Overload Characteristics (Electronic Thermal Function) - Omron R88M-1M Series User Manual

3 Specifications

3-1-17 Overload Characteristics (Electronic Thermal Function)

The overload protection function (electronic thermal) is built into the Servo Drive to protect the Servo
Drive and Servomotor from overloading.
If an overload occurs, first eliminate the cause of the overload and then wait for the Servomotor
temperature to drop before you turn ON the power again.
If the error reset is repeated at short intervals, the Servomotor windings may burn out.
Overload Characteristics Graphs
The following graphs show the electronic thermal operation time after continuous operation with 100%
load (hot start).
The electronic thermal operation time after a continuous 0% load state (cold start) is longer than that for
a hot start.
In cases where models with an oil seal or with a brake have different characteristics, each of their char-
acteristics is described.
The characteristics are the same as those of models with no option unless otherwise specified.
In the some models, the detection time of the overload protection function is shorter than existing mod-
els. If the overload warning or error occur, change the operation pattern by increasing the accelera-
tion/deceleration time or the like.
 100-VAC Servomotors
• 50 W
R88M-1M05030S
10000
1000
100
10
1
0.1
100%
150% 200%
Output current ratio [%]
3 - 38
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User's Manual (I586)
S,BS (rotation)
S,BS (lock)
OS,BOS (rotation)
OS,BOS (lock)
250% 300% 350% 400%
• 100 W
R88M-1M10030S
10000
1000
100
10
1
0.1
100%
150% 200%
Output current ratio [%]
S (rotation)
S (lock)
OS,BS,BOS (rotation)
OS,BS,BOS (lock)
250% 300% 350% 400%