23
ALARM Connector (9-pin D-sub, female)
Alarm 1 Out:
Under normal operation:
Pins 1 and 6 are open.
In a malfunction or power-off state:
Pins 1 and 6 are closed.
Alarm 2 Out:
Under normal operation:
Pins 2 and 7 are open.
In a malfunction or power-off state:
Pins 2 and 7 are closed.
Reset:
To reset the unit externally, short Pin 5 and a signal ground pin (8 or 9).
ALARM Connector Pin Assignments
Pin No.
Signal Name
Description
1
ALARM 1 OUT
Alarm 1 output (Default setting: Fan)
2
ALARM 2 OUT
Alarm 2 output (Default setting: Power)
3
NC
Unused
4
NC
Unused
5
RESET IN
Reset in, active low
6
ALARM 1 COMMON
Alarm 1 output, common
7
ALARM 2 COMMON
Alarm 2 output, common
8
GND
Signal ground
9
GND
Signal ground
The following items can be set for ALARM1 OUT and ALARM2 OUT. The alarms can be
assigned in the Web-Based Control.
Available alarm signals
Fan (including power unit cooling fans)
Power
Secondary CPU error
CPU Changeover (issued when the secondary CPU is activated to change over the
operation)
Crosspoint Error
9-pin D-sub, female
