02/02
42
Several items of optional equipment are available for fitting to the
7400-M series UPS for use by the customer as required.
These options are:
• AS400 alarm Interface Board (# 100201120003)
Additional 3xAS400 Interface Board (#100201120008)
• Remote Alarms Interface Board (#100201120007)
• Remote Alarms Monitor (# 690254060700)
• Battery Circuit Breaker Box's
100A - # 270141030400
160A - # 270141060400
• Temperature sensor board (# 100220110002)
• Remote communications kit
4.1 AS400 Alarm Interface Board (# 100201120003)
The Alarm interface board is fitted in the right hand side of the unit,
on the front lower face (see figure 4-3) near the auxiliary terminal
block (X3) and is connected to the UPS control electronics (UPS Logic
board) by a ribbon cable (W 10), which is normally stowed in the
cable loom when not in use, The board has several functions as
described below.
4.1.1 Remote Control Inputs The Interface Board has facilities to accept three remote control
inputs, as shown in figure 4-1. One remote input allows the inverter to
be shut down (transferring the load to the bypass supply). The second
remote input can be configured to reduce the input current limit,
reduce battery current limit, inhibit inverter synchronization. This
feature is most often used when the input mains supply fails, and the
UPS is powered from a standby generator, which may not be large
enough to maintain power supplies within the normal parameters.
The third remote input is not used at this time (spare).
The external control signals (12V DC or AC) should be connected to
terminal block X5 as shown in figure 4-1. The voltage applied to these
terminals must be generated by an external power source and not
taken from the UPS internal low voltage supplies.
4.1.2 AS400 Interface The AS400 Interface connects five most operationally critical UPS
alarms to an IBM AS400 computer, which is designed to monitor such
alarms and respond to their appearance.
The alarms in question are:
o Mains failure
o Load on UPS
o Low battery and / or battery circuit breaker open
o Load on mains (bypass)
o Load on maintenance bypass
Connection to the AS400 is provided on the Interface Board via a
terminal block X3. These alarm signals are provided by volt-free relay
contacts, Maximum contact rating is 50 Vcc @ 1 Amp.
Chapter 4 – Optional Equipment
To Next Page
Loading...
Need help?
General