User Manual Of EL7-EC** AC Servo
41
STO wiring diagram
3
SF1-
SF2+
24V
4
6
SF1+
8
7
EDM+
EDM-
2.2K
2.2K
SF2-
1
2
5
0V
24V
24v power supply
only for STO,
please do not use
it for other
purposes.
CN6
3
SF1-
SF2+
24V
4
6
SF1+
24V
8
7
EDM+
EDM-
2.2K
2.2K
SF2-
1
2
5
0V
24V
Please disconnect
0V and 24V while in
use
CN6
External
power supply
STO not in use
STO in use
Please take precautions when enabling STO functions as servo drive will lose
control over the motion of the motor. Motor might dropped under gravitational pull
(vertically mounted load) or moved when external forces are applied to it.
Alternatively, motor with holding brake can be chosen.
STO is not meant to cut off the power supply of the servo drivers and motors
completely. Please power off and wait for a few minutes before starting
maintenance work.
It is recommended to use an isolated power supply for STO signal input as any
current leakage might cause STO malfunction.