Liebert S600 User Manual page 72

The I/O dry contact port capacity: 125Vdc, 0.5A; 30Vdc, 1A. Pin11 and Pin12 reserves the corresponding
terminals for configuring the REPO function. The REPO device also needs the shielded cable to connect to the
Normally Open remote REPO switch between the two terminals. If not necessary, you should disconnect Pin9 and
Pin10. Pin9 and Pin10 have been shorted before delivery.
The EPO action of the UPS will close the rectifier, inverter and static bypass, but it cannot disconnect the UPS mains
input inside. If you want to disconnect the UPS completely, just disconnect the upstream input MCB when generating
the EPO.
In emergency conditions, close the REPO switch (prepared by users) to shut down the rectifier and inverter, and the
UPS is powered off. In normal condition, the REPO switch cannot cut off the UPS input power. If a switch of
electronic control tripping function is adopted at the UPS input, the REPO switch can help the switch trip and thus cut
off the UPS input power. The position of the REPO switch is shown in Figure 1-3, and the REPO cable connection is
shown in Figure 6-3.
The cable connection procedures are as follows:
1. Loosen the '11' and '12' connection terminals of the REPO port.
2. Insert the two ends of the copper core cables with the insulation leather peeled into the '11' and '12' connection
terminals of the REPO port and press down the terminals. The REPO cable is complete. Ensure that the REPO cable is
firmly connected to avoid no action or wrong action of the REPO caused by accidental dropping or infirm contact.
3. For parallel UPSs, when connecting the REPO cable, users should parallel connect '11' of the REPO port with one
end of the electronic switch, and parallel connect '12' with the other end of the electronic switch.
When the REPO switch at the user end closes, the UPS will generate an alarm and cut off the output immediately, and
the UPS will not return to the normal operation state automatically. At this point, you must change the REPO switch
state, and power on the UPS manually.
1. It is recommended to use 0.82mm2 ~ 0.33mm2 (signal cable of 18AWG ~ 33AWG) copper core cable.
2. If the switch you have configured is of electronic control tripping function, when the REPO signal takes action, you
need to close the switch before restart the UPS.
Vertiv|Liebert® S600 10kVA ~ 20kVA UPS | User Manual
Figure 6-3
Repo cable connection
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