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Important: The RPO circuit is an IEC 60950 safety extra low voltage (SELV) circuit. This circuit must be
separated from any hazardous voltage circuits.
Notes: Important notes:
• 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.
• 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
Normally open
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.
.
Chapter 6
Communication
33
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