Rockwell Automation 20C-DG01 PowerFlex 700H AC Drive Safe Torque Off Option - Manual (Page 21)

Rockwell Automation Publication 20C-UM001B-EN-P - June 2011 21
Installation and Wiring Chapter 2
Torque Off option board when the gate is opened. A single fault detected on the
Minotaur safety input circuits will result in the lock-out of the system to a safe
state (off ) at the next operation and will not cause loss of the safety function.
Each of the inputs on the Safe Torque Off option board independently monitors
the status of the safety circuit and the status of the other input on the board.
Fault/Alarm Configuration The drive’s fault or alarm response to a gate circuit disable can be configured in
one of four ways when using the 20C-DG1 option board, each resulting in the
drive being put into a gate disabled state when digital inputs (SD1 and SD2) are
de-energized.
1. Gate Disable Fault (59):
Configured by setting bit 10 “Gate Disable” of parameter 238 [Fault
Config1].
If either or both digital inputs open, the drive output will be disabled and
the motor will stop as programmed. The drive HIM will display fault 59
“Gate Disable”.
When the condition is cleared, the fault can be reset and the drive can be
restarted. Refer to
Table 3 on page 23 for a description of drive conditions
and actions.
2. Gate Disable Alarm (59):
Configured by setting bit 15 “Gate Disable” of parameter 259 [Alarm
Config1].
If either or both digital inputs open, the drive output will be disabled and
the motor will stop as programmed. The drive HIM will display alarm 59
“Gate Disable”.
When the condition is cleared, the alarm will automatically clear in 10
seconds and the drive can be restarted. Refer to
Table 3 on page 23 for a
description of drive conditions and actions.
3. Neither of the “Gate Disable” bits, 10 in parameter 238 [Fault Config1] or
15 in parameter 259 [Alarm Config1], are set.
If either or both digital inputs open, the drive output will be disabled and
the motor will stop as programmed. No fault or alarm will be displayed on
the HIM, but the Gate Disable status can be seen in bit 0 “Gate Disable” of
parameter 359 [20C-DG1 Status].
When the condition is cleared, the drive can be restarted after 3 seconds.
Refer to
Table 3 on page 23 for a description of drive conditions and
actions.