Delta VFD2A8MS21ANSAA User Manual

Chapter 17 Safe Torque Off FunctionMS300
770
17-3 Wiring Diagram
 Figure 17-2 shows the internal circuit diagram of the safe control loop.
 The terminals of the safe control loop + 24V-S1-S2 are short-circuited together with the jumper
wire at the factory, as shown in Figure 17-2.
 The safe control loop wiring diagram is as follows:
1. Remove the jumper wire from +24V-S1-S2.
2. The wiring is shown in Figure 17-3 below. Normally, you must close the ESTOP contact
switch, so the drive can output without displaying an error.
3. In STO mode, the switch ESTOP is turned on. The drive stops outputting and the keypad
displays STO.
Figure 17-2
Figure 17-3
NOTE:
*1 is factory jumper wire shorting +24V-S1-S2. To use the Safety function, remove this jumper wire. To
disable the Safety function, short-circuit +24V-S1-S2 with a jumper wire.

Delta VFD2A8MS21ANSAA Specifications

General

Brand	Delta
Model	VFD2A8MS21ANSAA
Category	DC Drives
Language	English