8-16
8-4 Overload Characteristics (Electronic Thermal Function)
8
Troubleshooting
8-4 Overload Characteristics
(Electronic Thermal Function)
An overload protection (electronic thermal) function is built into the Servo Drive to protect the Servo
Drive and Servomotor from overloading.
If an overload does occur, eliminate the cause of the error and then wait at least one minute for the
Servomotor temperature to drop before turning on the power again.
If the power is turned ON again repeatedly at short intervals, the Servomotor windings may burn out.
Overload Characteristics Graphs
The following graphs show the characteristics of the load rate and electronic thermal operating time.
R88M-G (Cylindrical Servomotor)
R88M-GP (Flat Servomotor)
50 W
100 W (100 V)
100 W (200 V)
200 W
400 W
100
0.1
1
10
100
150
200
250
300
Torque (%)
115
Time (s)
100 W to 400 W
100
115
0.1
1
10
100
150
200
250
300
Time (s)
Torque (%)
