COMMUNICATIONEATON BladeUPS® (12 kVA) User's Guide 164201649 Rev 4www.eaton.com/powerquality88If a UPS is shut down and removed from the parallel system, the other UPSs in thesystem will not re-identify themselves to compensate for the missing UPS until logicpower to all the UPSs is cycled. For example, if you remove UNIT 2 and rewireUNIT 3's CAN IN port to UNIT 1's CAN OUT port, UNIT 3 will not re-identify itself asUNIT 2 until logic power is cycled. The CAN Bridge Cards for UNIT 1 and UNIT 3continue to function normally without the need to re-identify.MeteringThe Output and Load Receptacle meter readings differ between a parallel system anda standalone UPS. In a parallel system, one UPS reads the Load Receptacle value forthe total system (the others read zero), but each UPS displays its own Output value.For example, in a two-unit parallel system with one Anderson load connection for12 kVA, the Load Receptacle current would read 12 kVA on one UPS and zero on theother UPS, but the Output measurement would be 6 kVA on each UPS (half the total).In a standalone UPS, the load can be connected from the outlet cord or the Andersonload connector. The Output measurement would be the total load on the UPS, andthe Load Receptacle reading would be the portion supplied by the Anderson loadconnector.
