ABB MicroFlex e150 User Manual

64 Electrical installation: input / output
 Digital inputs - Safe Torque Off (STO)
Location: X3, pin 18 (STO1), 8 (SREF), 19 (STO2), 9 (SREF)
The two safe torque off (STO) inputs are identical. Each input directly enables part of
the motor output control circuit. Both inputs must be powered to allow the
MicroFlex e150 to supply power to the motor. If an additional hardware drive enable
input is used to control the MicroFlex e150, it must not be wired with the STO input
circuit. The state of the STO inputs can be viewed using the Mint WorkBench Spy
window's Axis tab. See the Mint help file for details.
See Appendix: Safe Torque Off (STO) on page 173.
Safe Torque Off digital input - STO1:
Safe Torque Off digital input - STO2:
33R 6k8
33R
Vcc
DGND
TLP281
18
8SREF
20
STO1
MicroFlex e150
X3
STO
circuit
Shield
33R 6k8
33R
Vcc
DGND
TLP281
19
9SREF
20
STO2
MicroFlex e150
X3
STO
circuit
Shield

ABB MicroFlex e150 Specifications

General

Brand	ABB
Model	MicroFlex e150
Category	Control Unit
Language	English