Sanyo Denki SANMOTION 3E S, Instruction Manual, Page: 310 / 488

8. Maintenance
8-39
■
Alarm Code D6 (Dual position error feedback error)
 The motor encoder frequency after feedback electronic gear
is too high
Status at the time of alarm
Cause
1 2 3
Issued after entering position command
pulse.
✔ ✔ ✔
 Corrective actions
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".
* 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)
 Amplifier communication error during axes-sync operation
Status at the time of alarm
Cause
1 2 3 4 5
Issued when control power is turned
ON.
✔ ✔ ✔ ✔
Issued during operation.
✔
 Corrective actions
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.
2
■
With tandem operation
Tandem operation is not set to the
parameter of counterpart axis.
■
Change to "0x01: Tandem" in counterpart
axis Index 0x2035-A "Amplifier
communication function [AMPIF]".
3
■
Without tandem operation
Tandem operation is set to the
parameter of own axis.
■
Change to "0x00: Disabled" in own axis
Index 0x2035-A "Amplifier communication
function [AMPIF]".
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.