Tripp Lite 9PX11K Eaton 9PX 8000 9PX 11000 9PX EBM 240V Installation and User - Page 32

6. Communication • Remote On/Off Remote On/Off allows remote action of button to switch On/Off the UPS. Normally open When contact changes from open to closed, the UPS is switched-on (or stays On). When contact changes from closed to open, the UPS is switched-off (or stays Off). On/Off control via button has priority over the remote control. • Remote Power Off RPO is used to shutdown the UPS remotely. This feature can be used for shutting down the load and the UPS by thermal relay, for instance in the event of room over temperature. When RPO is activated, the UPS shuts down the output and all its power converters immediately. The UPS remains on to alarm the fault. The RPO circuit is an IEC 60950 safety extra low voltage (SELV) circuit. This circuit must be separated from any hazardous voltage circuits by reinforced insulation. • The RPO must not be connected to any utility connected circuits. Reinforced insulation to the utility is required. The RPO switch must have a minimum rating of 27 Vdc and 20 mA and be a dedicated latching-type switch not tied into any other circuit.The RPO signal must remain active for at least 250 ms for proper operation. • To ensure the UPS stops supplying power to the load during any mode of operation, the input power must be disconnected from the UPS when the Remote Power Off function is activated. Leave the RPO connector installed in the RPO port on the UPS even if the RPO function is not needed. RPO connections: Internal power supply External power supply Page 32 13 Normally closed 13 Normally open 13 Normally closed Terminal wire size rating is 0.32-4 mm2 (22-12 AWG). Suggested wire size is 0.82 mm2 (18 AWG). 13 Normally open 8-11kVA US_EN