1 of 15INTERFACE WIRING INSTALLATIONNOTES AND TERMINAL LOCATIONS032406BDESCRIPTION:DATE:DRAWING NO: SHEET:REVISION:164201604-8INSTALLATION INFORMATIONEaton 9390 UPS (100–160 kVA) Installation and Operation Manual 164201604 Rev E www.eaton.com/powerquality A-331. Use Class 1 wiring methods (as defined by the NEC) for interface wiring up to 30V. Thewire should be rated at 24V, 1A minimum.2. Use Class 2 wiring methods (as defined by the NEC) for interface wiring from 30 to 600V.3. When installing external interface wiring (for example, building alarm, relay output, batterybreaker trip, and X-Slot) to the UPS interface terminals, conduit must be installedbetween each device and the UPS cabinet. Install the interface wiring in separate conduitfrom the power wiring.4. When installing internal interface wiring to X-Slot terminals, route the wiring through theinternal opening in the X-Slot communication bay.5. All building alarm inputs require an isolated normally‐open contact or switch (rated at24 Vdc, 20 mA minimum) connected between the alarm input and common terminalas shown. Building alarm inputs can be programmed for use with either normally–open ornormally–closed contacts. All control wiring and relay and switch contacts arecustomer‐supplied. Use twisted‐pair wires for each alarm input and common.6. The building alarms can be programmed to display the alarm functional name.7. See Table R through Table X and Chapters 4, 5, and 6 for customer interface wiring.8. LAN and telephone drops for use with X-Slot connectivity cards must be provided byfacility planners or the customer.Table R. TB1 and TB2 Interface ConnectionsTerminal TB1 Name Description1 Remote EPO NC Normally‐closed dry contacts used to activate EPOof UPS from a remote switch2 Remote EPO Common3 Remote EPO NO Normally‐open dry contacts used to activate EPO ofUPS from a remote switch4 Remote EPO Common5 Battery Breaker Aux Contacts used to indicate whether UPS batterybreaker or disconnect is open or closed.6 Battery Breaker AuxReturn7 Battery UVR (+) Contacts used to open battery breaker ordisconnect.8 Battery UVR (-)9 Building Alarm 1 Programmable UPS alarm. Activated by a remotedry contact closure.10 Building Alarm 1 ReturnTerminal TB2 Name Description1 Building Alarm 2 Programmable UPS alarm. Activated by a remotedry contact closure. Also used for backup control(pull chain) for parallel operation.2 Building Alarm 2 Return3 On Bypass Return Normally‐open contact closes when UPS is onbypass. Also used for backup control (pull chain)for parallel operation.4 On Bypass NO5 Alarm Relay NC General purpose normally‐closed relay contact.6 Alarm Relay Common7 Alarm Relay NO General purpose normally‐open relay contact.8 Alarm Relay Common9 On Inverter NC Normally‐closed contact opens when outputcontactor closes.10 On Inverter Return
