MAXIMUM SPEED (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. Set the
speed adjust potentiometer or reference voltage to maximum.
Adjust the MAX SPD trimpot until the desired maximum
motor speed is reached.
ACCELERATION (ACCEL)
The ACCEL setting determines the time the motor takes
to ramp to a higher speed. See Specifications on page 1 for
approximate acceleration times. ACCEL is factory set for the
fastest acceleration time (full CCW).
To set the acceleration time:
1. Set the speed adjust potentiometer or reference signal to
minimum. The motor should run at minimum speed.
2. Set the speed adjust potentiometer or reference signal to
maximum and measure the time it takes the motor to go
from minimum to maximum speed.
3. If the time measured in step 2 is not the desired
acceleration time, turn the ACCEL trimpot CW for a
slower acceleration time, or CCW for a faster acceleration
time. Repeat steps 1 through 3 until the acceleration time
is correct.
23
Calibration
250-0089r3_readers_spreads.qxd 7/3/01 10:48 AM Page 23