Menu 10
Parameter
structure
Keypad and
display
Parameter
x.00
Parameter
description format
Advanced parameter
descriptions
Macros
Serial comms
protocol
Electronic
nameplate
Performance RFC mode
184
Unidrive SP Advanced User Guide
www.controltechniques.com Issue Number: 10
EnC6
Drive encoder trip: Encoder has indicated an error
194
Replace feedback device
With SSI encoders, check the wiring and encoder supply setting
EnC7
Drive encoder trip: Initialisation failed
195
Re-set the drive
Check the correct encoder type is entered into Pr
3.38
Check encoder wiring
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
196
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
revolution (Pr
3.34
)
Check the comms resolution
EnC9
Drive encoder trip: Position feedback selected is selected from a Solutions Module slot which does not have a speed /
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: Servo mode phasing failure because encoder phase angle (Pr 3.25 or Pr 21.20) is incorrect
198
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
).
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.
Enc11
Drive encoder trip: A failure has occurred during the alignment of the analog signals of a SINCOS encoder with the digital
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.
161
Check encoder cable shield.
Examine sine and cosine signals for noise.
Enc12
Drive encoder trip: Hiperface encoder - The encoder type could not be identified during auto-configuration
162
Check encoder type can be auto-configured.
Check encoder wiring.
Enter parameters manually.
Enc13
Drive encoder trip: EnDat encoder - The number of encoder turns read from the encoder during auto-configuration is not a
power of 2
163
Select a different type of encoder.
Enc14
Drive encoder trip: EnDat encoder - The number of comms bits defining the encoder position within a turn read from the
encoder during auto-configuration is too large.
164
Select a different type of encoder.
Faulty encoder.
Enc15
Drive encoder trip: The number of periods per revolution calculated from encoder data during auto-configuration is either
less than 2 or greater than 50,000.
165
Linear motor pole pitch / encoder ppr set up is incorrect or out of parameter range
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.
166
Select a different type of encoder.
Faulty encoder.
Enc17
Drive encoder trip: The periods per revolution obtained during auto-configuration for a rotary SINCOS encoder is not a
power of two.
167
Select a different type of encoder.
Faulty encoder.
EnP.Er
Data error from electronic nameplate stored in selected position feedback device
176
Replace feedback device
Trip
Diagnosis
Summary of Contents for unidrive sp
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