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Chapter 9 Communication
Note: 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 the
remote control
Remote Power Off
Remote Power Off (RPO) is used to disable the UPS remotely. This feature can be used for
unpowering the load and shutting down the UPS by an external event, for example when the
room temperature is too high. When RPO is activated, the UPS disables the output and all its
power 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 circuit
must be separated from any hazardous voltage circuits.
Important notes:
Note: Leave the RPO jumper wire installed in the RPO port on the UPS if the RPO function is not
needed.
RPO connections
Terminal wire size rating is 0.32-4 mm
112
The RPO must not be connected to any utility-connected circuits. The RPO
•
switch must have a minimum rating of 27 V
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.
2
(22-12 AWG).
6U Rack or Tower UPS RT8kVA and RT11kVA IUOMG
and 20 mA and be a dedicated
DC
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