July 2010 24 – 409
24.5 Deselecting and Disconnecting the Portable Handwheel
You have found that an a portable handwheel is defective and must be exchanged or repaired.
The customer can deselect the handwheel to be able to continue work without it.
8 Switch off the machine.
8 Unscrew the handwheel from the handwheel adapter at the console.
8 Screw the dummy plug onto the handwheel adapter.
8 Switch on the machine.
8 Do not acknowledge the Power interrupted message, but call the machine parameter list.
8 Enter the value 0 (no handwheel) in machine parameter MP7640.
8 Exit the machine parameter list.
8 Switch on the machine and perform functional testing.
Dummy plug The dummy plug for the handwheel adapter can be purchased from the machine manufacturer
or from HEIDENHAIN (ID 271958-03).
The EMERGENCY STOP button on the handwheel is serially connected into the
EMERGENCY STOP chain.
The dummy plug bridges the missing handwheel in the EMERGENCY STOP chain.
When you connect a new or repaired handwheel to the machine:
You must absolutely check, whether the EMERGENCY STOP button on the
handwheel functions properly!
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