Rockwell Automation 20C-DG01 PowerFlex 700H AC Drive Safe Torque Off Option - Manual (Page 18)

18 Rockwell Automation Publication 20C-UM001B-EN-P - June 2011
Chapter 2 Installation and Wiring
Figure 2 - Example 1 - Drive Safe Torque Off Connections with Coast-to-Stop Action
and Emergency Stop Operation, Dual Channel, without External Relay
Circuit Status – Circuit shown with guard door and E-stop closed and system
ready for normal operation.
Operating Principle – Opening the guard door or pressing the E-stop button
will disable the drive gate firing circuit, the motor will coast to stop. The drive can
be configured to display a “Gate Disable” fault or alarm (F59) on the HIM when
the gate control circuit is disabled.
When the guard door or the E-stop button is closed, the drive remains in a
faulted state. Once the drive fault is cleared a valid start command will restart the
drive.
Stop
Start
GuardMaster
Trojan
M
3 SD2+
2 SD1-
4 SD2-
1 SD1+
Gate
Control
Circuit
Gate Enable
PowerFlex 700H
AC Drive
AC Line
Input Power
+24VDC
Stop
Start
24V Com
DigIn Com
E-Stop
Latching
Button
Safe-Off Option Board