COMBA CPBBUV1-48055-UL User manual

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Comba Battery Backup Unit
CPBBUV1-48055-UL
Quick Installation Guide
Version: 1.1.2
THIS INSTALLATION GUIDE IS FOR FIRMWARE VERSION V8B01 ONLY.
FOR ALL OTHER FIRMWARE VERSIONS, PLEASE CONTACT
COMBA TECHNICAL SUPPORT FOR UPGRADE INSTRUCTIONS.
IMPORTANT! READ BELOW
UPON SYSTEM INSTALL, IF BATTERY STATUS ON WEBOMT SOFTWARE SHOWS “CUT OFF”
CHECK THE BATTERY VOLTAGE. IF ALL BATTERIES MEASURE OVER 12.5 VOLTS, RESET CUT OFF
STATUS IN MANAGEMENT TAB OF WEBOMT. IF BATTERIES MEASURE LESS THAN 12.5V, CONTACT
COMBA TECHNICAL SUPPORT FOR HELP.
COMBA TECHNICAL SUPPORT: [phone] ext 4
Contents:
- System Diagram …………………………………………………………………… 2
- Shipping Contents …………………………………………………………………… 3
- Cable connection …………………………………………………………………… 3
- WEBOMT operations …………………………………………………………………… 6
- Firmware V8E01 Update ……………………………………………………………….. 12
- Appendix – Alarms ……………………………………………………………………. 14
- Appendix A – FW Version Control ………………………………………………………16
- Appendix B – Typical Wiring Diagrams ……………………………………………… 16

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System Diagram:
AC Input Breaker
Battery
Out
put Breaker
Surge Arrestor
Relay for EPO control
Charger
Controller
External Alarms
Dry Contacts
AC Input
EPO Connection
Loads
Charger Communication

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Battery Backup Shipping Contents:
The BBU is shipped with the following. Please check accessories to ensure all are included:
1. BBU Chassis
2. (4) 55AH Batteries
3. (3) Battery Jumper Cables
4. (8) Sets of screws/washers for 4 batteries
5. (8) Battery Terminal Caps
6. (4) Liquid Tight Connectors
Note: For Comba Annunciator, See Annunciator Panel Manual.
Before Starting
Before beginning installation, check the batteries and chassis for any shipping damage. If there are any signs of
battery acid, cracked plastic around the batteries, or other deformities, contact Comba technical support for
assistance. Note that the batteries may be shipped with an electrical grease on the battery terminals to prevent
corrosion and oxidation.
Check the voltage of the batteries before installing. All batteries should be above 12.5V when installed. If the voltage
of any battery is below 12.5V, contact Comba technical support for assistance.
Cable Connection:
1. Turn off AC Input Breaker and Battery Output Breaker
 AC Input Breaker disconnects the AC supply to the Charger
 Battery Output Breaker disconnects the Battery from the Load/Charger

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2. (Optional) Install EPO switch
 If you wish to install an EPO switch: Note that the EPO connections have a preinstalled wire that
shorts the EPO+ and EPO-. Remove the preinstalled wire and connect the EPO switch; then turn
the EPO switch to its “Closed” position (Normal Status) and continue to the next step
 DO NOT Set the EPO switch to “Open” (Cut Off Status)
 The EPO switch can be installed at a remote location; note that the voltage-drop caused by the
wiring must be <14V
 The EPO function is triggered from a relay and this relay is energized by the battery or the
charger; if the battery is over-discharged, then the EPO function may not work properly
 If you do not wish to use an EPO switch, then continue to the next step directly (do not remove
the preinstalled shorting wire)
3. (Optional) Install Annunciator: See Annunciator BBU V(x) to Annunciator Panel Wiring Diagram.
4. Wire dry contact alarms and external alarms
Dry contact alarms default configurations:
 ALM 1: AC Fail
 ALM 2: Battery Low
 ALM 3: Charger Fail
 ALM 4: EXT ALM 1
 ALM 5: EXT ALM 2
 ALM 6: EXT ALM 3
 ALM 7: EXT ALM 4
If you need to define different alarms, it can be done using the WEBOMT tool.
Note that the BBU dry contact alarms provide both Normally Open and Normally Closed configurations;
refer to the picture below for wiring instructions
Alarms from external devices (BDA, AMS, etc.) can be tied into BBU EXT ALMs so they can be
annunciated using the LEDs from the BBU front panel. In order to match the order of the BBU
Annunciator LEDs:
 EXT ALM 1 shall tie to Signal Booster Fail (from BDA)
 EXT ALM 2 shall tie to Antenna Malfunction (Normally from BDA)
 EXT ALM 3 shall tie to System Component Failure (Normally from BDA or AMS)
 EXT ALM 4 not defined

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By default, the EXT ALMs work with Normally Open dry contact alarm wiring; the dry contact alarm type
(Normally Open or Normally Closed) can be configured using the WEBOMT tool. The two wires from dry
contact alarms can be tied to EXT ALMs positive and negative termination block – the polarity does not
matter.
5. Install AC input wires
Primary Lead / Earthing Lead: min. 14 AWG (cable is not included)
6. Install wires for load
 BBU provides 3 sets of terminations for loads
 All 3 loads share the same power being supplied by the charger or batteries
 Note: All Comba BDAs, MUs, RUs, and other -48V products come with a power cable.

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7. Install batteries, battery jumpers and connector caps
The batteries need to be installed in the straight up position as indicated in the picture (so that when the
BBU is mounted to the wall, the battery posts are on top/pointed towards the ceiling).
 Partially pull out the batteries to connect all the positive terminals first, then push the batteries
back in and connect the negative terminals.
 For safety, after installing the batteries always connect the black negative wire as the last step;
for battery removal, always disconnect the black negative wire as the first step.
NOTE: If provided with the unit, discard the battery support bar that was originally included in
the unit – it is no longer required to be installed.
8. Switch on both breakers; the BBU will boot up in 2-3 minutes and start working
Software Instructions:
The BBU should now be running; it will be configured to the default settings. To change the settings, or review
product identification information, you can log into the unit using the optional WEB interface (WEBOMT). After
logging in, the WEBOMT will provide the following information and options to you:
 Unit information: Serial Number, Firmware versions and upgrade etc.
 Unit status: alarms, charging status, temperature etc.
 Customize alarming
WEBOMT Login:
 Change IP address manually to 192.168.8.xxx/255.255.255.0 (DO NOT use 192.168.8.101)
Or wait for the IP address to be automatically assigned by the BBU
 Use 192.168.8.101 in the browser to login
(Comba recommends using Chrome in Incognito Mode, or Firefox in private mode)
Last to connect, or
first to disconnect
when installing or
uninstalling
batteries

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WEBOMT interface:
Overview:
- System Status:
o Normal: the charger is operating normally
o Fault: the charger is not operating normally
 In this state, the batteries may not be charging or the charger may not
be providing a consistent DC voltage to the load.
o Cut Off: the batteries are cut off from the charger
 In this state, the load does not have backup from the batteries.
- Output Voltage:
o The voltage that the BBU provides to the loads
- Charging Current:
o The current draw while the BBU is charging the batteries
- Battery Status:
o Cycle charging: BBU is using high current while charging the battery
Refer to Setting page: <Cycle Charge Voltage>
o Float charging: BBU is using low current to periodically charge the battery
Refer to Setting page: <Float Charge Voltage>
o Discharging: NO AC supply; all loads are running on batteries

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o Cut off: Either (1) battery voltage is lower than the Cut Off Threshold so they have been cut
off from the system to ensure they can still be recharged, or (2) batteries have not properly
charged, leading to the BBU to cut them off to ensure no battery or system damage occurs.
The unit might ship with the batteries in cut off status due to no batteries connected during
factory firmware flash.
Refer to Setting page: <Cut Off TH>
o No battery: Battery is not connected
- Battery Voltage:
o The voltage of the batteries
- Alarm Status:
o Refer to Appendix - Alarm section
Settings:
NOTE: After setting up a new unit or upgrading the firmware, always verify that all the
parameters in this page are set to default values; always contact Comba technical support
PRIOR to changing any of the parameters
- Low Voltage TH: default = 47.3V
o Define the minimum percentage the battery capacity (e.g. 30%), and the <Battery
Low> alarm will be triggered when the remaining battery capacity reaches 30%
- Cut Off TH: default = 44V
o Battery supply to the loads will be cut off if the battery voltage is lower than the
desired threshold; the charger will try to charge the batteries when AC is restored,
but it is not guaranteed that the batteries can be charged if the batteries are over-
discharged to the point of being damaged.
- Over Temperature TH: default = 50degC
o Over temperature alarm threshold
- Battery Connection Detection: The system will check once during each 24-hour period to
verify that all batteries are connected.
- Panel NO: See Annunciator Panel Manual.
NOTE 1: IF THE BBU DOES NOT SEE A LOAD (i.e., the BDA or fiber DAS devices is powered
down, or has been removed for some reason), the Battery Connection Detection alarm may
trigger. To prevent this, we recommend disabling the Battery Connection Detection alarm
until the BDA or fiber DAS device has been powered up or has been re-installed.

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Alarm Setting:
- Dry Contact Alarm setting page
o Users can define an alarm or a set of alarms (to trigger a single alarm when any one
of the alarms in the “set” triggers) to trigger dry contact alarms through 1-7
o Modifying the Dry Contact Alarms will result in a pop-up menu to enable which
alarms trigger the dry contact and the ability to rename the alarm. See image below.

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- External Alarm setting page
o Users can define whether the external alarm is a Normally Open or Normally Closed
alarm from an external device (such as the dry contact alarms from BDA), so the
external alarms will be triggered accordingly
- Alarm Enable/Disable page
o Users can enable or disable the listed alarms
- Alarm Detect Duration
o Users can define a time interval to specify the amount of delay before an alarm is
triggered; each number set here indicates 10 seconds (e.g. 5 = 50s, 10 = 100s, etc.) –
the system will monitor the alarm status during this duration and then will trigger
the alarm after the specified delay time.
Management:
Users can obtain information and perform tasks:
- Get device S/N, temperature, Firmware version
- Upgrade firmware
o After upgrading the firmware, the user must recheck all dry contact alarm settings to verify no
changes to these have been made by the upgrade

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- Change Login Password
- Export alarms log
- Reset Controller and Reset the Cut Off Status
o On most installations, the cut off reset will need to be performed on system turn up.
o After initial installation, if batteries show cut off status, do not perform cut off reset without first
checking battery health.
Panel:
- This BBU firmware version supports Comba’s Annunciator Panel. Please see the Annunciator Panel Quick
Install Guide for more information.

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Firmware V8E01 Update:
After firmware on the BBU is updated to V8E01m the following steps are needed to be performed to ensure the unit
functions properly.
After the BBU has restarted:
 Click [Management] -> {Reset} -> Battery Fault/ Cut off Reset
 Click [Alarm Settings] and adjust “Alarm Detection Duration” is 3 or greater. V8E01 firmware no longer supports
shorter durations.

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 Click [Settings] and ensure the correct battery type of “Lead-acid battery” is selected.
 Click [Overview] and ensure no alarms are present and “Battery Status” is “Cycle” or “Float” Charging.
o Power cycle BBU if alarms are present.

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Appendix - Alarms:
The following table shows the alarms that may be present in the WEBOMT software and what triggers them. The alarm
configuration for required alarms (and LED lights) is configurable to include any of the following:
Alarms Causes
Overall Any of alarms trigger
AC Lost Triggers when AC is lost and on system shutdown
Charger Fail
Triggers when the charger module fails (Output Voltage High, Output
Voltage Low, Current High, Temperature High, Circuit Short Protection
Mode)
Battery Low
Triggers when battery voltage is lower than the Low Voltage TH threshold.
May also trigger when batteries are in cut off status due to high
temperature, bad batteries, or full depletion.
To recover: Recharge batteries or contact Comba technical support for
assistance if batteries are in cut off status.
Over TEMP Triggers when the temperature of the BBU is higher than the threshold
Battery Over-Discharge
Triggers when the charger fails to charge the battery (Charger will still try to
charge even when battery voltage is lower than 40V at first, but if it still
fails after the attempts, system will stop trying to charge anymore and
trigger the alarm)
Comm. Fault
Triggers when the charger communication cable (the white connector with
red, white, and blue wires on the bottom of the Controller Module) is
disconnected from the MCU
Battery Connection Triggers when batteries are not connected to the BBU

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Dry Contact Alarm setting and Alarm Simulation:
- AC Lost: (trigger Dry Contact Alarm 1 by default)
Confirm Dry Contact Alarm setting:
o WEBOMT – Alarm Setting Page – Dry Contact ALM1
o Check AC Lost ALM
Either way listed below will trigger the alarm:
o Unplug AC input
o Switch off AC Input Breaker
- Battery Low: (trigger Dry Contact Alarm 2 by default)
Confirm Dry Contact Alarm setting:
o In WEBOMT – Alarm Setting Page – Dry Contact ALM2
o Check Battery Low ALM
o Check Battery Connection ALM
Either of the 2 methods listed below will trigger the alarm:
o Wait for the battery to drain about 16 hours with a 100W load and alarm will be triggered
o Change the "Battery Low Alarm Threshold” in the setting page to be higher than current battery
voltage to immediately trigger the alarm for testing purpose
- Charger Fail: (trigger Dry Contact Alarm 3 by default)
Confirm Dry Contact Alarm setting:
o In WEBOMT – Alarm Setting Page – Dry Contact ALM3
o Check Charger Fail ALM
o Check AC Lost ALM (optional, refer to your local AHJ’s requirement)
o Check Comm. Fault ALM
o Check Over Temp ALM
Either way listed below will trigger the alarm:
o Unplug the charger communication cable on Controller Module (the white connector with red,
white, and blue wires on the bottom of the Controller Module)
o Unplug AC input (optional, refer to your local AHJ’s requirement)
o Switch off AC Input Breaker
Note: AC Lost ALM can be unchecked from Dry Contact ALM3 if it is requested by the AHJ, so losing
AC will not trigger the Charger Fail Dry Contact Alarm. The simulation can only be done by
unplugging the charger communication cable
- If external alarms are used for BDA/AMS alarming (trigger Dry Contact Alarm 4-7 by default)
Refer to user manuals for BDA/AMS for alarm simulations

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Appendix A – Firmware Version Control:
FW Version
Release Notes
M66PSU9248EH10V
8E0
1
(Latest Version)
1. Fixed false alarms generated by internal cycle clock
M66PSU9248EH10V
8B0
1
1. Fixed battery cut off settings
–
will give 48 hour notice
before
removing batteries from service
2. Added end-of-life method for batteries
M66PSU9248EH10V8
9
01
1. Updated charging method
2. Added “Cut Off” battery status
3. Added reset methods in WEBOMT
4. Removed user control of voltage and max current
M66PSU9248EH10V8801
1. Bug Fix: Alarms from Slave Modules will be saved during power
lost
2. Bug Fix: Alarms will be kept status during 24H reboot
3. Added 0x0A4A Load Detection Current Threshold 0x0A49
Battery Detection Delta Voltage 0x0A44 Battery Detection Current
Threshold in WEB DEBUG Mode
4. Optimized Battery Detection, detects battery status with and
without load
5. On system bootup, when Charging Status = No battery, will
conclude "batteries not connected"
M66PSU9248EH10V8
705
1: Removed all Battery
Detection options except “Every 24 hours”
M66PSU9248EH10V8
601
Improvements
1.Added ‘Communication Fault Alarm’ which monitors the
communication link between the BBU controller and the Charger
Module.
2.Separated Battery Detection Alarm from Battery Low Alarm, the
Battery Detection Alarm can be individually triggered.
Bug Fixes
1.Minor bugs fixed
M66PSU9248EH10V8
404
Improvements
1. Added ‘Battery Connection Status’ Alarm
Bug Fixes
1. Fixed daily alarm issue from 8302
M66PSU9248EH10V8
302
Known bug:
Each day, all 7 alarms on unit will “test” and be sent
to FACP

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Appendix B – Typical Wiring Diagrams:
BBU to 700/800 MHz BDA (Typical Connections):
BBU to UHF BDA (Typical Connections):

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BBU with 700/800 Fiber DAS (Typical Connections, MU alarming all remotes and BBUs):

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Sample Installation:

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Sample Installation: