
Page 4
UNIT OPERATION
The BRAKE-PAK ON-OFF control switch is located on the right side of the enclosure. Set the
switch to the “ON” (closed) position to start the machine. Set the switch to the “OFF” (open)
position to initiate the automatic brake cycle. Closing the switch while an automatic brake
cycle is in progress will terminate the brake and start the machine. Note: Once the BRAKE-
PAK is installed, the existing machine operating switch must be placed and remain in the
“ON” position in order for the BRAKE-PAK to control the motor.
ANTI-RESTART FEATURE
If input power to the BRAKE-PAK is interrupted for more than a few seconds while the
BRAKE-PAK is “ON”, it should not re-start when input power is restored. Green LED D7 will
blink to indicate this condition. Turn the BRAKE-PAK switch “OFF” and “ON” again to start
normally.
ADJUSTMENTS
Controls for setting the braking TORQUE and braking TIME (duration of automatic braking
cycle) are clearly marked on the top of the circuit board.
BRAKE-PAK units are shipped with the TIME and TORQUE controls set for minimum (CCW).
To adjust for your application:
1. Advance the TIME control to mid range.
2. Make sure the BRAKE-PAK control switch is in the “OFF” position.
3. Apply power to the BRAKE-PAK.
4. Turn you machine power switch to the “ON” position.
5. Turn the BRAKE-PAK switch “ON” to start the machine. Allow the machine to come to full
speed, and then turn the BRAKE-PAK switch “OFF”.
6. Increase the TORQUE setting in increments of 1/8 turn.
7. Repeat steps 5 and 6 as needed to obtain satisfactory braking.
8. Adjust the TIME control so that the TORQUE is applied for slightly longer than it takes the
machine to reach a full stop. (When cold, a machine will stop slightly faster than when it is
hot).