The work light will come on automatically when the machine is powered up.
You can turn the light off and on by pressing the Aux7 key on the jog panel.
You can insert and remove tools by hand when needed, using the tool release pushbutton on the ATC box next to the head of the machine.
To perform an automatic tool change use the M6 code, either in a program or at the MDI prompt.
E.g.
M6 T9
will put away whatever tool is in the spindle and will load tool #9.
You can also change tools using the F7/ATC option on the Setup, Offset Library, and Tool Library screens. On those screens, press F7/ATC; enter the tool number you wish to load; and press CYCLE START.
There are 200 tool entries available in the control's Tool and Offset Libraries. There are 24 stations ("bins") available in the machine's tool carousel. You can assign carousel bin numbers, from 1 to 24, to any tools in the Tool Library (F1/Setup, F2/Tool, F2/Tools).
For example, if you specify that tool 52 is in carousel bin 12, then when your program calls for T52, the machine will load the tool from bin 12.
You can assign more than one tool to a carousel bin.
You cannot change the bin assignment for the tool that is presently in the spindle. If this is necessary, put it away first by using M6 with a different tool number. Once the tool is back in the carousel you can change its bin assignment (and move it by hand). If you wish, you can manually remove the tool from the spindle before telling the control to put it away in the carousel and load a new tool. This will leave the carousel bin empty.
As the machine runs and changes tools, it will always put away the old tool in whatever carousel bin the new tool came out of. The control will automatically change the tool's bin assignment to reflect its new location.
When you call for a tool change, the control will retrieve the tool from whatever bin it is currently in.
In a program, you can pre-stage tools using the M107 code. This allows the tool carousel to rotate to the next tool in the job while the preceding tool is still cutting. E.g.
M107 T21
will rotate to tool #21 while the current tool is working.
You can also save a little time by inserting an M17 code at the end of a tool's final cut, just before the tool change. M17 will shut off the spindle and coolant, then start the spindle orientation process.
For example, using both M17 and M107:
M6 T1M107 T2
M3 S2000
G0 X-1 Y0 Z.1 G43 H1
G1 ...
...
M17
M6 T2
M107 T3
M3 S1400
G0 X0 Y-1 Z.1 G43 H2
G81 ...
...
... G80
M17
M6 T3
M3 S2500
G0 X0 Y0 Z.1 G43 H3
...
G49 M25
Intercon will do these things automatically when it posts programs on the control. The above hints are useful when you are hand-writing G code programs or configuring offline CAD/CAM software.
When no tool change or other automatic cycle is in progress, you can manually jog the tool carousel forward and back using the "Tool Index +" and "Tool Index -" keys on the console (Aux9 and Aux8).
In rare cases it may be necessary to operate the tool changer manually. You can do this with the Aux keys on the jog panel, but only in "Maintenance" Mode. For Maintenance Mode, set Machine Parameter 177 to a value of 2.0. Set Parameter 177 back to 0.0 as soon as you are done, to restore normal operation.
There are no safety interlocks in Maintenance Mode. You must be careful, among other things, to:
To put the Z axis at the G30 position, press F3 for the MDI prompt and enter:
G91 G30 Z0
To orient the spindle, press F3 for the MDI prompt and enter:
M19
To open the tool clamp, cancel the MDI prompt, then press and hold the red tool release button.
In maintenance mode, the Aux keys on the jog panel have the following functions:
 |
(none) |  |
Arm to 0° |  |
Arm to 60° |
 |
Pot Up |  |
Arm CW 180° |  |
Arm CCW 180° |
 |
Pot Down | Index - (Aux8) |
Carousel Reverse | Index + (Aux9) |
Carousel Forward |
| (Aux11) | Arm Up | Aux12 | Arm Down |
Aux11 and Aux12 are the blank blue keys to the right of the Coolant control keys.
In maintenance mode, the LED indicators in the Aux keys show the present position of the ATC arm and pot, according to the sensors.
If you have any doubt about whether the tool changer is in a known state (for example, if a fault occurred during a tool change), you should use the above Maintenance Mode controls to establish the following conditions:
Then use the F3/MDI prompt to enter:
M18
and press CYCLE START. This will reset the tool changer to the above conditions. The "tool in spindle" display on the CNC screen may be incorrect until the next tool change.
When rotating the carousel in Maintenance Mode, note that the Tool Index - and + keys (Aux8 and Aux9) run the carousel motor as long as you hold the key down, and stop the motor as soon as you release the key. You must watch the carousel rotation and wait until movement pauses (as it does at each tool station) before releasing the key.
This is different from the normal (non-Maintenance Mode) operation of the Tool Index keys. In normal operation, you press and release the key, and the carousel will move one position and stop. In normal operation the PLC will ensure that the carousel stops with the station centered.
The following items should be done on a weekly basis:
Most spindle drive parameters are set to factory defaults.
The following parameters are set to values other than factory defaults:
Parameter |
Value |
Meaning |
Pr. 00-04 |
21 |
Display PG position in user status display |
Pr. 00-10 |
3 |
FOC+PG control mode |
Pr. 00-20 |
2 |
Frequency command from analog input |
Pr. 00-21 |
1 |
Operation command from terminals |
Pr. 01-00 |
120 Hz |
Maximum output frequency |
Pr. 01-12 |
4 sec |
Acceleration time |
Pr. 01-13 |
4 sec |
Deceleration time |
Pr. 02-04 |
35 |
Terminal MI4 enables position control (orient) |
Pr. 02-05 |
5 |
Terminal MI5 is fault reset |
Pr. 02-11 |
11 |
Relay #1 is fault output |
Pr. 02-12 |
39 |
Relay #2 is in-position output (orient complete) |
Pr. 02-14 |
34 |
Terminal MO2 is zero-speed output |
Pr. 03-00 |
1 |
Terminal AVI is frequency reference |
Pr. 10-00 |
1024 |
Encoder cycles per revolution |
Pr. 10-01 |
1 |
Encoder input: A leads B in forward rotation |
Pr. 10-19 |
0482 |
Spindle orient position* |
*If the spindle drive belt or the spindle encoder is ever removed and reinstalled, then the orient position will need to be updated. Press MODE twice to display the encoder (pulse generator) position; turn the spindle to the desired orient position; note the displayed value; and enter it into Pr. 10-19.
Note that the spindle encoder is on the motor, not the spindle, and that there is a 2:3 belt ratio between the motor and the spindle. Therefore one turn of the motor is 1½ turns of the spindle and tool. One consequence of this is that, when the spindle orients for a tool change, it may be in either of two positions, 180° apart. This does not present a problem for the tool changer, since the tool holders will fit either way. However, it does mean that the G76 fine boring cycle and rigid "peck" tapping may not be used on this machine. One-shot rigid tapping may be used.
The spindle drive will see 4096 encoder counts per turn of the motor (see Pr. 10-00 above), but the control will only see 2731 counts per turn of the spindle (see Centroid Parameter 34).
See the Delta VFD-VE User's Manual for detailed information on these and other spindle drive parameters.
The PLC program can generate various fault messages, in addition to those listed in the Centroid operator's manual.
You can use the PLC Diagnostic display on the console to view some of the Centroid PLC input and memory locations mentioned with these fault conditions. At the control's main screen, press Alt-I to activate the PLC Diagnostic display. Press Alt-I again to dismiss it.
The Diagnostic display shows four rows of red and green dots: the first row shows PLC inputs 1 through 80; the second row PLC outputs 1 through 80; the third row PLC memory bits 1 through 80; and the fourth row PLC program stages 1 through 80.
You can use the arrow keys to move a highlight box over any of these locations. The name of the highlighted location will be displayed at the bottom left.
Below the four rows of bit status information are twelve numeric ("word") variable values, labeled W1 through W12. Some of these variables also hold useful status information, described with the fault conditions to follow.
Most errors and faults can be defeated by setting Machine Parameter 177 to a value of 1.0. Use this capability with extreme caution, as it allows you to operate the machine with potentially dangerous conditions present. Set Parameter 177 back to 0.0 immediately after you are done testing or troubleshooting.
During a CNC job, with no tool change in progress, the PLC detected the tool clamp (drawbar) out of position: the unclamped switch LS10 on the drawbar was closed, when it should have been open.
Investigate possible causes. Press Emergency Stop to clear the fault.
References:
PLC INP19: indicates LS10 state: Green = 0 = closed = tool unclamped; Red = 1 = tool not unclamped Schematic: Line 83
During a CNC job, with no tool change in progress, the PLC detected the tool clamp (drawbar) out of position: the clamped switch LS9 on the drawbar was open, when it should have been closed.
Investigate possible causes. Press Emergency Stop to clear the fault.
References:
PLC INP18: indicates LS9 state: Green = 0 = closed = tool clamped; Red = 1 = tool not clamped Schematic: Line 83
During a CNC job, with no tool change in progress, the PLC detected the tool pot out of position: the pot-down switch LS8 was closed, when it should have been open.
Investigate possible causes. Press Emergency Stop to clear the fault.
References:
PLC INP21: indicates LS8 state: Green = 0 = closed = pot down; Red = 1 = pot not down Schematic: Line 84
During a CNC job, with no tool change in progress, the PLC detected the tool pot out of position: the pot-up switch LS7 was open, when it should have been closed.
Investigate possible causes. Press Emergency Stop to clear the fault.
References:
PLC INP20: indicates LS7 state: Green = 0 = closed = pot up; Red = 1 = pot not up Schematic: Line 84
During a CNC job, with no tool change or carousel rotation in progress, the PLC detected the carousel or tool counter sensor out of position: both carousel sensors were closed, when they should have been open.
Investigate possible causes. Press Emergency Stop to clear the fault.
References:
PLC INP30: indicates CTR.A state: Green = 0 = closed = sensing; Red = 1 = open = not sensing PLC INP31: indicates CTR.B state: Green = 0 = closed = sensing; Red = 1 = open = not sensing PLC MEM25: combined state: Green = 1 = either sensor open; Red = 0 = both sensors closed Schematic: Line 89
At the start of an automatic tool change, the PLC detected an out-of-sequence acknowledge from the CNC program, indicating Z axis positioning was complete when such positioning had not yet been requested.
References:
PLC MEM69: Z move request from PLC to CNC: Green = 1 = on; Red = 0 = off PLC INP40: Z acknowledge from CNC to PLC: Green = 1 = on; Red = 0 = off
During an automatic tool change, the PLC requested that the control move the Z axis to the carousel position and confirm in-position. The control did not confirm that movement within a reasonable length of time.
References:
PLC MEM69: Z move request from PLC to CNC: Green = 1 = on; Red = 0 = off PLC INP40: Z acknowledge from CNC to PLC: Green = 1 = on; Red = 0 = off
During an automatic tool change, the PLC requested that the spindle drive orient the spindle and report completion. The spindle drive did not provide an orient-complete signal within a reasonable length of time.
References:
PLC OUT29: Orient request from PLC to spindle drive: Green = 1 = on; Red = 0 = off PLC INP14: Orient complete signal from spindle drive to PLC: Green = 0 = on; Red = 1 = off Schematic: Lines 4, 6, 81, 112
During an automatic tool change, the PLC attempted to swing the tool pot down, but did not see the pot-down switch close within a reasonable length of time.
References:
PLC OUT34: Pot-down solenoid SOL5: Green = 1 = on; Red = 0 = off PLC INP21: Pot-down switch LS8: Green = 0 = down; Red = 1 = not down Schematic: Lines 84, 117
During an automatic tool change, while waiting for the tool pot to swing down, the PLC saw that the spindle-oriented signal from the spindle drive was lost, indicating possible loss of the orient position..
References:
PLC OUT29: Orient request from PLC to spindle drive: Green = 1 = on; Red = 0 = off PLC INP14: Orient complete signal from spindle drive to PLC: Green = 0 = on; Red = 1 = off Schematic: Lines 4, 6, 81, 112
During an automatic tool change, the PLC attempted to rotate the arm 60° to grip the tools, but did not see the arm 60° switch close within a reasonable length of time. This rotation is achieved by extending the upper rack.
References:
PLC OUT38: Arm 60° solenoid SOL8: Green = 1 = on; Red = 0 = off PLC INP23: Arm 60° switch LS1: Green = 0 = arm at 60°; Red = 1 = arm not at 60° Schematic: Lines 85, 124
During an automatic tool change, the PLC attempted to unclamp the drawbar to release the tool, but did not see the tool-unclamped switch close within a reasonable length of time.
References:
PLC OUT38: Tool unclamp solenoid SOL18: Green = 1 = on; Red = 0 = off PLC INP19: Tool unclamped switch LS10: Green = 0 = unclamped; Red = 1 = not unclamped Schematic: Lines 83, 122
During an automatic tool change, the PLC attempted to release the drawbar to clamp the tool, but did not see the tool-clamped switch close within a reasonable length of time.
References:
PLC OUT38: Tool unclamp solenoid SOL18: Green = 1 = on = unclamp; Red = 0 = off = clamp PLC INP18: Tool clamped switch LS9: Green = 0 = clamped; Red = 1 = not clamped Schematic: Lines 83, 122
During an automatic tool change, the PLC attempted to rotate the arm 60° CCW to release the tools, but did not see the arm 0° switch close within a reasonable length of time. This rotation is achieved by retracting the upper rack. This error can also appear if the lower (180°) rack fails to retract to the CW position at the same time as the upper rack.
References:
PLC OUT37: Arm 0° solenoid SOL9: Green = 1 = on; Red = 0 = off PLC OUT61: Arm CW 180° solenoid SOL6: Green = 1 = on; Red = 0 = off PLC INP22: Arm 0° switch LS2: Green = 0 = arm at 0°; Red = 1 = arm not at 0° PLC INP27: Arm CW 180° switch LS3: Green = 0 = arm CW; Red = 1 = arm not CW Schematic: Lines 85, 87, 123, 128
During an automatic tool change, the PLC attempted to swing the tool pot up, but did not see the pot-up switch close within a reasonable length of time.
References:
PLC OUT33: Pot-up solenoid SOL4: Green = 1 = on; Red = 0 = off PLC INP20: Pot-up switch LS7: Green = 0 = up; Red = 1 = not up Schematic: Lines 84, 116
At the end of an automatic tool change, the PLC reported completion to the CNC program, but the CNC program did not remove the M6 tool change request within a reasonable length of time.
References:
PLC INP38: M6 request from CNC to PLC: Green = 1 = on; Red = 0 = off PLC MEM70: Completion signal from PLC to CNC: Green = 1 = on; Red = 0 = off
The CNC program was cancelled while an automatic tool change was in progress.
Before resuming operation you should check the tool changer arm and carousel positions, and check the tool in the spindle. Use Maintenance Mode and the M18 code if necessary to reset the tool changer system.
During tool carousel rotation, the tool counter sensors closed prematurely (before the carousel should have had time to actually rotate out of the previous tool station). This may indicate a faulty or loose connection, out-of-position sensor, or electrical interference.
Investigate possible causes. Press Emergency Stop to clear the fault.
References:
PLC INP30: indicates CTR.A state: Green = 0 = closed = sensing; Red = 1 = open = not sensing PLC INP31: indicates CTR.B state: Green = 0 = closed = sensing; Red = 1 = open = not sensing PLC MEM25: combined state: Green = 1 = either sensor open; Red = 0 = both sensors closed Schematic: Line 89
During carousel rotation, the tool counter sensors did not close within a reasonable length of time, to indicate that the carousel had moved out of the previous tool station and was between stations. This may be because the carousel did not rotate at all, or because of faulty or out-of-position sensors.
References:
PLC OUT31: carousel motor enable: Green = 1 = on; Red = 0 = off PLC OUT32: carousel motor direction (if enabled): Green = 1 = CCW; Red = 0 = CW PLC INP30: indicates CTR.A state: Green = 0 = closed = sensing; Red = 1 = open = not sensing PLC INP31: indicates CTR.B state: Green = 0 = closed = sensing; Red = 1 = open = not sensing PLC MEM25: combined state: Green = 1 = either sensor open; Red = 0 = both sensors closed Schematic: Lines 89, 114, 115
During carousel rotation, the PLC saw the tool pot sensors did not indicate that the pot was safely up. This may indicate faulty or out-of-position sensors, faulty connections, or a hydraulic problem that prevented the pot from staying up.
References:
PLC OUT33: Pot-up solenoid SOL4: Green = 1 = on; Red = 0 = off PLC OUT34: Pot-down solenoid SOL5: Green = 1 = on; Red = 0 = off PLC INP20: Pot-up switch LS7: Green = 0 = up; Red = 1 = not up PLC INP21: Pot-down switch LS8: Green = 0 = down; Red = 1 = not down Schematic: Lines 84, 116, 117
During tool carousel rotation, one or both of the tool counter sensors opened prematurely (before the carousel should have had time to actually rotate into the next tool station). This may indicate a faulty or loose connection, out-of-position sensor, or electrical interference.
Investigate possible causes. Press Emergency Stop to clear the fault.
References:
PLC INP30: indicates CTR.A state: Green = 0 = closed = sensing; Red = 1 = open = not sensing PLC INP31: indicates CTR.B state: Green = 0 = closed = sensing; Red = 1 = open = not sensing PLC MEM25: combined state: Green = 1 = either sensor open; Red = 0 = both sensors closed Schematic: Line 89
During carousel rotation, the tool counter sensors did not open within a reasonable length of time, to indicate that the carousel had arrived at the next station. This may be because the carousel stopped rotating while between stations, or because of faulty or out-of-position sensors.
References:
PLC OUT31: carousel motor enable: Green = 1 = on; Red = 0 = off PLC OUT32: carousel motor direction (if enabled): Green = 1 = CCW; Red = 0 = CW PLC INP30: indicates CTR.A state: Green = 0 = closed = sensing; Red = 1 = open = not sensing PLC INP31: indicates CTR.B state: Green = 0 = closed = sensing; Red = 1 = open = not sensing PLC MEM25: combined state: Green = 1 = either sensor open; Red = 0 = both sensors closed Schematic: Lines 89, 114, 115
During carousel rotation, the PLC saw the tool pot sensors did not indicate that the pot was safely up. This may indicate faulty or out-of-position sensors, faulty connections, or a hydraulic problem that prevented the pot from staying up.
References:
PLC OUT33: Pot-up solenoid SOL4: Green = 1 = on; Red = 0 = off PLC OUT34: Pot-down solenoid SOL5: Green = 1 = on; Red = 0 = off PLC INP20: Pot-up switch LS7: Green = 0 = up; Red = 1 = not up PLC INP21: Pot-down switch LS8: Green = 0 = down; Red = 1 = not down Schematic: Lines 84, 116, 117
The Centroid PLC interpreter software has encountered an error while processing the PLC logic. Notify your Centroid dealer and service technician.
References:
PLC W8: indicates numeric fault code
The CNC program was cancelled during an M19 spindle orientation, before the orientation could complete.
Press and release Emergency Stop to clear the error.
While holding the spindle in orient after an M19, the PLC saw that the orient-complete signal from the spindle drive turned off, indicating that the spindle was no longer being held in position. This could be because the spindle drive was unable to hold orient for some reason; because of a faulty orient command signal wire from the PLC to the spindle drive; or because of a faulty orient complete signal wire from the spindle drive to the PLC.
References:
PLC OUT29: Orient command to spindle drive: Green = 1 = on; Red = 0 = off PLC INP14: Orient-complete signal from spindle drive: Green = 0 = complete; Red = 1 = not complete Schematic: Lines 4, 6, 81, 112
During an automatic tool change, the PLC attempted to extend the arm to pull the tools out of the spindle and pot, but did not see the arm-down switch close within a reasonable length of time.
References:
PLC OUT60: Arm-down solenoid SOL11: Green = 1 = on; Red = 0 = off PLC INP25: Arm-down switch LS6: Green = 0 = arm down; Red = 1 = arm not down Schematic: Lines 86, 127
During an automatic tool change, the PLC attempted to rotate the arm CW 180° to swap the tools, but did not see the arm CW 180° switch close within a reasonable length of time. This rotation is achieved by extending the lower rack.
References:
PLC OUT61: Arm CW 180° solenoid SOL6: Green = 1 = on; Red = 0 = off PLC INP26: Arm CW 180° switch LS3: Green = 0 = arm CW 180°; Red = 1 = arm not CW 180° Schematic: Lines 87, 128
During an automatic tool change, the PLC attempted to retract the arm to press the tools into the spindle and pot, but did not see the arm-up switch close within a reasonable length of time.
References:
PLC OUT59: Arm-up solenoid SOL10: Green = 1 = on; Red = 0 = off PLC INP24: Arm-up switch LS5: Green = 0 = arm up; Red = 1 = arm not up Schematic: Lines 86, 126
During an automatic tool change, while the PLC was attempting to extend the arm to pull the tools out of the spindle and pot, it saw the tool-unclamped switch change to indicate the drawbar was no longer unclamped.
References:
PLC OUT38: Tool unclamp solenoid SOL18: Green = 1 = on; Red = 0 = off PLC INP18: Tool clamped switch LS9: Green = 0 = clamped; Red = 1 = not clamped PLC INP19: Tool unclamped switch LS10: Green = 0 = unclamped; Red = 1 = not unclamped Schematic: Lines 83, 122
During an automatic tool change, while the PLC was attempting to rotate the arm 180° to swap the tools, it saw the tool-unclamped switch change to indicate the drawbar was no longer unclamped.
References:
PLC OUT38: Tool unclamp solenoid SOL18: Green = 1 = on; Red = 0 = off PLC INP18: Tool clamped switch LS9: Green = 0 = clamped; Red = 1 = not clamped PLC INP19: Tool unclamped switch LS10: Green = 0 = unclamped; Red = 1 = not unclamped Schematic: Lines 83, 122
During an automatic tool change, while the PLC was attempting to retract the arm to press the tools into the spindle and pot, it saw the tool-unclamped switch change to indicate the drawbar was no longer unclamped.
References:
PLC OUT38: Tool unclamp solenoid SOL18: Green = 1 = on; Red = 0 = off PLC INP18: Tool clamped switch LS9: Green = 0 = clamped; Red = 1 = not clamped PLC INP19: Tool unclamped switch LS10: Green = 0 = unclamped; Red = 1 = not unclamped Schematic: Lines 83, 122
Overload relay OL1 on the hydraulic pump starter MS1 has tripped.
This is probably due to overload of the hydraulic pump. However, since power for the lube unit is also tapped off the load side of MS1, it is also possible for a problem with the lube system to trigger this error.
Investigate possible causes. Press the reset button on the overload relay to reset the unit. Press Emergency Stop to clear the fault.
References:
PLC INP7: indicates OL1 state: Green = 0 = okay; Red = 1 = tripped Schematic: Lines 29, 78
Overload relay OL2 on the coolant pump starter MS2 has tripped.
This is probably due to overload of the coolant pump.
Investigate possible causes. Press the reset button on the overload relay to reset the unit. Press Emergency Stop to clear the fault.
References:
PLC INP8: indicates OL2 state: Green = 0 = okay; Red = 1 = tripped Schematic: Lines 34, 78
During a CNC job, with no tool change in progress, the PLC detected the tool changer arm out of position: the 0° switch LS2 on the upper rack was open, when it should have been closed.
If the arm is indeed out of position, use the Maintenance Mode controls to return it to its correct parked position. If the arm is in position, check the sensor switch and its wiring.
References:
PLC INP22: indicates LS2 state: Green = 0 = closed; Red = 1 = open Schematic: Line 85
During a CNC job, with no tool change in progress, the PLC detected the tool changer arm out of position: the 60° switch LS1 on the upper rack was closed, when it should have been open.
If the arm is indeed out of position, use the Maintenance Mode controls to return it to its correct parked position. If the arm is in position, check the sensor switch and its wiring.
References:
PLC INP23: indicates LS1 state: Green = 0 = closed; Red = 1 = open Schematic: Line 85
During a CNC job, with no tool change in progress, the PLC detected the tool changer arm out of position: the arm-up switch LS5 was open, when it should have been closed.
If the arm is indeed out of position, use the Maintenance Mode controls to return it to its correct parked position. If the arm is in position, check the sensor switch and its wiring.
References:
PLC INP24: indicates LS5 state: Green = 0 = closed; Red = 1 = open Schematic: Line 86
During a CNC job, with no tool change in progress, the PLC detected the tool changer arm out of position: the arm-down switch LS6 was closed, when it should have been open.
If the arm is indeed out of position, use the Maintenance Mode controls to return it to its correct parked position. If the arm is in position, check the sensor switch and its wiring.
References:
PLC INP25: indicates LS6 state: Green = 0 = closed; Red = 1 = open Schematic: Line 86
During a CNC job, with no tool change in progress, the PLC detected the tool changer arm out of position: the CW 180° switch LS3 on the lower rack was open, when it should have been closed.
If the arm or rack is indeed out of position, use the Maintenance Mode controls to return it to its correct parked position. If the arm is in position, check the sensor switch and its wiring.
Note that, with the arm up, the lower rack can move freely without rotating the arm. However, when the tool changer is idle, the rack must be returned to the CW position (rack retracted).
References:
PLC INP26: indicates LS3 state: Green = 0 = closed; Red = 1 = open Schematic: Line 87
During a CNC job, with no tool change in progress, the PLC detected the tool changer arm out of position: the CCW 180° switch LS4 on the lower rack was closed, when it should have been open.
If the arm or rack is indeed out of position, use the Maintenance Mode controls to return it to its correct parked position. If the arm is in position, check the sensor switch and its wiring.
Note that, with the arm up, the lower rack can move freely without rotating the arm. However, when the tool changer is idle, the rack must be returned to the CW position (rack retracted).
References:
PLC INP27: indicates LS4 state: Green = 0 = closed; Red = 1 = open Schematic: Line 87
The PLC program can also generate the following non-error messages, in addition to those listed in the Centroid operator's manual.
A previous fault condition has been cleared by pressing Emergency Stop.
An M3 or M4 request to start the spindle has been received, but the spindle is in Manual control mode. The PLC has activated Feed Hold.
Press the Spindle Man/Auto button to return to Auto control mode, then press CYCLE START.
An M7 or M8 request to start coolant has been received, but the coolant is in Manual control mode. The PLC has activated Feed Hold.
Press the Coolant Man/Auto button to return to Auto control mode, then press CYCLE START.
If you are dry-running a job and do not wish to run the coolant, you can ignore this warning and press CYCLE START to proceed without coolant.
