Copyright 2013 by American Control Electronics
®
- All right reserved. No part of this document may be
reproduced or retransmitted in any form without written permission from American Control Electronics
®
.
The information and technical data in this document are subject to change without notice. American
Control Electronics
®
makes no warranty of any kind with respect to this material, including, but not
limited to, the implied warranties of its merchantability and fitness for a given purpose. American
Control Electronics
®
assumes no responsibility for any errors that may appear in this document
and makes no commitment to update or to keep current the information in this document.
QSG-0081 rev 0
Calibration
Maximum Speed (MAX SPD):
The MAX SPD setting determines the maximum motor speed when the
speed adjust potentiometer is set for maximum speed. To calibrate the MAX SPD:
1. Set the MAX SPD trim pot full CCW.
2. Set the speed adjust potentiometer for maximum speed.
3. Adjust MAX SPD trim pot until the desired maximum speed is reached.
Forward Torque (FWD TQ) and Reverse Torque (REV TQ):
The FWD TQ and REV TQ settings determine
the maximum torque for accelerating and driving the motor in the forward and reverse direction.
To calibrate the FWD TQ:
1. With the power disconnected from the drive, connect a DC ammeter in series with the
1.
armature.
2. Set the FWD TQ trim pot to minimum (full CCW).
3. Set the speed adjust potentiometer to maximum forward speed (full CW).
4. Carefully lock the motor armature. Be sure that the motor is firmly mounted.
5. Apply line power. The motor should be stopped.
6. Slowly adjust the FWD TQ trim pot CW until the armature current is 150% of motor rated
6.
armature current.
7. Turn the speed adjust potentiometer to minimum speed (full CCW).
8. Remove line power.
9. Remove the stall from the motor.
10. Remove the ammeter in series with the motor armature if it is no longer needed.
To calibrate the REV TQ:
1. Follow the steps for calibrating the foward torque using the REV TQ trim pot and with the
1.
motor set to run in the reverse direction.
IR Compensation (IR COMP):
The IR COMP setting determines the degree to which motor speed is
held constant as the motor load changes. To calibrate the IR COMP:
1. Set the IR COMP trim pot full CCW.
2. Increase the speed adjust potentiometer until the motor runs at midspeed without load. A
2.
handheld tachometer may be used to measure motor speed.
3. Load the motor armature to its full load armature current rating. The motor should slow down.
4. While keeping the load on the motor, rotate the IR COMP trim pot until the motor runs at the
4.
speed measured in step 2. If the motor oscillates (overcompensation), the IR COMP trim pot
4.
may be set too high (CW). Turn the IR COMP trim pot CCW to stabilize the motor.
5. Unload the motor.
Deadband (DB):
The deadband trim pot determines the time that will elapse between the application
of current in one direction before current is applied in the opposite direction. The deadband trim pot
affects the resistance that a motor has to changes in shaft position at zero speed. It does this by
applying an AC voltage to the motor armature. Deadband is factory calibrated to approximately the
3 o’clock position for 60 Hz AC line operation. Recalibrate the deadband to the 9 o’clock position for 50
Hz operation. If you hear motor noise (humming), the deadband might be set too high. Turn the
deadband trim pot CCW until the motor noise ceases.
Operation
Unidirectional Forward
FWD
50K OHM
SPEED POT
CW
S3 S2 S1 S0
POTENTIOMETER WIRING
Unidirectional Reverse
Bidirectional
- Verify that no foreign conductive material is present on the printed circuit board.
1. Turn the speed adjust potentiometer full counterclockwise (CCW).
2. Apply AC line voltage.
3. Make sure the drive is enabled.
4. Slowly advance the speed adjust potentiometer clockwise (CW). The motor slowly accelerates as
4.
the potentiometer is turned CW. Continue until the desired speed is reached.
5. Remove AC line voltage from the drive to coast the motor to a stop.
STARTUP
Startup
REV
50K OHM
SPEED POT
CW
S3 S2 S1 S0
REV
50K OHM
SPEED POT
CW
S3 S2 S1 S0
FWD
