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User Manual
Single or '1+N' UPS System
12.2
Interface Alarm Boards
12.2.1
Introduction
Two circuit boards, each offering different features and facilities, are available to provide alarm signalling to
external devices:
♦
I\O AS400 Alarm Interface Board (4590055P).
♦
Extension Alarm Interface Board (4590056Q).
All alarms are generated via software routines on the UPS Logic Board and output from the micro data bus via a series
of controlled output buffers. The signals then pass via a piggy-back connection through the Alarm Interface Board
(4590055P) to the Remote Alarm Interface Board (4500056Q) where they energise appropriate relay coils via
switching transistors.
The AS400 Alarm Board (4590055P) is mounted on the internal metal panel shown in Chapter 6 and connected to
ribbon cable (W10 on all models). The Extension Alarm Board (P\N 4500056Q) is also fitted.
As compared to previous models, the two alarm interface boards feature new alarms and additional functions
(Field defined alarms). Verify that the UPS is using software version 15 or above (by selecting Info window on the
display of the operator's panel).
12.2.2
Board Installation – 4590055P
1. Before installing the AS400 Alarm Interface Board in the UPS, it is necessary to power down that unit. To
maintain continuity of supply, the load should first be transferred to the maintenance bypass circuit following the
procedure given in Chapter 9.
2. Mount the AS400 Alarm Interface Board on the plastic stand-offs that are already mounted on the internal metal
panel inside the UPS at the location identified in the figures of Chapter 6.
3. Turn the plastic screwhead of the plastic standoffs in a clockwise direction.
4. Connect the ribbon cable (W10) to connector X1 on the AS400 Alarm Interface Board (4590055P).
5. Connect the external signal cables, as required, to the terminal block connectors identified in the appropriate
sections of this user manual.
Note: The cross-sectional area of the signal wires may be 0.1 to 1.5mm
voltage of the remote monitoring interface device and the length of the cable route. Inside the UPS the signal cables
should be bundled together and tied to the metal frame.
6. Return the UPS to Normal Operation, following the procedure given in the Chapter 9.
12.2.3
Board Installation – 4590056Q
1. Using the connector X1, mount the Extension Alarm Interface Board (4590056Q) in piggy-back fashion on to
connector X2 of the AS400 Alarm Interface Board (4590055P.)
2. Connect the external signal cables, as required, to the terminal block connectors identified in the appropriate
sections of this user manual.
Liebert Hipulse E
Note
Figure 12-1 – UPS Interface Alarm Boards details
2
and should take into account the working
(07/04)
Chapter 12 – Additional Equipment
Page 12-3
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