Manual

Voting Processor Firmware
Chapter 5
54
Figure 5.1
Cam
Limit Switch Settings
Near Top
Position
Run - On
Near Bottom
Zone
Upstroke
Anti - Repeat
before run-on contacts make, or the controller faults.
Run-on contacts must make (not necessarily at the same time)
before
Anti-repeat contacts must break for at least 70ms during
upstroke, then make before run-on contacts break, or the controller faults.
Anti-repeat contacts must make (not necessarily at the same time)
before run-on contacts break, or the controller faults.
Run-on contracts must break (not necessarily at the same time)
MAKE
MAKE
MAKE
BREAK
MAKE
MAKE
BREAK
MAKE
MAKE
MAKE
MAKE
BREAK
MAKE
MAKE
BREAK
BREAK
BREAK
BREAK
Down-
stroke
Near
Bottom
Up-
stroke
Near
Top
Run-On
Anti-
Repeat
Zone
Comments
Cam Linit Switch Settings
Refer to Diagnostic Messages, table 7.C. Hex codes 80 thru AA, for descriptions of faults caused
by cam limit switches.
12970
70 ms
NOTE:
Install two mechanically independent cam limit switch assemblies each with three cams and three
limit switches. Set the assemblies to similar settings according to the requirements of your press.
You can set cam limit switches to other configurations provided they meet the make/break conditions
listed below:
Downstroke
Top-Stop
-Check
Topstopcheck
contacts must make (not necessarily at the same time)
T opstopcheck contacts break, or the controller faults.
T opstopcheck contacts must break (not necessarily at the same time)
before antirepeat contacts break or the controller faults.
before T
opstopcheck contacts make or the controller faults.
Top-stop-
check
Table 5.A
Operation
of Cam Limit Switches
This
Cam
In this
Mode
W ith these
Conditions Provides the PM Module a Signal:
Anti
Repeat
Onthehop single
stroke
Run buttons released
past bottom
T o allow a second stroke when run buttons
are pressed a second time
Runon Inch and Microinch
(forward) and Single
stroke
Cam opens at neartop
position T o turn OFF triac output for
stopontop (cycle stop)
Continuous Cam opens at neartop
position after
stopontop command
Single stroke and
Continuous
Cam closes at
nearbottom position
T o let operator release any depressed run
buttons without interrupting a single stroke
or continuous stroking
TopStop
Check
any Cam closes during
stopontop
T o energize a Brake Fault output to warn
that the brake is faulty (Hazardous
Condition)
Inch and
Microinch
(reverse)
Cam opens in neartop
position
T o turn OFF solenoid outputs to stop the
cycle