Yaskawa FSP Amplifier - Manual (Page 282)

FSP Amplifier User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
9-17
„ A.73: Dynamic Brake Overload
Display and Outputs
Alarm Outputs
Alarm Code Output
ALO1 ALO2 ALO3
ALM Output
ON ON ON OFF
Note: OFF: Output transistor is OFF (alarm state).
ON: Output transistor is ON.
Status and Remedy for Alarm
When the Servo OFF
(/S-ON) signal is
turned ON.
At power ON.
A B
Cause of the Problem Solution
A
The product of the square of rotational
motor speed, the combined inertia of the
motor, and load (rotation energy) exceeds
the capacity of the dynamic brake resistor
built into servo amplifier.
• Reduce the rotational speed.
• Decrease the load inertia.
• Minimize use of the dynamic
brake.
B Defective circuit board (1PWB). Replace servo amplifier.