Delta VFD220C43A-21 - Page 1004

Chapter 14 Fault Codes and DescriptionsC2000 Plus
14-101
ID
Display on LCD Keypad
Fault Name
Fault Descriptions
174
Encoder error
(EcEr)
The difference of encoder’s two sampling positions is
too large (over the expected fiducial value)
Action and Reset
Action condition
The difference of encoder’s two sampling positions is too large, the EcEr
occurs
depending on the encoder position
Action time
Pr.10-46 high bit determines the allowed continuous number of times
For example: Pr.10-46 = 050D, the allowed continuous number of times is 5
errors
Fault treatment parameter
N/A
Reset method
Manual reset
Reset condition
N/A
Record
Yes
Cause
Corrective Actions
Encoder is interfered by the noise,
and cause the feedback position
error
Verify if the PG card and encoder wiring meets anti-interference performance.