ECODRIVE DKC01.1/DKC11.1 Drive Controllers
DOK-ECODRV-ASE-02VRS**-WAR1-EN-P • 07.96 Description of Diagnostic Letters F... and E... 2-7
F644 Travel Limit Switch Detected
Description:
The motor was moved and tripped one of the two travel limit switches.
The control drive has been instructed to give an error when the travel
range has been exceeded.
Exceeding the travel area as an error:
The drive brakes with maximum torque. Subsequently, the drive goes into
moment free operation. After the error has been cleared, the drive can be
activated again and moved into the allowable travel area.
Cause:
One of the travel limit switches was tripped.
Remedy:
1. Input a command value in the direction of the travel area.
2. Move the travel limit switches, if necessary.
3. Turn off the position limit monitor (when displaying the position
data in modulo format).
F822 Motor Encoder Failure: Signal too Small
Description:
The motor encoder signals are monitored. If the signal amplitudes as
measured via AK1 and AK2 are outside of the allowable region between
U
ss
= 12.0V and U
ss
= 18.0 V, then the error message appears. The drive
becomes torque-free and an optional brake is immediately activated.
Cause:
1. Defective feedback cable.
2. Defective feedback.
Remedy:
For 1. Check the feedback cable
Lay the power cables separate from the feedback cable.
The cable shield must be connected to the drive controller.
(see project reference of the drive control).
For 2. Exchange motor.
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