Troubleshooting


Below you will find our product troubleshooting documentation to help pinpoint and resolve commonly known issues.


Product Troubleshooting

Troubleshooting and common issues

Alarm Daisy Chaining: which connector is input which is output? - Quick Answer

Purpose and Applicable Part/Model Numbers


This guide applies to all Comm/net products that have (2) 8p8c/Can (RJ45/Can) jacks for alarm daisy chaining.


Which connector is input which is output?


Many Comm/net products have (2) 8p8c/Can (RJ45/Can) jacks for alarm daisy chaining. The question often comes up which jack is the input and which is the output. The answer is that it does not matter. Both jacks are wired in common so you wire to either as long as you are consistent down the chain. However if you do daisy chain the alarms you will need to monitor the NO (Normally Open) condition.





Are ROSA Alarm Systems Compatible With Comm/net products? - Quick Answer

Purpose and Applicable Part/Model Numbers


This applies to all Comm/net Systems products.


Are ROSA Alarm Systems Compatible With Comm/net products?


All comm/net products have Form-C dry alarm contacts for alarm monitoring. This is compatible with digital inputs on ROSA systems such as the ROSA EM module.


Cisco ROSA EM Element Management System Data Sheet



DCX/DCX LP: What is the twisted pair of red and black wire for? - Quick Answer

Purpose and Applicable Part/Model Numbers


  • 016-1000-10 400 ampere disconnect, -48VDC Battery Disconnect
  • 016-1001-10 400 ampere disconnect, -48VDC Battery Disconnect w/ shunt
  • 016-1002-10 600 ampere disconnect, -48VDC Battery Disconnect
  • 016-1003-10 600 ampere disconnect, -48VDC Battery Disconnect w/ shunt
  • 016-1004-10 800 ampere disconnect, -48VDC Battery Disconnect
  • 016-1005-10 800 ampere disconnect, -48VDC Battery Disconnect w/ shunt
  • 016-1006-10 1,000 ampere disconnect, -48VDC Battery Disconnect
  • 016-1007-10 1,000 ampere disconnect, -48VDC Battery Disconnect w/ shunt
  • 016-1008-10 1,200 ampere disconnect, -48VDC Battery Disconnect
  • 016-1009-10 1,200 ampere disconnect, -48VDC Battery Disconnect w/ shunt
  • 016-200-10 400 ampere disconnect, base unit
  • 016-198-10 400 ampere disconnect w/ shunt
  • 016-201-10 600 ampere disconnect, base unit
  • 016-202-10 800 ampere disconnect, base unit
  • 016-199-100 800 ampere disconnect w/ shunt
  • 016-203-10 1,000 ampere disconnect, base unit
  • 016-204-10 1,200 ampere disconnect, base unit
  • 016-207-10 1,200 ampere disconnect w/ shunt
  • 016-1314-10 DCX LP, 1000A Breaker, w/ shunt
  • 016-1344-10 DCX LP, 1200A Breaker, w/ shunt
  • 016-1345-10 DCX LP, 1000A Breaker, w/ shunt and DMP (Digital monitor Panel)
  • 016-1346-10 DCX LP, 1200A Breaker, w/ shunt and DMP (Digital monitor Panel)


  • What is the twisted pair of red and black wire for?


    The red and black twisted pair of wires with a green terminal block, is connected to a current metering shunt inside the DCX / DCX LP. It is not currently used by any feature on the DCX or DCX LP. It was put in place for a future current measuring product.

    It can be used to connect to an external system for current monitoring, such as a power plant controller input.





    HDX is showing a breaker trip alarm with no breaker tripped? - Quick Answer

    Purpose and Applicable Part/Model Numbers


    This article addresses issues with breaker alarms in a Comm/net Systems HDX unit.

  • 016-412-10 HDX Single input 300A
  • 016-410-10 HDX A/B isolated input, output, 300A
  • 016-450-10 HDX 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


  • HDX is showing a breaker trip alarm with no breaker tripped?


    This is likely caused by an incorrect breaker inventory. To solve the issue make sure your breaker inventory is correct.





    Troubleshooting Guide: H2 Zero Field Issues

    Purpose and Applicable Part/Model Numbers


    This document applies to 016-550-10 H2 Zero system. This includes the fan unit, wall mounted controller, and 1-4 hydrogen sensors. With main controller firmware version r05 or higher.

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


  • Common Controller Issues


    Issue: Main Controller displays “System Fault”


      1. Check to see if the hydrogen sensor(s) LED is illuminated on the main controller. If not complete the following steps:
        a. Remove the main controller from the enclosure by losing the (4) thumb screws in the controller enclosure. This will allow the technician access to the I/O board.
        b. Check to make sure the LED on Hydrogen sensor is working. It should flash slowly; it comes on about once every 10 seconds.
        c. If the light is not flashing your hydrogen sensor is not working and The RJ45 cable may not be seated properly.
        d. Check to make sure all connections are wired to the correct locations on the rear I/O board. Consult the H2 Zero installation and operation manual that came with the unit. That document is also attached to this article.
        e. Check to make sure the 8p8c Modular Jack (RJ-45) connections for the sensor(s) and fan unit are fully seated in rear I/O board.
        f. Check connectivity on the Cat-5 cables between the sensors and the rear I/O and the fan unit and rear I/O.
        g. Power down using the switch on the rear I/O board.
        h. Check to make sure the controller ribbon cable is fully seated on the rear I/O board.
        i. Restart the controller by toggling the on off switch on the rear I/O board.
        j. If you complete all of these steps and the issue is still not resolved contact comm/net support.

    Issue: Hydrogen % on display reads as a series of question marks:


      1. Contact comm/net support.

    Issue: Controller displays Connection to Sensor Lost.


      1. Check all sensor connections.
        a. Remove the controller by loosening the (4) thumb screws in the controller enclosure.
        b. Check to make sure the LED on Hydrogen sensor is working. It should flash slowly; it comes on about once every 10 seconds.
        c. If the light is not flashing your hydrogen sensor is not working and may not be connected properly.
        d. Check to make sure all connections are wired to the correct locations on the rear I/O board. Consult the H2 Zero installation and operation manual that came with the unit. That document is also attached to this article.
        e. Check to make sure the 8p8c Modular Jack (RJ-45) connections for the sensor(s) and fan unit are fully seated in rear I/O board.
        f. Check connectivity on the Cat-5 cables between the sensors and the rear I/O and the fan unit and rear I/O.
        g. Power down using the switch on the rear I/O board.
        h. Check to make sure the controller ribbon cable is fully seated on the rear I/O board.
        i. Restart the controller by toggling the on off switch on the rear I/O board.
        j. If you complete all of these steps and the issue is still not resolved contact comm/net support.


    Common Fan Unit Issues


    Issue: Unit displays a system fault light:


      1. Check all incoming connections. Check connectivity on the Cat-5 cable between the fan unit and main controller.
      2. Contact Comm/net Support.




    Troubleshooting Guide: HDDC, GJX, or RPR Showing No Load

    Purpose and Applicability


    This article applies to HDDC, GJX, and RPR units that are reading 0A, and meet the following criteria:

      1. Have never read current
      2. Have a load on the panel

    If all these conditions are met then there may be an issue with the shunt polarity.

    This issue can be fixed without interruption of power routing.


    Applicable Part/Model Numbers


  • 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
  • 016-950-10 RPR 150A A/B -48VDC input, C-bus redundant diode routed power module
  • 016-951-10 RPR 300A A/B -48VDC input, C-bus redundant diode routed power module


  • Procedure Walkthrough


    1. Locate the shunt jumpers on the back of the unit door (Jumpers may be in the opposite configuration in your panel).



    2. Turn off the controller using the switch on the back of the door.


    3. Now remove all the shunt jumpers. See the figure below:


    4. Lastly re-install the jumpers in the optimist position of when they stated. See Figure below:


    5. Now turn the controller back on with the switch. Once the controller boots up check if the panel is reading current.


    6. If the panel is still not reading current, contact Comm/net Systems Support.





    DCX Emergency Power Off Circuit Known Issue

    Purpose and Applicable Part/Model Numbers


    This document refers to a known issue with EPO circuts in DCX units.

  • 740-210-10 DCX Termination Board installed into any DCX unit


  • Troubleshooting Steps


    The EPO (Emergency Power Off) circuit can be enabled and trip the main DCX breaker even if the EPO switch is disabled. This will occur if the EPO NO (Normally Open) connection comes in contact with GND (Ground) or Facility RTN (Return). For example if the wire touches conduit, the battery stack frame, a ground bar, battery return etc.





    DCX LED and Premature Alarm Known Issues

    Purpose and Applicable Part/Model Numbers


    This document addresses issues with LEDs lighting up and premature alarms.

  • 016-1000-10 400 ampere disconnect, -48VDC Battery Disconnect
  • 016-1001-10 400 ampere disconnect, -48VDC Battery Disconnect w/ shunt
  • 016-1002-10 600 ampere disconnect, -48VDC Battery Disconnect
  • 016-1003-10 600 ampere disconnect, -48VDC Battery Disconnect w/ shunt
  • 016-1004-10 800 ampere disconnect, -48VDC Battery Disconnect
  • 016-1005-10 800 ampere disconnect, -48VDC Battery Disconnect w/ shunt
  • 016-1006-10 1,000 ampere disconnect, -48VDC Battery Disconnect
  • 016-1007-10 1,000 ampere disconnect, -48VDC Battery Disconnect w/ shunt
  • 016-1008-10 1,200 ampere disconnect, -48VDC Battery Disconnect
  • 016-1009-10 1,200 ampere disconnect, -48VDC Battery Disconnect w/ shunt
  • 016-200-10 400 ampere disconnect, base unit
  • 016-198-10 400 ampere disconnect w/ shunt
  • 016-201-10 600 ampere disconnect, base unit
  • 016-202-10 800 ampere disconnect, base unit
  • 016-199-100 800 ampere disconnect w/ shunt
  • 016-203-10 1,000 ampere disconnect, base unit
  • 016-204-10 1,200 ampere disconnect, base unit
  • 016-207-10 1,200 ampere disconnect w/ shunt


  • Troubleshooting Steps


    Reported issue: No lights on the DCX panel

    Possible Causes:

    1. The two GMT fuses on the board are blown

    2. The return cable is not wired to the bottom pin of the green terminal block

    3. The jumper at the bottom right hand corner of the board is not set properly

    4. The return cable is not wired to the battery stack correctly. It should be wired to the opposite end of the battery string as the termination plate.



    Tests


    1. Visually ensure the return cable is terminated to the bottom (pin 5) of the green terminal block, see below diagram

    2. Test the voltage between TP1 and the return line. It should read -54V. TP1 is located near the bottom of the board under the right hand corner of the EPO enable/disable switch.


    Fig 1: Point 1 is the voltage selection jumper. Point 2 its Test point 1 (TP1).


    TRD Problems


    Premature Alarms

    TRD units are tested with the temperature sensors they are sent with. If the TRD is replaced but the temperature sensors are not replaced there may be a calibration issue. A short of one of the legs on the temp sensors to the lug can cause the issue. A failed temp sensor can also be an issue.


    Temperature sensor with shorted legs:





    EDGEPower 8125 Does Not Read Current Known Issue

    Purpose and Applicable Part/Model Numbers


    This article details steps for troubleshooting an EDGEpower 8125 panel that is not reading current during initial power up. This article does not apply to a panel that was reading current and has stopped during service.

  • 016-1599-10 EDGEPower 8125


  • Troubleshooting Steps


    Applies to: firmware 034-037-34 r03 (Menu structure is slightly different for firmware versions 034-037-34 r01 and r02)

    Before proceeding, please find the revision number of the panel and its serial number. This is located on the back side of the panel door.


    Step 1: Ensure breaker inventory has been taken.

    Step 2: Using an Amp Clamp, verify there truly is a load on the any of the output circuits.

    Step 3: Next go to the raw counts menu (Main Menu -> Settings-> Settings(page 2) -> Advanced -> Test Modes -> RAW). Take a photo or video of this screen to record all the values. The channels labeled A1-A4, and B1-B4 are the raw outputs from the current sensors. Check with the Firmware Engineering Staff for appropriate values from the current sensors based on the SN of the panel.

    Step 4: Clear the EEPROM. (Main Menu -> Settings -> Settings(page 2) -> Advanced -> Memory -> EEPROM). From this menu you can clear the EEPROM, once this is done the panel will go into touch calibration. Complete the touch calibration.

    Step 5: Perform a ground zero offset and breaker inventory.

    Step 6: If the panel in now reading current but the value is not within 1A . Calibrate the panel. If the panel is not reading any current still, complete step 3 again and consult engineering staff to determine if the panel needs to be replaced or the ECM needs to be replaced, or some other solution.


    Click here to download a diagram of the UI menus for the ECM firmware r03 to help with navigation.





    H2 Zero Fan Control Board Firmware Known issue

    Purpose and Applicable Part/Model Numbers


    This document describes issues related to firmware mismatches in the H2 Zero unit.

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


  • Troubleshooting Steps


    Fan Control Board Firmware Mismatch

    If the fan control board and the main control board are both not programmed with the most current firmware, the unit can enter a condition in which the fan unit will stay on continually.


    Solution

    Check the firmware version of the control board, if it is not r05 turn the controller off and this should turn the fan off. If the fan shuts off, then mismatched firmware is the issue. If this is is the issue then the controller board will need to be swapped for a current board.


    Please contact Comm/net Systems Support for RMA (Return Merchandise Authorization) instructions.