Emerson Liebert APM 90 - 3.2 Wiring Of Signal Cable

Chapter 3 Electrical Installation 21
Liebert APM 90 Integrated Modular UPS User Manual
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A
A
B
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Output terminal
A Amplified view
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Figure 3-5 Output terminals of UPS with output distribution module (front view)
Warning
If the load equipment will not be ready to accept power on the arrival of the commissioning engineer, ensure that the
system output cables are safely isolated at their ends.
7. Replace the protective cover.
3.2 Wiring Of Signal Cable
3.2.1 Overview
As shown in Figure 3-6, the bypass module provides dry contact ports (J5 ~ J10) and communication ports
(RS485 port, RS232 port and Intellislot port) on the front panel.
Intellislot 1
Intellislot 3
Intellislot 2
J8
J5
J9
J10
J6
J7
RS232
J
8
J
5
RS232
J9
J10
J6
J7
Intellislot 1
Intellislot 2
Intellislot 3
Figure 3-6 Dry contact ports and communication ports
The UPS accepts voltage-free (dry) contact signals from external input dry contact terminals through the
phoenix terminals on the bypass module. Subject to prior software programming, the signals are accepted by
the UPS when relevant terminals and the +12V terminals are shorted. All control cables must be routed
separately from the power cables and parallel cables, and must be double insulated. For maximum run
between 20m and 30m, the typical CSA should be from 0.5mm
2
to 1.5mm
2
.