own 8p8c modeler jack (RJ45) output. These are intended to allow sites with a limited number of inputs on an alarm monitoring system to monitor summaries of all alarms in a given class instead of each individual alarm.


      1. Wire a Cat-5 cable with an RJ45 to the termination board in the CXC 120. Connect the other end of the cable to the AMU.

      2. The pin out for the 8p8c jack on the CXC 120 is as follows:


        Pin 1: COM

        Pin 2: NC

        Pin 3: COM


    Connect the COM connection to the +24V or COM input on the AMU. Connect the NC/NO connection to the "IN" or "NC/NO" terminal on the AMU.




    GMT Distribution

    Eight GMT fuse positions are provided for powering an Alarm Monitoring Units, Ethernet switchs, or other -48VDC devices. The total current for all ancillary equipment should not exceed 14A.

    Refer to the silk screen on the board for polarity information.





    Daisy Chaining Comm/Net Products Guide

    Alarm daisy chaining is a commonly used process for connecting a series of product alarms from the same locations. With Comm/net products this is often seen in BDFB’s or with Comm/net Systems panels in the same rack row.


    Daisy Chaining with a terminal block

    Above is a diagram showing a NC daisy chain for a series of terminal block alarms.

    The COM connection of the first panel is wired to the alarm monitoring system. Then in the middle panel the NC is connected to the COM of the next panel in the row. Then that pattern is repeated as many times as necessary down the row or up the BDFB. Then the NC connection from the last panel is connected to the alarm monitoring system.

    The same technique can be used for NO, just wire to that pin of the terminal block instead of NC.


    Daisy Chaining with RJ45 connections

    * Use IEC T568B terminations for all RJ45 Alarm monitoring on Comm/Net products.

    WARNING: When using RJ45 daisy chaining the NO condition must be monitored, you cannot monitor NC.

    When daisy chaining panels with RJ45 connections the two RJ45 jacks on Comm/net products are commend together. So simply run a cable connecting one panel to the next panel and so on down the row. Then on the last panel connect the jack to alarm monitoring system. Refer to the manual for the product you are wiring for the pin out of the connector.

    BDFB’s come with the daisy chain wiring already in place from the factory. So all you need to do is connect the last jack in the chain to the alarm monitoring system.


    IEC T568B Pin out





    GMT 50 Alarm Termination Pin-Out Guide

    Purpose and Applicable Part/Model Numbers


    The following diagram details the RJ 45 (8p6c) Alarm pin out for the GMT 50 distribution panel.


    • 016-111-10 GMT Fuse Panel 50 Series Dual A/B input

    • 016-112-10 GMT Fuse Panel 50 Series Single input


    Pin-Out Guide

    The two jacks are located between the input return bus bars, in the rear center of the panel. The jacks are wired in common to allow for easy daisy chaining.





    Status Monitoring Overview

    Purpose and Applicable Part/Model Numbers


    The document details the local and remote status monitoring capabilities of Comm/nets major DC distribution products. This document applies to products and firmware revisions shipping in 2015 or later. For information on the monitoring capabilities of products manufactured before 2015 contact Comm/net Support.


    Local and Remote Data Available


    The chart on page 1 shows the data available locally and remotely from Comm/net’s product families. At this time, fuse panel products such as GMT and KTK/KLK provide front panel LED indication and dry contact output for fuse fail alarm only.

  • Local and remote status monitoring reference chart download




  • Alpha CXCM4: Firmware Upgrade Walkthrough

    Purpose and Applicable Part/Model Numbers


    This walkthrough will help you to upgrade the firmware in an Alpha CXCM4.


    Procedure Walkthrough


    Where to download Updates:

    https://www.alpha.ca/web2/service-and-support/support/software-firmware-downloads

    Note: A user account is required to download firmware.



    What is needed?

    Latest Boot loader, and latest software version.



    Will there be any interruptions to DC plant operation during the upgrade?

    No. There may be false alarms during the restart so site monitoring personnel should be warned ahead of time. The rectifiers will continue to run at the last specified float voltage when the controller is taken off line. So there should be no power interruption.

    If an LVD is installed Alpha recommends placing the LVD into bypass mode. However CSI plants almost never have LVD's installed.



    Will configuration settings be lost during the upgrade?

    During a normal upgrade the configuration should be preserved. However it still should be backed up in case something goes wrong. This is also useful in case the controller ever needs to be replaced.

    To do this enter the controllers web interface. Then go to "Log and Files" ->Manage Configuration

    From this menu the config file can be downloaded to a computer. It can be re-uploaded from the same menu.





    Comm/net Systems Battery Bay to DC Plant Alarm Connection Walkthrough

    Purpose and Applicable Part/Model Numbers


    This document covers the alarm wiring of a Comm/net battery rack to a Comm/Net power plant with a Cordex controller.

    Note: This document is intended for all Battery rack families except for the Cobalt ESS Battery Bay family.


    DUE TO PROXIMITY TO POTENTIALLY HARMFUL ELECTRICAL EQUIPMENT DURING THIS PROCESS INSTALLATION SHOULD ONLY BE PERFORMED BY QUALIFIED PERSONNEL WITH PROPER TOOLS AND PROTECTIVE SAFETY EQUIPMENT.


    Procedure Walkthrough


    Line drawing



    1. Locate the 538-190-10 connector (male or female) on the top left of the battery bay on the left side of the Battery bay. This connector will allow digital alarm monitoring of the Battery Bay.


    2. If you haven’t already, run un-terminated 18 gauge wire between the battery bay and the Rectifier bay do so now.



    3. Once the correct length of the wire has been determined, cut the wire and crimp a male/female connector onto one end of the 18 gauge wire (depending on which connectors are present at the termination point on the Battery Bay and the rectifier bay).


    4. Connect one termination of the wire to the male/female 538-190-10 connector at the top of the battery bay.


    5. If the rectifier bay you are connecting to contains a 1RU Rectifier Bay Alarm Termination Panel, then continue to Step 7. If you are connecting the battery bay directly to a DC plant alarm card, continue to step 8.



    1RU Rectifier Bay Alarm Termination Panel Instructions


    6. Connect the wire to the D2-2 digital input on the left side of the 1RU Rectifier Bay Alarm Termination Panel


    7. If the Rectifier bay you are running to contains a 1RU Rectifier Bay Alarm Termination Panel, then you must move the D2-1 jumper to the left. This jumper can be found to the right of the D2-2 alarm termination point. This jumper is the second down from the top and is, again, found to the right of the D2-2 Alarm Termination point.


    8. If the DC Plant has and Alpha Alarm Card as shown below, you must reprogram the rectifier bay in order to complete the installation. Please see Alpha's Cordex CXC Manual for reprogramming instructions.

    Note: This manual applies to the current firmware revision. If you are using an older-than-current firmware revision, you must contact Alpha support here. Firmware download support is available here.





    GJX/HDDC Controller Breaker Inventory and Calibration Walkthrough

    Purpose and Applicable Part/Model Numbers


    This is a walkthrough of inventorying breakers and calibrating sensors in GJX and HDDC units utilizing firmware version r1.7 only.

  • 016-400-10 HDDC Single input, high ampacity output
  • 016-402-10 HDDC A/B input, C bus output -200A
  • 016-406-10 HDDC A/B isolated input/output
  • 016-407-10 HDDC A/B input, C-output diode routed
  • 016-137-10 GJX Single DC input, -48VDC, 800A
  • 016-969-10 GJX Single DC input, -48VDC, 1200A


  • Procedure Walkthrough


    To inventory breakers:

      1. Turn on all breakers that need to be inventoried
      2. From the normal operation screen, press the “Menu” button
      3. The screen will now display “Auto Circuit Breaker Inventory”
      4. Press “Enter”
      5. It will then display “Caution”
      6. Finally it will display “Auto Circuit Breaker Inventory Complete. Press enter to save, Press clear to abort”
      7. Press “Enter”.

    Calibration Menu:

      1. Press and hold “Menu” + “Enter” simultaneously to enter the calibration menu.
      2. From here you can make adjustments to the voltage and current sensing.
      3. To make fine current adjustments: This should be done after the panel is running load and at its expected operating temperature.
        a. Press menu to scroll through the calibration options until you reach “A Current Gain”. Do not use A current offset.
        b. The current being read will be displayed. Adjust it up or down using the Menu and Scroll buttons. It may take several button presses before the number changes. The current reading may also be rapidly cycling up and down by an amp, just press the “Menu” or “Scroll” button until it is stable
        c. When the current reading is adjusted properly press enter.
        d. Then use menu to scroll to the “Save and Exit” option in the calibration menu.
        e. Then press enter as prompted to save the changes.
      4. To adjust the voltage display:
        a. Enter the calibration menu
        b. Select “Adjust A Volts” or gain
        c. Adjust the voltage using the “Menu” and “Scroll” buttons
        d. Press “Enter”, then select “Save and Exit” and press “Enter” as prompted to save the changes.

    There are options to adjust B current and B volts as well. These only apply to duel input models (HDDC only). The rest of the options in the calibration menu are for calibration at the factory.





    How to Clear a Ground Fault Alarm Walkthrough

    Purpose and Applicable Part/Model Numbers


    If you have ground fault alarm present on your ECM the following steps will clear that alarm.

  • 740-234-10 EdgePower Supervisor Module Array


  • Procedure Walkthrough


    For firmware version r03:

      1. Enter the ground settings menu ( Main Menu -> Settings -> GND Sense -> GND Zero)
      2. Perform a ground zero offset

    For firmware versions r01 and r02:

      1. Enter the ground Zero offset menu (Main Menu -> Settings -> Advanced -> Calibration -> GND Zero Offset)




    Inventory a Circuit Breaker in an HDX Power Distribution Center Walkthrough

    Purpose and Applicable Part/Model Numbers


    This is a walkthrough for inventorying circuit breakers on an HDX Compact DC Power Distribution Center.

  • 016-412-10 HDX Single input 300A
  • 016-410-10 HDX A/B isolated input, output, 300A
  • 016-450-10 HDX 400 isolated A/B input breaker panel
  • 016-451-10 HDX 400 single input breaker panel
  • 016-452-10 HDX isolated A/B/C input breaker panel


  • Procedure Walkthrough


      1. Once the circuit breaker you wish to inventory is installed, lift the front cover of the panel.
      2. The circuit board on the inside of the door has a series of dip switches that are used to inventory breakers.
      3. Each switch is labeled with a silk screen on the board indicating which channel the switch will inventory.
      4. There is an arrow labeled "IN". To inventory a breaker press the dip switch so that side facing the "IN" arrow is depressed. In the image below A1 and A2 (switch 1 and 2) are inventoried breakers. A3 and A4 (switch 3 and 4) are not in inventory.

    This completes the breaker inventory process.





    Inventory H2 Zero Hydrogen Sensor Walkthrough

    Purpose and Applicable Part/Model Numbers


    This article describes how to inventory Hydrogen sensors in an H2 Zero VRLA Hydrogen Ventilation System. It applies to main controller firmware version r05 and higher.

    If you have a controller with firmware version lower than r05 please contact comm/net support.

  • 016-551-10 H2 Zero, Main Unit
  • 016-552-10 H2 Zero, Remote Hydrogen/Temperature Sensor
  • 016-553-10 H2 Zero, Control Module


  • Procedure Walkthrough


    To check which firmware version power cycle the controller using the on/off switch on the board behind the main controller. To access the Rear I/O board with the switch, loosen the four thumb screws on the front of the panel, and lift the controller out of the controller enclosure.


    To add a sensor into inventory:

      1. Unscrew the four thumb screws holding the main control in the wall mounted enclosure to access the rear I/O board.
      2. Power off the controller using the on/off switch on the rear I/O board.
      3. Connect the Cat-5 cable from the sensor(s) to the rear I/O board in the desired position. There are four sensor positions on the rear I/O board.
      4. Turn on the main controller using the switch on the rear I/O board.
      5. Re-secure the main controller to the enclosure using the four thumb screws
      6. As the controller powers on it should automatically inventory the new sensor(s). The front LED's on the main controller should display blue for each sensor connected. If the sensor is not inventoried check your firmware version and contact comm/net support.

    To clear the sensor inventory:

      1. Unscrew the four thumb screws holding the main control in the wall mounted enclosure to access the rear I/O board.
      2. Power off the controller using the on/off switch on the rear I/O board.
      3. Disconnect all the sensor from the rear I/O board.
      4. Power on the controller using the on/off switch on the rear I/O board.
      5. Watch the display as it powers up. After it completes its self test it should display no sensor found, then it will say EE PROPM Cleared. This completes the process of resting the inventory. If this process did not clear the inventory check you firmware version as described above and contact comm/net support.




    Setting the Fuse Ampacity on a BCM Walkthrough

    Purpose and Applicable Part/Model Numbers


    This document is a walkthrough of the procedure to set the ampacity of a BCM unit.

  • 016-1060-10 Basic Control Module
  • 016-1090-10 Basic Control Module GJ Controller


  • Procedure Walkthrough



    1. To set the fuse ampacity for the module you must use the two pots at the rear of the device, shown below (SW1 and SW2). If the BCM is already installed remove the two screws on the front of the device.

    2. There are 10 numbered locations on the pots that cosponsored roughly to the positions for 100A-1200A.

    3. Plug the BCM back into its socket, once it completes the power up cycle it should display an ampacity of fuse. If it is incorrect tweak SW1 and SW2 until the display reads correctly.





    VIDEO: How To Inventory a Circuit Breaker in an HDX

    Purpose and Applicable Part/Model Numbers


    This video is a how-to on inventorying breakers for these HDX models.

  • 016-412-10 HDX Single input 300A.
  • 016-410-10 HDX A/B isolated input, output, 300A
  • 016-450-10 HDX 400 Isolated A/B Input
  • 016-451-10 HDX 400 Single Input A/B Input
  • 016-410-10 HDX A/B isolated input, output, 300A


  • How to: HDX Breaker Inventory