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614-20306-00 - 9SX 0-6 KVA EMEA_EN
4.6 UPS remote control functions
Programmable Signal Inputs
The 9SX incorporates 2 programmable signal inputs: one RPO terminal input, one RS-232 input (pin-4). Signal
inputs can be con
fi
gured (see Settings > Com settings > Signal Input on page
33) to have one of the following
functions:
Function
Description
No
No function, please choose a function if you want to use input signal
RPO
Remote Power off (RPO) is used to shutdown the UPS remotely
ROO
Remote On/Off allows remote action of button to switch On/Off the UPS.
(Cold start is prohibited while using the ROO function)
Forced bypass If feeding the load the unit goes to bypass operation and stays there regardless of the
bypass state until the input is inactivated
Building
alarm
Active input generates an alarm “building alarm”
On generator
Active input disables synchronization and transfers to bypass
Remote
shutdown
Active input turns UPS output (or outlet groups) off after a user de
fi
ned shutdown
delay but keeps on charging batteries according to a selected charging scheme,
inactive input does not abort shutdown countdown. Depending on the “Restart”
parameter (see Settings > Com Settings > Shutdown commands on page 34) the unit
may startup automatically.
Warning Signal inputs have no function by default please choose a function through the LCD
(Settings > Com settings > Input signals on page 33).
See below example of con
fi
guration with RPO terminal used as RPO function:
• Remote Power Off (RPO)
RPO is used to shutdown the UPS remotely when the contact is open. This feature can be used for shutting
down the load and the UPS by thermal relay, for instance in the event of room over temperature. 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 not be connected to any utility connected circuits. Reinforced insulation to the utility is
required. The RPO switch must 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.
Leave the RPO connector installed in the RPO port on the UPS even if the RPO function is not needed.
RPO connections:
RPO
Comments
Connector type
Terminal, 14 AWG Maximum wires
External breaker speci
fi
cation
60 V DC/30 V AC 20 mA max
4. Interfaces and Communication
