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ProAct P-Series FL Position Controller
Manual 26659
32
Woodward
Faults
This section identifies the diagnostic faults detected in this product. Each of these
faults can be configured to activate the discrete output. In addition, many of them
can be configured to be alarm or shut down conditions. If configured as an alarm,
the actuator will log the condition and attempt to continue normal operation. If
configured as an shutdown, it will follow the shutdown action which can be set to
go to min (0 %), go to max (100 %), or go limp (zero drive current).
Some faults are dedicated shutdowns and cannot be configured or have
dedicated actions—they are identified below. Faults with special actions, like go
limp, will have priority.
Selection of either Alarm or Shutdown is recommended for each
individual fault below (as opposed to Off). An alarm selection will
provide a historical event occurrence information and a shutdown
selection would also enforce a shutdown action (min/max/limp).
Supply Voltage Fail
This diagnostic indicates an out-of-range signal on the input power. It could
indicate that the input power is out of range or there is a fault in the supply
voltage sense circuitry. The input supply voltage went above 33 V (dc) or below
17 V (dc) for longer than the allowed low voltage time. There is a delay time
provided to ensure that the actuator does not flag a supply voltage low error
during the standard engine start cycle.
Trip levels: >33 V (dc) for 500 ms; <9 V for 500 ms, and <17 V for 70 seconds
Configuration options: Off, Alarm, Shutdown
If configured as an alarm, the actuator will internally default to an assumed
32 V (dc) power supply voltage (decreased torque at lower actual voltages) and
attempt to continue normal operation if this fault is detected. The value displayed
on the Service Tool will show the sensed value, not default.
Temperature Sensor Failed
This diagnostic indicates a failure of the internal on-board Temperature Sensor.
Failure levels: >140 °C and <–45 °C
Persistence: 100 ms
Configuration options: Off, Alarm, Shutdown
If configured as an alarm, the actuator will attempt to continue normal operation
with a default value of 20 °C used internally.
Temperature > 100 ºC (derated)
If the on-board temperature sensor reads above 100 °C this diagnostic will be
set, which is the temperature where current limiting begins. This diagnostic, when
used, provides an indication of this event occurrence.
Failure levels: >100 °C
Persistence: 100 ms
Configuration options: Off, Alarm, Shutdown
Содержание ProAct P Series FL
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