Specifications

Southwestern Industries, Inc.
ProtoTRAK SMX K2, K3, K4 & Retrofit Safety, Installation, Maintenance, Service & Parts List Manual
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As an overall measure of the system hysteresis, we are looking for the X and Y values to be
less than .004". A value greater than this indicates a problem with either excessive friction or
play that may affect the finish or accuracy of machined parts.
4.9.2.2 CODE 12: Feed Forward Constant
The Code 12 procedure helps the control “learn” the friction characteristics of the machine by
sending a graduated series of motor signals and observing the results. The process takes
less than 30 seconds to run. It is both a diagnostic routine that displays values, and a
routine that sets the parameters of the control for the particular machine.
The Code 12 is used for diagnosing and resolving:
• Problems with machine motion.
• Machined parts come out bad – especially poor finish.
Note: Code 12 routine will set the parameters for the particular machine and its particular situation.
If the machine changes its friction characteristic, the Feed Forward Constant should change too, or
the system will not servo properly. Whenever gibs are adjusted or a heavy workpiece has been added
to the table, you should run a Code 12. When the heavy workpiece is removed, Code 12 should be run
again.
1. Position the table and addle in the center of travel. Note: You will lose your DRO position
reference.
2. Go into the Service Codes and input the Code 12.
3. Press Auto
4. The system will run the routine automatically and then display values on the position
readout.
Explanation
Typical values should be between 4.04 and 11.11 are considered normal for each axis. Higher
values indicate excessive friction in the system. Lower values indicate a loose system and
may mean a gib adjustment is necessary. Value 4.04 means the friction is a factor of 4 in
one direction, and 4 in the other direction. The values should be within 3 or 4 of each other
in both directions. A value of 6.08 would still be considered normal.
On S products, do not equate Code 12 values to torque on ballscrew. Measure friction in
system with an in-lb torque wrench.
The feed forward gain can be adjusted manually by pressing the manual button. Choose the
axis you would like to change and then enter values in the positive and negative direction to
adjust. Adjusting the gain can help solve circularity problems. Default values can be set by
pressing the Reset button. The manual feature should only be used in extreme cases where
the AUTO routine did not solve the problem. Manual adjusts above 12 may lead to servo
related problems.
4.9.2.3 CODE 100: Axis Open Loop Test
Code 100 procedure is used to diagnose problems with the configuration of the system, the
encoders and incoming A/C voltage.
CAUTION!
During this procedure, the designated axis will be given a command to move at maximum speed for 1
second in the direction you choose. Avoid crashes by making sure the quill is out of the way and by
starting with the table and saddle centered. MAKE SURE THAT NO ONE IS STANDING IN THE WAY
OF THE TABLE OR SADDLE!
Note: You will lose the DRO reference position.
This procedure is to be run for each axis that is servo-driven, and for both the plus and minus
direction for each axis.