Allen-Bradley ClutchBrake PLC-5 Series - Clutch;Brake Control Functions

1–8 Overview of the Clutch/Brake Control System
Publication 65566.5.1 - October 1996
Clutch/brake control functions are summarized in Table 1.A.
Table 1.A
Summary
of Clutch/Brake Control Functions
Control Function Operating Mode Description
Selector Switch
Off Prevents energization of clutch/brake outputs.
Inch Lets the operator jog the press through through successive parts of the cycle by pressing
and releasing the pair of INCH buttons. If INCH buttons are held, the press will stop at
the top of its stroke.
Micro-inch This mode of operation lets you run your press a low speeds (1 spm typical) for setting
up dies. You must supply a separate drive and clutch/brake assembly to drive the shaft
at low press speeds, bypassing the flywheel.
Singlestroke Lets the operator jog the press through one complete cycle stopping on top,
by holding both RUN buttons until completion of the down stroke.
Continuous Lets the operator run the press continuously until stopped by a stopontop command,
or until a fault is detected. The method to start the press is a factory configured option:
• close the ARM CONTINUOUS switch and press both RUN buttons in all active stations
within five seconds.
• hold both RUN buttons for half a stroke until takeover (runon) cams close
(or for 11/2 strokes if so configured).
Remote Lets you program the selection of these modes remotely:
• inch
• microinch
• single stroke
• automatic single stroke
• continuous
Lets you program automatic press motion with:
• simulate inch buttons
• simulate run buttons
• arm for continuous on demand
Onthehop Singlestroke Lets the operator recycle the press without stopping by releasing and pressing both RUN
buttons during a specific portion of the upstroke. (factoryconfigured option)
Stopontop
(cycle stop)
Continuous Lets the operator stop the press at top of stroke (after the takeover cam signal turns off).
Interrupted stroke Singlestroke
or Continuous
Lets the operator stop the press quickly by releasing a RUN button during a downstroke.
Antitiedown All Prevents the press from starting if the system detects that an operator has tied down one
or more RUN buttons. After all RUN buttons are released, the operator must press both
RUN buttons at a station at the same time. The same applies to the pair of INCH buttons.
Antirepeat
Singlestroke Limits press operation to a single stroke, even if the operator continues to press both
RUN buttons. The operator must release and press them again to start the next stroke.
Inch Limits press operation to a single stroke when using a pair of INCH buttons.
Motion detector Singlestroke
or Continuous
Configurable option designed to detect press motion from a hardware or software input.
Brake Monitor All Configurable option designed to prevent restarting the press when the system detects a
faultybrake signal from the brake monitor cam (BCAM) or from a timebased input.
Clutch/Brake
Control Functions