BOOK0795-F
21
SECTION IV
MAINTENANCE AND REPAIR
GENERAL
1. Keep the controller dry and free of dust, dirt, and debris. No parts require periodic replacement.
2. Periodically turn-off the AC line supply to the controller and check all wire terminations to be sure they are
tight.
3. Visually check components for damage due to overheating or breakage. All damaged and/or faulty compo-
nents must be replaced for satisfactory operation.
4. Maintain the motor according to maintenance instructions supplied by the motor manufacturer.
ADJUSTMENT INSTRUCTIONS
ACCELERATION
1. Set the MOTOR SPEED potentiometer at 100% or the external speed reference signal at maximum, as
applicable.
2. Initiate a Run command and observe the time required for the motor to reach maximum speed.
3. Adjust the ACCEL potentiometer for the desired rate. Full clockwise rotation is the fastest acceleration
(0.2 second), and full counterclockwise rotation is the slowest acceleration (30 seconds).
DECELERATION
1. With the motor running at maximum speed, quickly reset the MOTOR SPEED potentiometer to zero, or
quickly decrease the speed reference signal to minimum, as applicable, and observe the time required for
the motor to reach minimum speed.
2. Adjust the DECEL potentiometer for the desired rate. Full clockwise rotation is the fastest deceleration
(0.2 second), and full counterclockwise rotation is the slowest deceleration (30 seconds).
IR COMPENSATION
IR compensation is used only when the controller is programmed for armature feedback. The IR/TACH
potentiometer is factory set at zero (full counterclockwise rotation) for satisfactory operation with most motors. If
improved speed regulation is desired, readjust IR compensation as follows:
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