Digital Operator Display
Fault Name
The Z Pulse offset is not set properly to E5-11 Set the value for Δθ to E5-11 as specified on the motor nameplate. Replacing the PG encoder or changing
the application to rotate the motor in reverse requires readjustment of the Z-pulse offset. (T2-01 = 3)
An external force on the load side caused the
motor to move
• Make sure the motor is rotating in the proper direction.
• Identify and fix any problems on the load side causing the motor to rotate in the opposite direction.
Noise interference along the PG cable
affecting the A or B pulse
Properly rewire the PG encoder and connect all lines including shielded line.
PG encoder is disconnected, improperly
wired, or the PG option card or PG encoder are
damaged
Rotational direction for the PG encoder set to
F1-05 is the opposite of the motor line order Properly connect the motor lines for each phase (U, V, W).
Digital Operator Display
Fault Name
dv4
Inversion Prevention Detection (CLV/PM control mode only)
Pulses indicate that the motor is rotating in the opposite direction of the speed reference. Set the number
of pulses to trigger inverse detection to F1-19.
Note:
Set F1-19 to 0 to disable inverse detection in applications where the motor may rotate in
the opposite direction of the speed reference.
Cause
Possible Solution
The Z Pulse offset is not set properly to E5-11
• Set the value for Δθ to E5-11 as specified on the motor nameplate.
• If the problem continues after cycling power, replace the PG option card or the PG encoder. Replacing
the PG encoder or changing the application to rotate the motor in reverse requires readjustment of the
Z-pulse offset. (T2-01 = 3)
Electrical signal interference along the PG
cable affecting the A or B pulse
• Make sure the motor is rotating in the proper direction.
• Identify and fix any problems on the load side causing the motor to rotate in the opposite direction.
PG encoder is disconnected, improperly
wired, or the PG option card or PG encoder are
damaged
• Rewire the PG encoder and properly connect all lines including shielded line.
• If the problem continues after cycling power, replace the PG option card or the PG encoder.
Digital Operator Display
Fault Name
dv7
Initial Polarity Estimation Timeout
Cause
Possible Solution
Disconnection in the motor coil winding
• Measure the motor line-to-line resistance and replace the motor if the motor coil winding is open.
• Check for loose terminals. Apply the tightening torque specified in this manual to fasten the terminals.
Refer to Main Circuit Wire Gauges and Tightening Torque on page 98
• Ensure that monitor U6-57 displays a value greater than 819 during the initial test runs for the
application to prevent the drive from incorrectly determining motor polarity. If U6-57 shows a value
less than 819, increase the polarity judge current level set in parameter n8-84.
Loose output terminals
Digital Operator Display
Fault Name
dWAL
DriveWorksEZ Fault
dWFL
Cause
Possible Solution
Fault output by DriveWorksEZ
Correct the cause of the fault.
Digital Operator Display
Fault Name
dWF1
EEPROM Memory DriveWorksEZ Data Error
There is an error in the DriveWorksEZ program saved to EEPROM.
Cause
Possible Solution
Problem with EEPROM data.
Reinitialize the drive (A1-03 = 2220, 3330) and download the DriveWorksEZ program again.
There is an error in the EEPROM control
circuit.
• Turn the power off and check the connection between the control board and the drive.
• If the problem continues, replace either the control board or the entire drive and then download the
DriveWorksEZ program. For instructions on replacing the control board, contact Yaskawa or your
nearest sales representative.
Digital Operator Display
Fault Name
E5
MECHATROLINK Watchdog Timer Error
The watchdog timed out.
6.4 Fault Detection
370
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
Содержание U1000 iQpump Drive
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