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XYZ Machine Tools
ProTURN SLX 1630 ProtoTRAK SLX CNC Safety, Installation, Service & Parts List Manual
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.
Fault 87 – Indexer Air Pressure Problem
This message will appear if the air pressure sensor jumper is faulty on the black
cable breakout box on top of the lathe.
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.
6.2.4 Troubleshooting the Cable Breakout Box
The following describes the inputs and outputs from the PLC used to run the 4-tool
indexer.
6.2.4.1
PLC Inputs
There are 8 inputs to the PLC, 7 of which are used for the 4-tool indexer. For inputs 1
through 4, the corresponding LED light will be on depending on which tool is in position.
In other words, when the indexer is locked for tool 1, the I1 LED on the PLC will be lit.
For inputs 5, 6 and 7, the LED light for these will only be on for a second or so when a
new command is sent to the PLC from the control. A change of tool in DRO mode or
within a program will cause these lights to come on. See below for which lights will be lit
when changing tools.
I1 = Turret proximity sensor position #1
I2 = Turret proximity sensor position #2
I3 = Turret proximity sensor position #3
I4 = Turret proximity sensor position #4
I5 = Select #1
I6 = Select #2
I7 = Select #3
I8 = not used
I1 - I4 is from the 4-tool indexer - identifies turret position
I5 - I7 is from the control - identifies index command
The 3 select lines gives us 8 possible incremental moves as follows. A few examples
have also been given.
+1 tool (select 1 and 2)
For example, if you command the indexer to
move 1 tool position, like from tool 2 to 3, you will see
the select 1 and 2 lights come on briefly.
+2 tools (select 2)
+3 tools (select1)
For example, if you command the indexer to move 3 tool
positions, like from 1 to 4, you will see the select 1 light
come on briefly.
+4 tools (select 1, 2, and 3) – tool stays where it is
-1 tool (select2 and 3)
