4-24 Description of Diagnostic Letters B..., C..., D... and A... ECODRIVE03 SMT-02VRS
DOK-ECODR3-SMT-02VRS**-WA01-EN-P
D302 Torque/Force too small to move
The command D3 Command adjust commutation has been started. To
perform this, the motor must move. But it doesn’t move.
Cause:
1. The torque is too small to overcome mechanical resistances (friction
or weight).
2. The motor is blocked mechanically.
3. Motor movement and encoder rotation direction are contradictory to
each other.
Remedy:
1. Increase the S-0-0092, Torque/Force limit bipolar so that the motor
overcomes the mechanical resistances and can turn. Check also
P-0-0109, Torque/Force peak limit; this parameter value should be at
least as great as S-0-0092.
2. Clear the jamming. Check also the brake.
3. At the motor connection, switch 2 phases or turn rotational direction of
encoder ( Parameter S-0-0277, position encoder type parameter 1 ).
Note: For devices with analog inputs, the torque can be limited via
an analog torque reduction.
See also the functional description: "Determining commutation offset"
D303 Drive in control at start of command
If the drive controller is in control, then it is not possible to execute
command P-0-0524, D300 Commutation adjustment command.
D306 Power is off
If the power is off, then it is not possible to execute command P-0-0524,
D300 Commutation adjustment command.
D307 Drive does not move
Command P-0-0524, D300 Commutation adjustment command was
terminated with an error.
D308 No adjustment with asynchronous motor
Commutation offset determination is not possible with an asynchronous
motor.
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