ECODRIVE03-FL*-04VRS Diagnostic Message Descriptions 12-19
DOK-ECODR3-FL*-04VRS**-FK01-EN-P
F644 Negative travel limit switch detected
The negative travel limit switch has been activated. The axis has been
brought to a standstill with the error response "Set velocity command
value to zero."
Cause:
The negative travel limit switch has been activated.
Remedy:
1. Reset the error.
2. Turn the power supply back on.
3. Move the axis into the permissible travel range.
Note: Command values which would move the axis outside the
permissible range are not accepted, and this error message is
generated again.
F822 Encoder 1 failure: Signal amplitude wrong
The analog signals of an optional measurement system are used for high-
resolution analysis of that measurement system. These signals are
monitored according to two criteria:
1. The pointer length, determined from the sine and cosine signals, must
be greater than 1 V.
2. The maximum pointer length resulting from the sine and cosine
signals must not exceed 11.8 V.
²cos²singthpointerlen +=
Fig. 12-6: : Pointer Length
Dg5004a1_AE.WMF
Fig. 12-7: Correct Signal Amplitude
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