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Chapter 9 Communication
Note: Normally closed contact, which stops all power converters in the UPS and the bypass, when it
opens up.
To restart the UPS, the contact must be closed and the power ( X ) button must be pressed.
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.
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.
Note: Always test the RPO function before applying your critical load to avoid accidental load loss.
6U Rack or Tower UPS RT8kVA and RT11kVA IUOMG
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.
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