GFK-1504K Chapter 11 Analog Output Modules 11-53
11
IC200ALG331
Analog Output Module, 16 Bit Voltage/Current, 1500VAC Isolation, 4 Channels
Diagnostics
By default, the module is configured for fault reporting. The module reports faults as soon
as they are detected. Once a fault has been reported, the same fault is not reported again
until the fault has been cleared. Fault reporting can be disabled via configuration. If
disabled, faults are not reported. The module can detect and report the following faults:
Over-Range
The module reports an Over Range fault if an output value is greater than approximately
+12.5 volts or 25 mA.
Under-Range
The module reports an Under Range fault if an output value is approximately 0mA on an
current channel or –12.5 volts on a voltage channel.
Open Wire
The module reports an Open Wire fault on current outputs if the configuration of the low
end of the range is greater than or equal to approximately 2.0 mA, but the output is not
detecting current.
Loss of Field Power Supply
The module reports a Loss of Field Power fault if field power is not present (also indicated
by the FLD PWR LED). Outputs default as specified by the configuration.
High Limit
The module reports a High Alarm fault if an output value is greater than or equal to the
value specified by the “Alarm High” configuration parameter.
Low Limit
The module reports a Low Alarm fault if an output value is less than or equal to the value
specified by the “Alarm Low” configuration parameter.
Non-volatile Memory Fault
The module reports this fault only during field recalibration, if a non-volatile memory fault
is detected.
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