100:Xx Ratio Tolerance Entry - Graco VRM 24F872 Instructions Manual

100:XX Ratio Tolerance Entry

The existing XX:1 format for tolerances is a simple %
entry based on the ratio dispensed, as illustrated below
on the System #3 setup screen:
313873J
So in XX:1 ratio forma5t, with a ratio set point of 4.0:1,
ratio greater 4.08 to 1 and less than 3.92 to 1 will gener-
ate an off deviation alarm, and ratios greater than 4.16
to 1 and less than 3.84 to 1 will generate an off ratio
alarm. Off ratio alarms will not only generate the error
pop-up window, but will also terminate a dispense.
when 100:xx format, the tolerances are entered as
parts. Hence, as illustrated below for the 100:xx format
system #3 setup screen:
The same 4.0:1 ratio in 100:xx format (100:25) has toler-
ances of + and - 0.5 parts for the deviations, and + and -
1.5 parts the alarm tolerances. So ratios greater than
100 to 25.5 and less than 100 to 24.5 will generate an
off ratio deviation, and ratios greater than 100 to 26.5
and less than 100 to 23.5 will generate an off ratio
alarm, and the dispense will be terminated.
Operation
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