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XYZ Machine Tools
ProTURN SLX 1630 ProtoTRAK SLX CNC Safety, Installation, Service & Parts List Manual
6.1.3 Troubleshooting the Indexer
The following fault messages will appear on the screen when there is a problem with the
indexer. There are also LED's in the black box on top of the chip guard that may be
helpful when troubleshooting the indexer. Please refer to that section below.
Fault 85 – Impossible Tool Position
This message will appear if the indexer goes to a tool number that you did not select.
For example, the operator chose Tool 2 and the indexer went to Tool Station 6. To
fix this problem, re-initialize the system by choosing Service Code 147. If this does
not solve the problem, refer to the LED troubleshooting section.
Fault 86 – Indexer Power Problem
This message will appear if the power is interrupted to the indexer. It could indicate
that no power or low power is getting to the indexer. The black box on top of the
chip enclosure receives 115V power from the main electrical cabinet and sends it to
the white box. From there it is reduced to 24V by a power supply in the black box
and reduced to12V in the white box by a transformer. If there is a power problem
you will need to back track to find out where the power is being interrupted. If
voltage drops outside of the 20–28 volts range in the black box this message could
also appear. To make sure power is getting to the white box verify that the green
light on the side of the box is illuminated. If it is not, check the fuse next to the
light.
Fault 87 – Indexer Air Pressure Problem
This message will appear if the air pressure sensor senses low air or no air pressure.
The recommended air pressure for the indexer is 552 kPa (80 PSI). The air pressure
should be at least 483 kPa (70 PSI) and no more than 1034 kPa (150 PSI) for the
indexer to work correctly.
Do not exceed 1034 kPa (150 PSI). This will void
the warranty on the indexer.
Check to make sure the air regulator is set to at
least 552 kPa (80psi).
Fault 88 – Indexer Not Initialized
This message will appear if the indexer does not know its present position. An
example of this would be if the turret stops in the middle of a tool change. An
interruption of power or air may cause this fault. Pressing the E-stop button can also
cause this problem if the tool is not in a known position. Initialize with Service Code
147.
Fault 89 – Indexer Time Out
This message appears if the indexer does not get to position after a few seconds.
This may be caused by an internal problem inside the indexer such as a broken gear
or jammed component. Very low air pressure may also cause this fault. It should
take no longer than 2 or 3 seconds for the indexer.
6.1.4 Troubleshooting from LED's in Black Box
Inside the black box, which is mounted on top of the chip enclosure, there is an LED that
signifies indexer position. It reads numbers from 1 to 8. There are also directional LED's
to signify how far and in what direction the indexer is told to rotate by the control.
Remove the lid from the box in order to see the LED's. The number in the black box
should correspond to the tool number of the indexer. If these numbers are different, re-
initialize the indexer with Service Code 147. The directional LED's will be helpful in
verifying that the command from the control is getting to the black box and to the
indexer. If the command is getting to the black box but not the indexer, there is a
problem with the indexer. For example, if you command the indexer to move from Tool
1 to Tool 3 the LED for -90° should light up for a second. When facing the indexer, the
rotation of the turret in a CW direction signifies a negative move and a CCW move
signifies a positive move. Since the indexer takes the shortest path between tool
changes, it can only move 45, 90, 135 in the positive direction, and 45, 90, 135 in the
negative direction.
