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System Overview
The PressCam 8 is a resolver-based press automation
controller that incorporates a programmable cam limit
switch, timed brake monitor, four counters, die protection
system, and (optional) tonnage monitor in one complete
package. The unit contains two 16-bit computers that
are confi gured to cross check each other as well as
the resolver and cable every cycle of code. All faults
generate descriptive error messages and special
watchdogs shut down the system should either computer
become erratic. The software can be upgraded in the
fi eld using a PC computer with a standard serial port.
Features
• Up to seven Limit Switch outputs can be set to
cycle (non-timed) up to three times per crank
rotation by setting an open / close crank angle.
• The last four outputs can be set for timed, non-
timed, delayed and hold or cycled two times per
crank revolution.
• The fi ve additional outputs are used to indicate
when the batch counter is reached, sensor faults,
general faults, and motion detection.
• The fi rst thirteen outputs can be either solid-state
(AC or DC) or relay logic. The last three are force-
guided (Form B Safety) relays between the begin/
end crank angles. A missed transition outside the
declared window will generate a die sensor fault.
• Brake and die sensor inputs are optically coupled
and can be either AC or DC (sourcing or sinking).
• Up to 75 Jobs can be saved using nonvolatile
memory chips. These memory chips are
removable for ease of transfer. Each job number
stores a name and/or number up to 13 characters
for easy identifi cation.
• Built-in Brake Monitor will issue a warning when
the programmed warning time is exceeded and
will issue a failure signal when programmed stop
time is exceeded.
• True Motion Detection system that checks for Lack
of Motion (Motion Fault) and Unintended Motion
(Drift Fault).
• SPM Indicator (Strokes per Minute).
• Crank angle shown graphically and in large
numbers.
• Speed compensation of user selected outputs.
• Servo feed setup.
• Stroke, Batch, Quality, and Part Counters to keep
track of operation.
• Digital contrast adjustment of LCD screen.
• Password and/or Supervisory Controlled Selector
Switch to prevent altering of parameters, except
counters and LCD contrast.
• Four-channel tonnage monitoring.
• PCLink to allow offl ine job storage and creation.
Specifi cations
Input Power
3 VOLTAGE RANGES:
24 VDC (optional)
120 VAC (standard)
240 VAC (optional, jumper selectable)
All AC voltages work with 50 or 60 Hz
24 watts with all relays
Fuses
I/O board
F1 to F16 LS Outputs 5A Fast Blow (20-023)
F17 Power 1A Slow Blow (20-022)
F18 to F33 DIE Inputs 5A Fast Blow (20-023)
F35 12VDC 5A Fast Blow(20-023)
Computer
F1 Power 5A Fast Blow (20-023)
Indicator
Computer Monochrome LCD display 640 x 480
(8” Diagonal)
-LCD BIAS (GRN) D16
Vpp (YELL) D2
-5v (GRN) D10
I/O Board +12Vdc (RED) D35
17 Optically Coupled inputs (Die’s
are YEL & 12VDC, Brake is RED &
120VAC)
13 Solid-State or mechanical relay
outputs (Form C output). Customer
must specify which type of output
(i.e., AC or DC, Voltage Range, Solid
State or Relay 5A SPDT) (GRN)
3 Force guided/monitored relay
outputs (N.O. output 8A) (GRN)
D52 = RED (power down indicator)
D53 = RED (AUX)
Introduction
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