EXS
User Manual 10H52260UM60 - Rev. 1 - 10/2017
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Activating the UPS EPO will deactivate the rectifier, inverter and static bypass, but does not disconnect the UPS from the
mains input. If you wish to disconnect the UPS completely, it is also necessary to open the input MCB installed upstream of
the UPS when activating the EPO.
In the event of an emergency, close the REPO switch (supplied and installed by the user) in order to shut down the
rectifier and inverter, and switch the UPS off. Under normal conditions, the REPO switch cannot be used to isolate
the UPS from the mains input power. If an electronically controlled circuit breaker function is installed at the UPS
input, the REPO switch can be used to trip this breaker, thus cutting off the UPS mains input power. The position of
the REPO switch is shown in Figure 3-6, and the REPO cable connection is shown in Figure 3-8.
Figure 3-8 Connecting the REPO cable
The cable connection procedures are as follows:
1. Release the REPO port connection terminals '11' and '12'.
2. Strip the insulation from the ends of the two copper core cables and insert them in the REPO port connection
terminals '11' and '12', and press the terminals down in order to secure the cables. The REPO cable connection
procedure is complete. Ensure that the REPO cable is connected securely in order to ensure that the REPO is not
activated inadvertently as the result of poor contacts.
3. In the case of parallel UPS systems, when connecting the REPO cable, users should connect terminal '11' of the
REPO port in parallel to one terminal of each electronic switch, and terminal '12' of the REPO port in parallel to the
other terminal of each electronic switch.
When the REPO switch at the user end is closed, the UPS will generate an alarm and cut off the output immediately,
and the UPS will not return to the normal operating state automatically. At this point, it is necessary to change the
REPO switch state, and switch the UPS on manually.
Note
1. We recommend using 0.82mm
2
- 0.33mm
2
copper core cable ( 18AWG - 33AWG signal cable).
2. If the REPO has been configured to trip an electronically controlled circuit breaker switch, after the REPO has been
activated it will be necessary to re-arm the switch before restarting the UPS.
RS232 Communication Port
To connect the serial port communication cables, proceed as follows:
Insert one end of the DB) serial port communication cable into the DB9 serial port (see port 3 in Figure 3-6) on the
rear panel of the UPS, and connect the other end to the DB9 port on the computer.
The pin functions of the DB9 port are listed below:
Pin No.
Function
2
Send data
3
Receive data
5
Common terminal
USB Communication Port
The position of the USB port is shown in Figure 3-6.
To connect the UPS communication cables, proceed as follows:
Insert one end of the USB communication cable into the USB port on the UPS, and connect the other end to the USB
port on the computer.
