Vertiv Liebert ITA2, User Manual

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The 1/0 dry contact port capacity. 125Vdc, 0.5A; 30Vdc, 7A
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 Pin 10.
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 from mains input. 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
helps the switch to trip and thus cuts 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.
REPO switc
Figure 6-
5
The cable connection procedures are as follows:
REPO cable connection
l Loosen the '11' and '12' connection terminals of the REPO port
;,:;
[T]
-0
0
REPO plug
9
10
Jl
12
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 connection 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 parallelly 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 generates 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 0.82mm
2
~ 0.33mm
1
(signal cable of 18A WG ~ 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 I Liebert� ITA2 ., 5kVA ~ 20kVA UPS I User Manual
·102