ECODRIVE03-FL*-04VRS Diagnostic Message Descriptions 12-9
DOK-ECODR3-FL*-04VRS**-FK01-EN-P
F237 Excessive position command difference
Cause:
The position command values created by the position loop must be
monitored. If two position command values received in succession
request the drive to produce a velocity that is greater than or equal to the
value in Parameter A106, Maximum Velocity, the position command
value monitoring function is activated.
F242 Encoder 2 failure: Signal amplitude wrong
Cause:
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. 12-4: Pointer Length
Dg5004a1_AE.WMF
Fig. 12-5: Correct Signal Amplitude
Example:
Ucos = -6.5 V
Usin = 6.5 V
()
2V95V65V6gthPointerlen ,,+,=
2
2
Remedy:
1. Check the measurement system cable.
2. Check the measurement system.
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