Calibration
Each drive is factory calibrated to its maximum horsepower rating. Readjust the calibration
trimpot settings to accommodate lower horsepower motors.
All adjustments increase with CW rotation, and decrease with CCW rotation. Use a non-me-
tallic screwdriver for calibration. Each trimpot is identified on the printed circuit board.
MAX SPD
The MAX SPD setting determines the motor speed when the speed adjust potentiometer is
turned full CW. It is factory set for maximum rated speed.
To calibrate, set the MAX SPD trimpot full CCW. Turn the speed adjust potentiometer full
CW. Adjust the MAX SPD trimpot until the desired maximum motor speed is reached.
ACCEL/DECEL
The ACCEL/DECEL setting determines the time the motor takes to ramp to a higher (or
lower) speed. See
Specifications
on page 1 for approximate acceleration times. The
ACCEL/DECEL setting is factory set to its minimum value (full CCW).
Turn the ACCEL/DECEL trimpot CW to increase the acceleration and deceleration time, and
CCW to decrease the acceleration and deceleration time.
IR COMP
The IR COMP setting determines the degree to which motor speed is held constant as the
motor load changes. It is factory set for optimum motor regulation.
Recalibrate the IR COMP setting when using a lower horsepower motor. Refer to the recom-
mended IR COMP settings on page 14, or recalibrate using the following procedure:
If the motor does not maintain set speed as the load changes, gradually rotate the IR
COMP trimpot CW. If the motor oscillates (overcompensation), the IR COMP trimpot may be
set too high (CW). Turn the IR COMP trimpot CCW to stabilize the drive.
Содержание XP-AC Series
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