Rockwell Automation 1771-PM , D17716.5.18 U MNL 1771-PM CLUTCH/BRAKE MOD - Manual (Page 47)

Voting Processor Firmware
Chapter 5
5Ć8
Figure 5.4
Operational Sequence for Upstroke in Single Mode
Start upstroke.
From figure 5.3
Upstroke continues regardless of
releasing RUN buttons
Have both voting processors
detected that antiĆrepeat cams
have opened?
Has onĆtheĆhop been enabled?
Has the shaft moved into its
nearĆtop position?
Have all operators released all RUN
buttons?
NOTE: The shaft continues automatically through its upstroke, then stops. If onĆtheĆhop has
been enabled, operators can start another downstroke without stopping at the top. Do this by
releasing all RUN buttons after the downstroke. Then, press all RUN buttons after the antiĆrepeat
contacts open on the upstroke.
12263
Yes
No
Yes
Both voting processors
deĆenergize their solenoid triacs
to stop the shaft. A stop condition
mesage is displayed.
Has the shaft moved into its
nearĆtop position?
No
Has each operator pressed his RUN
buttons simultaneously, and within 5
seconds for all stations?
Has the shaft moved into its nearĆtop
position?
Has an operator released a RUN
button?
No
Yes
No
Yes
Yes
Yes
No
Yes
Both voting processors
deĆenergize their solenoid triacs
to stop the shaft in its nearĆtop
position
WARNING: If the shaft coasted
past its nearĆtop position while
braking, the brake is faulty and
hazardous. Repair it immediately.
Start onĆtheĆhop downstroke.
Go to figure 5.3
Has the shaft moved into its nearĆtop
position?
No
No
Yes
Yes
No