Eaton 9PXM User Manual

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24 4–20kVA Users Guide P-164000669 4–20kVA Users Guide P-164000669—Rev 0933..44 BBPPMM SSiiggnnaall IInnppuutt WWiirree RRoouuttiinnggCAUTIONThe auxiliary contacts must be wired to the BPM from the UPS for proper functionality. These auxiliary contactssignal the UPS to go to Internal Bypass mode to provide a synchronized transfer. Failure to wire the auxiliarycontacts can be dangerous and result in system failure.1. Route the maintenance bypass signal wires in a conduit from the bypass module to the communicationsignal terminal (CN13) on the rear of the UPS ( See Figure 20 ). For conduit requirements consult your localelectrical code.2. Place the signal wires through the proper conduit or grommet to the terminal block in the BPM.Figure 20. UPS Input Control Signal Wiring for Maintenance BypassAUX NOCONTACTNOCONTACTON UPS(white wire)BYPASSNEUTRAL(black wire)FORCEDBYPASS IN(red wire)External CAN to EBM(CN4)Maintenance Bypass(CN13)EPO(CN7)3 2 14 3 2 1 4 3 2 1 4 3 2 1 7 6 5 4 3 2 1Input signalwiresROO and On Generator(CN6)Building Input(CN5)Bypass ModuleTerminalBYPASSNEUTRAL(black wire)FORCEDBYPASS IN(red wire) FORCEDBYPASS IN(red wire)BYPASSNEUTRAL(black wire)Attach suppliedwire connectors to input wiresand plug into UPSBPM SignalTerminalsON UPS(white wire)ON UPS(white wire)(Install conduitover signal wires)UPS SignalTerminalsNOTE Do not strain relieve EPO or external bypass wiring with the same cable tie used forGenerator “On” wires.BPM Signal Input Wire Routing