86
TROUBLESHOOTING
DRIVE FAULT / ENCODER FLT
The most common fault at startup with drive startup is the
Encoder 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 the wires on A with A/ or swap A & A/ with B & B/.
d. Perform the “Encoder Synchronization” process after
swapping any encoder wires.
BRAKE NOT LIFTING
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.
Verify the brakes are lifting fully.
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