63
TROUBLESHOOTING
DRIVE FAULT / ENCODER FLT
The most common fault at startup with a Magnetek drive is the
Encoder fault. Perform the following checks to correct this fault:
a. Check for a solid shield-to-ground connection at the motor
and drive.
b. Check for correct colored encoder wires to the terminals.
c. Swap A+ / A- on terminal TB2 – #1 (A+) and #2 (A-).
i. After swapping the “A” signal wires it may be necessary
to change the direction of the “C1 – Encoder Connect”.
BRAKE NOT LIFTING
1. If the brake is not picking make sure that it is wired according to
Sheet 5 – Brakes, the EB terminal has power and then check the
following:
a. During a run command, check for DC voltage between points
K1 / K2 and J1 / J2 (if 2
nd
brake installed). Verify the voltages
are also at the Brake Coil(s) when commanded to pick.
b. Verify that the voltages match the Brake Coil voltages shown
on “Sheet 1: Getting Started” table.
WRONG DIRECTION
If the car is moving in the wrong direction:
a. On the Smartrise controller board make sure that IO 521
comes on when commanding the UP direction and IO 522
comes on when commanding the DOWN direction.
b. Swap two of the motor leads (T1 with T2).
CAR MOVING TOO SLOW OR ROUGH
Swap the encoder wires A+ and A- on drive TB2 (terminals 1 & 2).
Verify the brakes are lifting fully.
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