ABB MicroFlex e190 User Manual page 188

188 Appendix: Safe Torque Off (STO)
Using internal 24 V drive source:
MicroFlex e190
PWM control circuit
PWM power
circuit
Drivers
High
U+
V+
W+
Low
U-
V-
W-
Safe Torque Off
connections
X4:4
X4:1
X4:2
Integrated
DC+
Power
Module
DC-
Internal
24V
source.
U
Motor output (U phase shown)
Safety circuit
(emergency stop switch,
relay etc.