Emerson Unidrive M702 User Manual

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256 Unidrive M702 User Guide
Issue Number: 3
Encoder 7 Initialization failed
195
The Encoder 7 trip indicates that the set-up parameters for position feedback device has changed. The feedback device
which has caused the trip can be identified by the sub-trip number.
Recommended actions:
• Reset the trip and perform a save.
• Ensure Pr 3.033 and Pr 03.035 are set correctly or carry out an encoder auto-configuration (Pr 03.041 = Enabled)
Encoder 8 Position feedback interface has timed out
196
The Encoder 8 trip indicates that Position feedback interface communications time exceeds 250 μs. The feedback device
which has caused the trip can be identified by the sub-trip number.
Recommended actions:
• Ensure the encoder is connected correctly
• Ensure that the encoder is compatible
• Increase baud rate
Encoder 9 Position feedback is selected from a option module slot which does not have a feedback option module installed
197
The Encoder 9 trip indicates that position feedback source selected in Pr 03.026 (or Pr 21.021 for the second motor map) is
not valid
Recommended actions:
• Check the setting of Pr 03.026 (or Pr 21.021 if the second motor parameters have been enabled)
• Ensure that the option slot selected in Pr 03.026 has a feedback option module installed
Encoder 10 RFC-S mode phasing failure due to incorrect phase angle
198
The Encoder 10 indicates that the phase offset angle in Pr 03.025 (or Pr 21.020 if the second motor map is being used) is
incorrect and the drive is unable to control the motor correctly.
Recommended actions:
• Check the encoder wiring
• Check the encoder signals for noise with an oscilloscope
• Check the encoder mechanical coupling
• Perform an auto-tune to measure the encoder phase angle or manually enter the correct phase angle into Pr 03.025
• Spurious Encoder 10 trips can sometimes be seen in very dynamic applications. This trip can be disabled by setting the
over-speed threshold in Pr 03.008 to a value greater than zero.
Encoder 12 Encoder could not be identified during auto-configuration
162
The Encoder 12 trip indicates that the drive is communicating with the encoder but the encoder type is not recognized.
Recommended actions:
• Enter the encoder setup parameters manually
• Check to see the encoder supports auto-configuration
Trip Diagnosis
Sub-trip Reason
1 Drive position feedback interface 1
2 Drive position feedback interface 2
Sub-trip Reason
1 Drive position feedback interface 1
2 Drive position feedback interface 2
Sub-trip Reason
1 Drive position feedback interface 1
2 Drive position feedback interface 2

Emerson Unidrive M702 Specifications

General

Brand	Emerson
Model	Unidrive M702
Category	Controller
Language	English