Vertiv EXM 0080kTK16FN01000, User Manual

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34 Chapter 3 Electrical Installation
Liebert EXM 80kVA ~ 200kVA UPS User Manual
1 2 3 4
J2
Figure 3-11 REPO port J2
Table 3-8 Description of REPO port J2
Pin Name Meanings Pin Name Meanings
1 EPO-NC
EPO activated when
opened to Pin 2
3 + 12V
EPO activated when
shorted to Pin 4
2 + 12V
EPO activated when
opened to Pin 1
4 EPO-NO
EPO activated when
shorted to Pin 3
EPO is triggered when pins 3 and 4 of J3 are shorted or pins 2 and 1 of J2 are opened.
If an external EPO facility is required, pins 1 and 2 or 3 and 4 of J2 are reserved for this function. The
external EPO facility is also connected to the normally open or normally closed remote EPO switch
between these two terminals using shielded cable. If this function is not required, pins 3 and 4 of J2 must
be opened and pins 1 and 2 of J3 must be shorted.
Note
The UPS EPO action shuts down the rectifier, inverter and static bypass, but it does not internally disconnect the
mains input power. To disconnect all power to the UPS, open the external power switch, bypass input switch, output
switch and BCB after EPO is activated.
3.2.7 RS232 Communication Port
See Figure 3-12 for the diagram of RS232 communication port.
2
3
5
RXD
TXD
GND
J1
RXD
TXD
GND
2
3
5
J1
Figure 3-12 RS232 communication port
This port monitors and sets parameters through connecting with computer.
The RS232 communication port provides serial data and is intended for use by authorized commissioning
and service personnel in UPS commissioning and service.
3.2.8 Parallel And LBS Communication Ports
See Figure 3-6 for their positions.