![background image](http://html.mh-extra.com/html/abb/microflex-e190/microflex-e190_user-manual_5164189.webp)
X4:1
X4:2
X4:3
U
DC+
DC-
MicroFlex e190
U+
V+
W+
U-
V-
W-
+24 V
+24 V
+0 V
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
Common
External
24 V
source.
Notes:
* The STO function is activated when one or both of the safety circuit contacts open. If the period between
both contacts opening or closing exceeds a predefined value, a fault in the safety circuit or wiring is assumed
and an error is reported.
* The maximum cable length between drive and the safety switch is 30 m (98 ft).
Appendix: Safe Torque Off (STO) 189
Using external 24 V sources:
WARNING!
The STO function does not disconnect the voltage of the main and
auxiliary circuits from the drive. Therefore maintenance work on electrical parts
of the drive or the motor can only be carried out after isolating the drive system from
the main supply. If the drive was connected to the input power, wait for 5 minutes after
disconnecting the input power.
Summary of Contents for MicroFlex e190
Page 1: ...ABB motion control User s manual MicroFlex e190 servo drive ...
Page 4: ......
Page 12: ...12 Table of contents ...
Page 26: ...26 Introduction to the manual ...
Page 90: ...90 Electrical installation input output ...
Page 146: ...146 Maintenance ...
Page 178: ...178 Resistor braking ...
Page 186: ...186 Accessories ...
Page 208: ...208 Appendix Safe Torque Off STO ...