Lenovo 5594-8KX User, Installation And Maintenance Manual

Also see for 55948KX: Replacing Product guide

Chapter 9 CommunicationNote: UPS must start with the regular On/Off switch on the front panel during commissioning.On/Off control using the power ( X ) button has priority over the remote control.Then, the ROO fully replaces it, although the On/Off switch will always have priority over theremote controlRemote Power OffRemote Power Off (RPO) is used to disable the UPS remotely. This feature can be used forunpowering the load and shutting down the UPS by an external event, for example when theroom temperature is too high. When RPO is activated, the UPS disables the output and all itspower converters immediately. The UPS remains on, to alarm the fault.Important: The RPO circuit is an IEC 60950 safety extra low voltage (SELV) circuit. This circuitmust be separated from any hazardous voltage circuits.Important notes: • The RPOmust not be connected to any utility-connected circuits. The RPOswitchmust have a minimum rating of 27 VDC and 20 mA and be a dedicatedlatching-type switch not tied into any other circuit. The RPO signal must remainactive for at least 250 ms for proper operation.• To ensure the UPS stops supplying power to the load during any mode ofoperation, the input powermust be disconnected from the UPS when theRemote Power Off function is activated.Note: Leave the RPO jumper wire installed in the RPO port on the UPS if the RPO function is notneeded.RPO connectionsTerminal wire size rating is 0.32-4 mm2 (22-12 AWG).112 6U Rack or Tower UPS RT8kVA and RT11kVA IUOMG