Terminal Symbol Name Type
3 Normally open
Relay output (30 V DC and 1 A)
4 Common
5 Normally open
6 Common
7 Normally open
8 Common
Table 13.14 PSM3.2 Internal communication connections
Connection Symbol Name Type
Bottom of rack, front
Internal communication input connection to connect to the main
controller.
Internal communication input
Bottom of rack, back
Internal communication output connection to connect to the
main controller.
Internal communication output
INFO
Internal communication connections must only be used for internal communication.
13.4.3 Frame ground characteristics
More information
See Hardware characteristics and configuration, General characteristics, Frame ground characteristics.
13.4.4 Power supply characteristics
More information
See Hardware characteristics and configuration, General characteristics, Power supply characteristics.
13.4.5 PSM3.2 1 supply voltage low alarm
This default alarm is for power supply voltage protection.
The alarm is based on the power supply voltage measured by the PSM. The alarm is activated
when the power supply voltage is less than the set point for the delay time.
Configure the parameters under Configure > Parameters > Hardware > PSM3.2 1 > Low voltage alarm .
Table 13.15
Default parameters
Parameter Range PSM3.2 1 supply voltage low
Set point 8.0 to 32.0 V DC 18.0 V DC
Delay 0 s to 1 h 1.0 s
Enable Not enabled, Enabled Enabled
Alarm action Warning
DESIGNER'S HANDBOOK 4189340911K UK Page 429 of 521
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