
Manual 26659
ProAct P-Series FL Position Controller
Woodward
29
All Demands Failed
—Indicates both the primary and backup (if used) demands
are failed (out of range).
Use Primary
Demand
Use Backup
Demand
Demand
Failed
(Primary Demand Fault AND Backup Demand OK)
(Backup Demand Fault AND Primary Demand OK)
OR
(Primary Demand OK for > 10 sec
AND Tracking OK)
Primary Demand OK
AND
Reset*
Backup Demand Fault
AND
Primary Demand Fault
Backup Demand OK
AND
Primary Demand Fault
AND Reset*
*Reset not required if configured as
non-latching
Primary Demand Fault
AND
Backup Demand Fault
Init
Figure 3-3. Position Demand Logic
Status (Discrete) Output
A discrete output is provided to serve as a status indicator. This output can be
configured to be either normally on/open (preferred failsafe setting) or normally
off/closed. In addition, the faults that drive the relay status can be configured
individually. For details refer to Chapter 4 (Service Tool).
Run Enable Discrete Input
An optional Run Enable discrete input can be configured for use. The Run
Enable operation provides a closed-to-run and an open to force the shaft
controller into a low-current “limp” mode. The Run Enable can also be used to
clear a latching shutdown condition since a closure of the input will issue a reset
command.
Analog Output
The analog output provides a (4 to 20) mA or (0 to 5) V (dc) signal representing
either actual shaft rotational position or position setpoint. The output is 4 mA at
0 % and 20 mA at 100 % by default, but is user-configurable. The voltage output
is 0.5 V (dc) at 0 % and 4.5 V (dc) at 100 % by default, but is user-configurable.