Eaton BladeUPS none, Руководство пользователя

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118 Eaton BladeUPS 5 kVA to 60 kVA (N+1) User’s Guide 164201649—Rev 14
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The CAN Bridge Card in each paralleled UPS provides connectivity for system metering and operational mode
control. Startup, shutdown, and auto-calibration commands given at one UPS also command the other UPSs in
the parallel system. The UPSs in a parallel system are in constant communication to monitor settings and
status information.
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If one UPS in a parallel system transfers from High Efficiency operation to Standard operation, the other UPSs
transfer also.
When a parallel system is on battery, the front panels display the battery status information of the battery with
the lowest runtime remaining. In a capacity related system, when the first UPS shuts down, the other UPSs
also shut down. In a parallel system that is not fully loaded, the system shifts load to UPSs with the strongest
batteries or additional EBMs to maximize runtime.
In a parallel system configured for redundancy, the UPSs use a distributed bypass, and the following alarms
cause an individual UPS to shut down instead of transferring to Bypass mode:
• Failure of the fan, fuse, temperature sensor, or power supply
• Inverter AC under voltage
• Battery current limit
• DC link under voltage
• Battery over voltage
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BladeUPS 12i model only. The redundant signal wiring provides redundant backfeed protection in case of CAN
failure in the parallel system. If the CAN fails, the UPSs transfer to Normal mode. The system runs
unsynchronized, and any UPS can transfer to Battery mode as necessary. If any UPS must transfer to Bypass
mode, the redundant signal wiring allows the entire parallel system to transfer to Bypass mode without
backfeeding.
BladeUPS 12model only. The redundant signal wiring provides synchronization protection in case of CAN
failure in the parallel system. The system uses the redundant signal wiring to determine the system state when
the CAN is down. The system operates the same as with CAN, except for a Check Parallel Board alarm.
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The BladeUPS parallel system can assign identities to each UPS in the system automatically. To take advantage
of this feature, wire the CAN Bridge Cards together as described in .
When starting up, the UPS with the blue terminating plug installed in the CAN IN port identifies itself as UNIT 1.
The next UPS wired identifies itself as UNIT 2, and so forth. The last UPS with the second blue terminating plug
installed in the CAN OUT port terminates the RJ-14 cable network. The auto-identification sequence takes
about 1–2 minutes to complete once all the UPSs in the parallel system have logic power.
If a UPS is shut down or otherwise loses logic power, the UPS will re-identify itself in the proper sequence
once logic power is restored.
If a UPS is shut down and removed from the parallel system, the other UPSs in the system will not re-identify
themselves to compensate for the missing UPS until logic power to all the UPSs is cycled. For example, if you
remove UNIT 2 and rewire UNIT 3’s CAN IN port to UNIT 1’s CAN OUT port, UNIT 3 will not re-identify itself as
UNIT 2 until logic power is cycled. The CAN Bridge Cards for UNIT 1 and UNIT 3 continue to function normally
without the need to re-identify.
Parallel Communication