13.4.6 PSM3.2 1 supply voltage high 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 exceeds the set point for the delay time.
Configure the parameters under Configure > Parameters > Hardware > PSM3.2 1 > High voltage alarm .
Table 13.16
Default parameters
Parameter Range PSM3.2 1 supply voltage high
Set point 12.0 to 36.0 V DC 30.0 V DC
Delay 0 s to 1 h 1.0 s
Enable Not enabled, Enabled Enabled
Alarm action Warning
13.4.7 Power supply voltage as an analogue output
You can configure an analogue output with a function for the power supply voltage. The controller then adjusts the analogue output
to reflect the operating value.
Assign the function to an analogue output under Configure > Input/output. Select a hardware module with an analogue output,
then select the output to configure.
Table 13.17
Power supply voltage function
Function I/O Units Details
Hardware > Power supply > PSM3.2
1 > PSM3.2 1 supply voltage [V DC]
Analogue output 0 to 60 V DC
The controller measures the power supply voltage over
the power supply terminals. The controller uses the
configured curve to convert this value to an analogue
output.
Application
An analogue output with the power supply voltage may be wired to a switchboard instrument to help the operator.
13.4.8 Relay output characteristics
The first relay output (terminals 3,4) on PSM3.2 is reserved for the Status OK function. You cannot change the function for this relay.
The two other relay outputs on PSM3.2 are configurable (that is, terminals 5,6 and terminals 7,8 can be assigned any function).
More information
See Hardware characteristics and configuration, General characteristics, Relay output characteristics and
configuration for more information.
13.4.9 Internal communication
The controllers communicate with their extension units using the Ethernet cables and the internal communication ports (OUT and IN,
marked with a red border on the PSM3.1 and PSM3.2). This is type of communication is referred to as Internal communication.
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