Delta VFD550C43A-00 - Wiring Diagram

Chapter 17 Safe Torque Off Function | C2000 Plus
17-4
17-3 Wiring Diagram
17-3-1 Internal STO circuit as below:

COM
V+
C2000
CPU
Li ne
drive
Gate
drive
M
DC M
ST O 1
SC M1
SCM2
STO2
+24V
MCM
MO1
I/O Card
Plus
17-3-2 In the figure below, the default setting for +24V-STO1-STO2 and SCM1-SCM2-DCM is
short-circuited:

COM
V+
C2000
CPU
Line
drive
Gate
drive
M
DC M
STO 1
SC M1
SCM2
STO2
+24V
MCM
MO1
I/O Card
Plus