Pin
Description
4
Not on battery
5
User common
6
On bypass
7
Low battery
8
Load protected
9
On battery
n.o.
Contact normally open
n.o.
Contact normally closed
ROO
ROO allows remote action of the power button to switch the UPS on and off.
• When the contact changes from open to closed, the UPS is switched-on (or stays On).
• When the contact changes from closed to open, the UPS is powered off (or stays Off).
Figure 3: This figure displays a normally open contact.
NOTE:
The on/off control using the power button has priority over the remote control.
RPO port
RPO is used to shut down the UPS remotely. This feature is primarily used for remotely powering down
the UPS if there is an emergency. When RPO is activated, the UPS shuts down the output and all its
power converters immediately. The UPS remains on to alarm the fault.
The RPO circuit is an IEC 60950 safety extra low voltage (SELV) circuit. This circuit must be separated
from any hazardous voltage circuits by reinforced insulation. The RPO must also meet the following
requirements:
• The RPO cannot be connected to any utility connected circuits. Reinforced insulation to the utility is
required. 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 that the UPS stops supplying power to the load during any mode of operation, the input
power must be disconnected from the UPS when the RPO function is activated.
10
Component identification
