Lenovo 5594-6KX Installation And User Manual page 53

Important: The RPO circuit is an IEC 60950 safety extra low voltage (SELV) circuit.
This circuit must be separated from any hazardous voltage circuits.
Note: Important notes:
v The RPO must not be connected to any utility-connected circuits. 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.
v 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.
Note: Leave the RPO jumper wire installed in the RPO port on the UPS if the RPO
function is not needed.
RPO connections:
Normally closed
Terminal wire size rating is 0.32-4 mm
Remote control connection and test
1. Ensure that the UPS is shut down and the utility power is disconnected.
2. Remove the RPO connector from the UPS by loosening the screws.
3. Connect a normally closed volt-free contact between pins 1 and 3 of the
connector.
Normally closed
4. Plug the RPO connector into the back of the UPS and fix the screws.
5. Connect and restart the UPS.
6. Open the external remote shut down contact to test the function.
2
(22-12 AWG).
Contact open: shut down of UPS
To return to normal operation, close the external remote shut
down contact and restart the UPS from the front panel.
Normally open
Chapter 6. Communication
35