Sanyo Denki SANMOTION 3E S, Instruction Manual, Page: 290 / 488

8. Maintenance
8-19
■
Alarm Code 54 (Built-in Regenerative Resistance Overheat)
 Overheating detection of internal regenerative resistor
Status at the time of alarm
Cause
1 2 3
Issued when control power supply is turned
ON.
✔ ✔
Issued during operation. ✔ ✔ ✔

Corrective actions
Cause Investigation and corrective actions
1
■
Defect in internal circuit of servo
amplifier.
■
Replace the servo amplifier.
2
■ Regenerative power excessive.
■
Check the built-in regenerative resistor
allowable power.
■
Check the operating conditions to keep
that consumption power is below of
allowable power.
■ Use an external regenerative resistor.
3
■ Resistor wiring is wrong at built-in
regenerative resistor model.
■ Check the wiring conditions and correct it
if improper.
* When using a regenerative resistor built in the servo amplifier, make sure to set "0x01:
Built-in_R" at the Index 0x20FD-2 “Regenerative Resistor Selection”. This setting decides
enabled/disabled of the overheating protection detection treatment of the built-in regeneration
resistance.
* Built-in regenerative resistance overheat does not detected when "0x02 External_R" is selected.
Therefore, there is a danger that built-in regenerative resistance will burn out or be damaged.