3-22 Description of diagnostic letters F... and E... ECODRIVE03 SMT-02VRS
DOK-ECODR3-SMT-02VRS**-WA01-EN-P
Note: The error cannot be cleared in communications phase 4.
Before clearing the error, switch to communications phase 2.
Note: When an incremental encoder with squarewave signals is
used, the signal is not monitored.
Cause:
1. Defective encoder cable
2. Disruptive electro-magnetic interference on the encoder cable
3. Defective encoder
Remedy:
1. Check the measurement system cable.
2. Lay the feedback cable well away from the motor power cable. The
cover must be placed over the drive controller (see drive controller
project specifications.)
3. Check the measurement system and exchange, if necessary.
F860 Overcurrent: short in power stage
The transistor (IGBT) current has exceeded the allowed maximum peak
value. The drive is immediately disabled, the motor freewheels to a stop.
Cause:
1. Short circuit in the motor or motor cable.
2. Defective power section of the drive controller
3. The current regulator was parameterized with wrong values.
Remedy:
For 1. Check the motor cable for a short.
For 2. Exchange the drive controller.
For 3. Check that the current controller parameters are as given in the
motor data sheet; if they differ, input the correct values.
F870 +24Volt DC error
The drive controller requires a 24-V control voltage. The drive’s torque is
released immediately when the maximum permissible tolerance of
+-20% is exceeded. If an optional electrically released motor holding
brake is present, then it is activated.
Cause:
1. Defective cable for the control voltages.
2. 24-V power supply overload.
3. Defective power supply unit.
4. Short-circuit in the emergency stop circuit.