Omron R88D-KN series User Manual page 100

3 Specifications
 When Overload Detection Level Setting is 115%
Time (s)
1000
100
10
1
0.1
115
100 150
If a constant force command is continuously applied after a period of time equivalent to 3 or more times
the overload time constant with the force command value set to 0, the overload time t [s] will be:
t [s] = -Overload time constant [s] x log
Precautions for Correct Use Precautions for Correct Use
• The overload protection function is not designed to provide protection against errors caused
by heat generated by the motor.
• If you improperly set the Motor Overload Curve Selection (3929 hex) value too high, the Motor
Coil Unit may burn. Check in the actual operating environment to be sure that no problem
occurs due to heat generated by the motor or other causes before using the Servo Drive.
Additional Information
The overload time constant [s] depends on the linear motor. The standard overload level is
100%.
3-26
3929 hex=5, 6
200 250 300
(1 - Overload level [%]/Force command [%])
e
G5 Series AC Servo Drives With Built-in EtherCAT Communications, Linear Motor Type
350 400 450
2
3929 hex=0
3929 Hex=1
3929 Hex=2
3929 Hex=3
3929 Hex=4
3929 Hex=5
3929 Hex=6
3929 Hex=7
500
Force (%)