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MITSUBISHI
ELECTRIC
2.4 EXTERNAL SIGNAL TERMINAL BLOCK
The UPS is equipped with a series of input/output terminals for external annunciation of
alarms and for remote access of certain UPS functions. The layout of terminals is shown in
FIGURE 2.10 with a functional description of the input/output port presented. OUT1 to
OUT8 are user programmable, but are factory default set being also shown in FIGURE
2.10.
Adding same external I/F PCB "IOAU-09", doubling signal outputs is applicable for OUT1
to OUT8.
FIGURE 2.10-a External Signal Terminal Block (NEC Class2)
TN2
2
4
6
8
10
12
14
16
18
20
UPS
M9950 SERIES UPS
OWNERS / TECHNICAL MANUAL
1
3
5
7
9
11
13
15
17
19
*1
MITSUBISHI ELECTRIC M9950 SERIES UPS
SUMMARY ALARM（Triggers on fault
alarm only）
OUT1: LOAD ON BYPASS
OUT2: LOAD ON INVERTER
OUT3: BATTERY OPERATION
OUT4: CONVERTEN OPERATION
OUT5: BATTERY LOW VOLTAGE
OUT6: OVERLOAD
OUT7: SPARE
OUT8: TOTAL ALARM（Triggers on fault
alarm only）
52C CLOSE
*1 Relay contactor (52C close): Normal Closed
Page Number:
2-10
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