Sanyo Denki Sanmotion R 3E S, Instruction Manual, Page: 369 / 514

8.3 Trouble shooting when alarm activated
8-36
8
Maintenance
■
Alarm Code D6 (Dual position error feedback error)
 Corrective actions
* Maximum velocity of servo motor will be limited at the system which has larger motor
encoder resolution and feedback electronic gear ratio.
■
Alarm Code D7 (Amplifier communication error)
 Corrective actions
■
Alarm Code DF (Test mode has closed)
 Corrective actions
Status at the time of alarm
Cause
1
Occurred after execution of test mode.
✔
Cause Investigation and corrective actions
1
■
Normal operation.
■
Return to normal operation by
alarm clear. (This is caution
because test mode might have
some deviation in control side after
finish.)
Status at the time of alarm
Cause
1 2 3
Issued after entering position command
pulse.
✔ ✔ ✔
Cause Investigation and corrective actions
1
■
Motor rotation speed is too high.
■
Lower a frequency of command
pulse input.
2
■
Motor encoder pulse setting does
not match with the servo motor.
■
Fit to the motor encoder pulse
number of the servo motor.
3
■
Feedback electronic gear ratio is
too large.
■
Review the setting value of system
parameter ID24/ 25 "Feedback
electronic gear numerator/
denominator".
Status at the time of alarm
Cause
1 2 3 4 5
Issued when control power is turned
ON.
✔ ✔ ✔ ✔
Issued during operation.
✔
Cause Investigation and corrective actions
1
■
Wiring between amplifiers
 wrong wiring
 connector is unplugged
 connector has contact failure
 cable is too long
■
Check the wiring and fix if wrong.
■
Use our recommendation cables.
2
■
With tandem operation
Tandem operation is not set to the
parameter of counterpart axis.
■
Change to "01: Tandem operation" in counterpart
axis system parameter ID08 "Amplifier
communication function".
3
■
Without tandem operation
Tandem operation is set to the
parameter of own axis.
■
Change to "00: Invalid" in own axis system
parameter ID08 "Amplifier communication
function".
4
■
Defect in internal circuit of servo
amplifier.
■
Replace the servo amplifier.
5
■
Malfunction due to noise.
■
Confirm proper grounding of the amplifier.
■
Add ferrite core or similar countermeasures to
against noise.