Rockwell Automation 1771-PM , D17716.5.18 U MNL 1771-PM CLUTCH/BRAKE MOD - Manual (Page 52)

Voting Processor Firmware
Chapter 5
5Ć13
Continuous Stroking
From figure
5.7
Both voting processors allow
continuous stroking regardless of
releasing RUN buttons.
Has an operator pressed a
STOPĆONĆTOP button?
Has the PLC transferred a
stopĆonĆtop command?
Has a barrier guard opened?
Both voting processors trip triac
power to stop the shaft. A trip
condition message is displayed.
WARNING: If the shaft coasts
past its nearĆtop position while
braking, the brake is faulty and
hazardous. Repair it immediately.
NOTE: The press strokes continuously until an operator presses a STOPĆONĆTOP button, the
PLC transfers a stopĆonĆtop command, or barrier guard opens.
12267
Yes
No
No
Yes
Yes
The stroke continues until the
shaft reaches the nearĆtop
position
Is the shaft in the nearĆtop
position?
Both voting processors
deĆenergize their solenoid triacs
to stop the shaft in its nearĆtop
position.
Yes
No
No