E1 Series Servo Drive User Manual Electrical Planning
5-34 HIWIN MIKROSYSTEM CORP.
5.6 STO connector (CN4)
5.6.1 Pin definition of STO connector
For more information of STO safety function, please refer to chapter 12. Before using STO safety
function, pay attention to the pin definition. If STO safety function is not used, plug the safety jumper
connector provided with the servo drive into CN4. If it is not plugged in, the servo drive will not output
current to the motor.
Figure5.6.1.1
Table5.6.1.1
Reserved Do not use.
SF1 and SF2 signals are input via two independent circuits. If
SF1 and SF2 signals are not input, the internal power module
of the servo drive will be shut down to cut off the output current.
Monitors if safety function is normal.
4
SF1+
6
SF2+
8
EDM+
7
EDM-
5
SF2-
3
SF1-
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