Omron R88D-KN01H-ECT-L, User Manual

Page: 101 / 626

3 - 25
3 Specifications
G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications
3-
2 Overload
Cha
rac
teristic
s (Elect
ro
nic T
h
erm
al
Fu
nct
ion)
3
3-2 Overload Characteristics
(Electronic Thermal Function)
An overload protection function (electronic thermal) is built into the Servo Drive to protect the drive and
Linear Motor from overloading.
An overload error will occur according to the timing characteristic if the feedback value for the force
command exceeds the overload level.
The overload level is dependent on the Overload Detection Level Setting (3512 hex) and the timing
characteristic on the Motor Overload Curve Selection (3929 hex), respectively. Be sure to set the
Overload Detection Level Setting according to the environment in which the Servo Drive is used.
The Motor Overload Curve Selection (3929 hex) will be set automatically based on the selected Motor
Coil Unit model when the Linear Motor settings are initialized.
If an overload error occurs, first eliminate the cause of the error and then wait at least 1 minute for the
motor temperature to drop sufficiently (for both the Motor Coil Unit and the Magnet Track) before turning
ON the power again.
If the error reset is repeated at short intervals, the motor may burn out.
The following graphs show the motor overload characteristic curves that can be selected in the Motor
Overload Curve Selection (3929 hex), where the horizontal axis represents the load ratio and the
vertical axis represents electronic thermal operation time.
Index Name Unit
Setting
range
Description Reference
3512
hex
Overload Detection
Level Setting % 0 to 500 Set the overload detection level.
If set to 0, the overload level will be 115%. If set to 115
or higher, this will be restricted internally to 115%.
P. 9-43
3929
hex
Motor Overload
Curve Selection – 0 to 7 This represents one of the overload detection
characteristic values that correspond to eight
thermal time constants.
It is set automatically according to the selected
motor model when the Linear Motor settings are
initialized. The default setting is 0.
P. 9-70
Set value
Thermal time
constant
Motor Coil Unit model
0 20 -
1 36 R88L-EC-GW-0303/-0306/-0309
2 72 R88L-EC-GW-0503/-0506/-0509
3 96 R88L-EC-GW-0703/-0706/-0709
4 110 R88L-EC-FW-0303/-0306
5 124 R88L-EC-FW-0606/-0609/-0612
6 126 R88L-EC-FW-1112/-1115
7 200 Servo Drive protection only