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Calibration
To calibrate DECEL:
1. Set the speed adjust potentiometer or input signal for maximum speed. The motor
should run at maximum speed.
2. Set the speed adjust potentiometer or input signal for minimum speed and measure
the time it takes the motor to go from maximum to minimum speed.
3. If the time measured in step 2 is not the desired deceleration time, turn the DECEL
trimpot CW for a slower deceleration time, or CCW for a faster deceleration time.
Repeat steps 1 through 3 until the deceleration time is correct.
TACH VOLTS
Calibrate the TACH VOLTS setting only when a tachometer is used. The TACH
VOLTS setting, like the IR COMP setting, determines the degree to which the motor
speed is held constant as the motor load changes.
To calibrate the TACH VOLTS trimpot:
1. Connect the tachometer to T1 and T2. The polarity is (+) for T1 and (–) for T2 when
the motor is running in forward direction.
2. Set switch SW505 to ARM for armature feedback.
3. Set the speed adjust potentiometer or input signal to maximum speed.
4. Measure the armature voltage across A1 and A2 using a voltmeter.
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