COMMUNICATIONEATON BladeUPS® (12 kVA) User's Guide 164201649 Rev 4www.eaton.com/powerquality 81Control TerminalsConnect the cables to the control terminals with a mating connector. Input and outputterminals have a functional isolation from terminal to terminal. They are connected tothe UPS chassis through individual 1 M resistors.+ Polarity– Polarity21+ Polarity– Polarity212121Signal Input 1 (programmable)Signal Input 2 (programmable)REPO Normally OpenREPO Normally ClosedNormally OpenNormally Closed12Common3Relay OutputUPSConnectors(see Figure 46 onpage 77)+ Polarity– Polarity21 Redundant Signal Wiring(For Parallel Use Only)+ Polarity– Polarity21 Standalone/ParallelFigure 50. External Control Terminal ConnectionsNOTE If using a semiconductor switch type, pay attention to the proper polarity. A relay or othermechanical control is preferred.Relay Output ContactsThe UPS incorporates a programmable relay output with potential free contacts forremote alarm indications (see Figure 46 on page 77). You can obtain an additional fourrelay outputs with the X-Slot compatible Relay Interface Card.W A R N I N GThe relay output contacts must not be connected to any utility connected circuits; the utility requiresreinforced insulation. The relay output contacts have a maximum rating of 30 Vac/1A and 60 Vdc/2A nominalvalues.
