LINK Systems OmniLink 5000 - Manual (Page 52)

April 12, 2012 Manual Version 1.1 A.2
supported units. The units can be pounds, kilograms, tons, or metric tons. We are using pounds. Note
that the units for minimum and maximum die weight will always be the same, but will not necessarily be
the same as the “Display Weight As” units. This allows us to enter the die weights in whatever units the
name plate uses, but operate the press in a different set of units.
“Min. Die Weight” for a counterbalance should typically be 0. This represents no tooling on the upper
die.
The “Display Weight As” units we set to pounds.
The “Fault Time” we leave at 20 seconds.
The “Tolerance” is left at the default 2 psi.
Finally, we go back to the “Mode” line and use the “CHANGE MODE” key to toggle the mode to
“ON”. The “Auto Sets” operation screen can now be used to set the air pressure or die weight. See
section 5.2 for operation details.
Section A.2 Example Cushion Configuration
This example assumes the cushion system has been wired to the option board at “AS2". First, some
information needs to be gathered.
From the press manual or cushion information plate we find that the effective area of the cushion is 100
square inches and the maximum operating pressure is 90 psi. This means that the cushion will exert 100
pounds of force for every 1 psi of cushion pressure (100 square inches * 1 pound per square inch). We
also found out from experimentation that is takes about 3 psi to initially move the cushion, and that the
cushion just starts to fall at 2 psi. This tells us that approximately 2 psi is required to overcome the
weight of the cushion piston and pressure plate.
The pressure transducer installed on the system is a Setra model C206 that has a pressure range of 0 to
250 psi and an output of 4 to 20 ma.
A type “B” integrated valve controls the pressure (see section 3.1 for a discussion of valve types).
Now we go to the “Auto Sets” screen and with the RUN/PROG switch in PROG hit the “CONFIGURE”
softkey. After typing the configuration code, we press the “CONFIGURE AIR” softkey.
Since the cushion is wired in at “AS2", if the slot reported on the screen in not already “AS2", we hit the
“NEXT AIR SLOT” softkey until it is. The hardware detected should be “Fill/Dump”.
The first thing we must configure is the “Name” of the system. The cursor should already be on the
“Name” line so we check to see if the name is already “Cushion #1". If not, the “CHANGE NAME”
softkey allows us to cycle through the systems.
Using the arrow keys, we move the cursor to the “Transducer Type” line. Looking at table 4.1, we see
that the transducer type for any model pressure transducer with a 250 psi pressure range and a 4 to 20
ma output is “Type 3”. We hit the “CHANGE TYPE” softkey and select Type 3 from the list that
appears. When the proper type is selected, the “Air Pressure” line should change to read the pressure