GS 250L Turret Problems

[mdidrickson]

Hello,

I have a GS 250L Hardinge Lathe and I am getting alarms on the Turret. The alarms are 1001 (Turret Servo Alarm) and 1015 (Turret Not Clamped). The alarms come on when I first turn the machine on. Reset will not clear the alarm, what I have to do to clear the alarm is hit the reset button, the manually activate the spool valve in the back of the machine. This will clear the 1015 alarm. Then I reset breaker QBF4, this will clear the 1001 alarm. When I go to do a tool change, the alarms come up again. At first i was thinking that this was a sticky spool valve, but when I manually activate the spool valve with out hitting reset, it goes back into the same position, so now I am wondering if it is not the electrical valve that sits on top of it.

The machine was manufactured in 2007, any help would be greatly appreciated!

Thank You
Mike

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[Factory Guy]

You probably need to reference the turret and the step by step instructions are written below. If you are familiar with this control, you need to get the turret indexed and clamped on station 12, turn parameter write on, change Keep relay K0.6 to a 1, turn the turret selector switch to station 12, select reference return mode, and hold the turret index button for more than 2 seconds (note: the turret does not index). Turn Keep relay K0.6 back to a 0, turn parameter write off, and you are done. What this does is set the bits in the software to station 12. Then index the turret to make sure the stations are correct.


TURRET ZERO REFERENCE
NOTE: This procedure applies only to non-live tooling machines
The turret zero reference will need to be reset if any of the following events occur:
*The turret controller is replaced.
* The turret index motor is replaced.
* The turret index motor feedback cable is disconnected.
* The turret indexes to the wrong station.
* The turret controller backup battery has expired and the machine has been
powered down for more than 20 minutes.
* Alarm "A 90" is displayed on the turret controller.
1. Power up the machine.
2. Set the Mode Select switch to Manual Data Input mode.
3. Set Parameter Write Enable (PWE) to "1":
A) Press the Offset Setting key.
B) Press the Setting soft key.
C) If necessary, use the Page Up/Down keys to display the Setting page that
contains the Parameter Write field.
D) If necessary, use the cursor keys to move the cursor to the Parameter Write
field.
E) Press the Operator soft key.
F) Press the ON:1 soft key.
4. Set K00, bit 6 to "1":
A) Press the System key.
B) Press the PMCPRM soft key.
C) Press the KEEPRL (Keep Relay) soft key.
D) Move the cursor to K00, bit 6.
E) Key in "1" and press the Input key.
Alarm message 2002 will be displayed
5. Set the Mode Select switch to Reference
mode.
6. Set the Turret Station selector switch "12".
7. Press and hold the Turret Index push button for 2 seconds. The turret will not
index.
8. Set K00, bit 6 to "0". The alarm message will be cleared from the display.
9. Press the Turret Index push button. The turret will index to station 12.
10. Test the turret by setting the Turret Station selector switch to other turret stations
and pressing the Turret Index push button.
11. Set the Mode Select switch to Manual Data Input mode.
12. Set Parameter Write Enable (PWE) to "0".
A) Press the Offset Setting key. The Setting page that contains the Parameter
Write field will be displayed.
B) Press the Operator soft key
C) Press the OFF: 0 soft key.
13. Press the control Reset key.

[armando_lavalle]

You can try replacing teh relay on the relay board, it could be a "sticky" relay