Pressroom Electronics PressCam 8, Installation And Operation Manual, Page: 31 / 56

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Function Description
Operation
• You must have a value placed into the “MIN”
column of the “Tonnage Setup” screen. 1 ton or
more activates the sensor. 0 tons turns off the
sensor.
• The “MAX” column of the “Tonnage Setup” screen
should be set to the maximum tonnage needed
for the Job, but not greater than ¼ the capacity of
the machine.
• The “PEAK” column of the “Tonnage Setup” screen
shows the last cycle peak reading, not a live value.
• The “COUNT” column of the “Tonnage Setup”
screen shows actual live value in counts.
• Make sure the PROBE LED on the TLM lights up
just before the hit takes place and remains lit until
just after 270°.
• The RUN screen will show the last stroke’s peak
readings.
Setup and Calibration
1) Go to “Press Utility” and set the Total maximum
tonnage capacity of your machine, from 10 to
9999 tons.
2) Go to “Tonnage setup” and follow the Toledo
instructions on how to calibrate the TLM load
sensors. You can use the Tonnage setup screen
“Counts” column as a voltage meter to help you
set the proper voltages. (0 counts = 0v, 512
counts=2.5v (full load), 1024=5.0v)
3) You must set the “Min” column above 0 to
activate that sensor and just below the minimum
tonnage you expect for this job. The sensor input
is turned off if this is set to 0.
4) Set your “Max” column to the maximum tonnage
for this job, but less than 1/4
th
of the total
machine capacity.
5) Go to “Limit Switch Setup screen” and select the
limit switch output that you decided on above in
step 2) of the Installation section. This will trigger
the peak reading function on the TLM. Set this
angular window for 140° to 300°.
6) The Presscam 8 will expect the tonnage sensor
to be less than the Max value during the entire
tonnage window (140° to 270°, these values are
built in to the Presscam 8)
7) The Presscam 8 will expect the tonnage sensor
to be greater than the Min value only after the
press reaches 270°. The TLM peak value must
be greater than the Min value. This dictates
that you set up a window for the TLM that goes
beyond 270° (around 300°).
NOTE: Do not run the Press in PROGRAM mode,
this mode is only for setup. Faults are generated,
but the fault relays will not open up.