__________________________________________________________________CHEMLINE
Calibration & Adjustment Instructions A- & Q- Series Actuator w/Digital Positioner
Auxiliary Position Out Cal:
Note that the AUX POSITION OUT CAL indicator also serves as a FAULT indicator. When the indicator is on
steady, the AUX POSITION OUT CAL function is selected. When the indicator flashes, a FAULT condition
has been detected (see FAULT INDICATOR for details). The AUX POSITION OUT CAL function is used to
calibrate an optional feedback transmitter output. An appropriate transmitter option module is required to use
this feature.
When the AUX POSITION OUT CAL function is first selected (by pressing the MODE button while in the
LOSS OF COMMAND function), the CLOSE indicator will flash, and the voltage or current associated with
the closed position will appear at the option module output. If desired, the output can be adjusted (using the ▲
and ▼buttons) to any value from 0 to 10 VDC (for a voltage output) or 0 to 20 mA (for a current output). The
new setting is then associated with the closed position.
Pressing the MODE button again will leave the unit in the AUX POSITION OUT CAL function except that the
OPEN indicator will flash, and the output voltage or current associated with the open position will appear at the
option module output. Like the closed setting, the output can be adjusted to any voltage (from 0 to 0 VDC) or
current (from 0 to 20 mA), and the new setting is then associated with the open position.
Fault Indicator:
The positioner detects various fault conditions that prohibit the unit from controlling the actuator. When any of
these conditions are detected, the FAULT indicator will flash, and the motor outputs are turned off until all fault
conditions have been corrected. If an appropriate relay option module is installed, the FAULT relay output on
the option module will also turn off. A communications option module can read the specific condition(s)
causing the fault. Note that a fault condition DOES NOT disable the motor outputs when manually controlling
the actuator with the ▲and ▼buttons; while useful for troubleshooting, care should be exercised when
operating the motor under a fault condition. The OVERRIDE mode can also operate the motor when a fault
condition exists – see OVERRIDE MODE for details. The various fault conditions are described below.
LOSS OF COMMAND – If the command signal is disconnected or out of range, the fault indicator will remain
on until the signal is reconnected or back in range.
FEEDBACK POT FAULT – A fault condition is detected whenever the feedback signal is out of range (that is,
less than 5%, or more than 95%, of the potentiometer value), or when any of the potentiometer connections are
broken. Normal operation resumes when the potentiometer is reconnected or back in range.
MOTOR 1 STALL – A fault condition is detected when no actuator motion is detected while the MOTOR 1
output is turned on. The fault condition will disable the MOTOR 1 output only, and the fault is cleared when the
positioner detects a motion greater than 1.50in either direction. The fault can be cleared if 1) the command
signal commands a MOTOR 2 operation, 2) manual operation with the ▲and ▼buttons results in a motion
greater than 1.50, or 3) mechanical manual override forces the 1.50motion, provided the mechanical motion is
monitored by the feedback potentiometer.
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