Control Techniques Digitax ST Advanced User's Manual page 128

Parameter
Menu 10
structure
Trip
EnC7 Drive encoder trip: Initialisation failed
Re-set the drive
Check the correct encoder type is entered into Pr 3.38
Check encoder wiring
195
Check encoder power supply is set correctly
Carry out the auto-configuration Pr 3.41
Replace feedback device
EnC8 Drive encoder trip: Auto configuration on power up has been requested and failed
Change the setting of Pr 3.41 to 0 and manually enter the drive encoder turns (Pr 3.33) and the equivalent number of lines per
196 revolution (Pr 3.34)
Check the comms resolution
Drive encoder trip: Position feedback selected is selected from a Solutions Module slot which does not have a speed /
EnC9
position feedback Solutions Module installed
197 Check setting of Pr 3.26 (or Pr 21.21 if the second motor parameters have been enabled)
EnC10 Drive encoder trip: Phasing failure because encoder phase angle (Pr 3.25 or Pr 21.20) is incorrect
Check the encoder wiring.
Perform an autotune to measure the encoder phase angle or manually enter the correct phase angle into Pr 3.25 (or Pr 21.20).
198 Spurious EnC10 trips can be seen in very dynamic applications. This trip can be disabled by setting the overspeed threshold in
Pr 3.08 to a value greater than zero. Caution should be used in setting the over speed threshold level as a value which is too large
may mean that an encoder fault will not be detected.
Drive encoder trip: A failure has occurred during the alignment of the analog signals of a SINCOS encoder with the digital
Enc11 count derived from the sine and cosine waveforms and the comms position (if applicable). This fault is usually due to noise
on the sine and cosine signals.
Check encoder cable shield.
161
Examine sine and cosine signals for noise.
Enc12 Drive encoder trip: Hiperface encoder - The encoder type could not be identified during auto-configuration
Check encoder type can be auto-configured.
162 Check encoder wiring.
Enter parameters manually.
Drive encoder trip: EnDat encoder - The number of encoder turns read from the encoder during auto-configuration is not a
Enc13
power of 2
163 Select a different type of encoder.
Drive encoder trip: EnDat encoder - The number of comms bits defining the encoder position within a turn read from the
Enc14
encoder during auto-configuration is too large.
Select a different type of encoder.
164
Faulty encoder.
Drive encoder trip: The number of periods per revolution calculated from encoder data during auto-configuration is either
Enc15
less than 2 or greater than 50,000.
Linear motor pole pitch / encoder ppr set up is incorrect or out of parameter range
165 i.e. Pr 5.36 = 0 or Pr 21.31 = 0.
Faulty encoder.
Enc16 Drive encoder trip: EnDat encoder - The number of comms bits per period for a linear encoder exceeds 255.
Select a different type of encoder.
166
Faulty encoder.
Drive encoder trip: The periods per revolution obtained during auto-configuration for a rotary SINCOS encoder is not a
Enc17
power of two.
Select a different type of encoder.
167
Faulty encoder.
EnP.Er Data error from electronic nameplate stored in selected position feedback device
176 Replace feedback device
Et External trip from input on terminal 31
Check terminal 31 signal
Check value of Pr 10.32
6
Enter 12001 in Pr xx.00 and check for parameter controlling Pr 10.32
Ensure Pr 10.32 or Pr 10.38 (=6) are not being controlled by serial comms
HF01 Data processing error: CPU address error
Hardware fault - return drive to supplier
128
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Digitax ST Advanced User Guide
Issue Number: 1