ABB MicroFlex e190 - Page 188

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