Checking The Global Drive Enable I32, Connector X42 / Pin 33 - HEIDENHAIN iTNC 530 Service Manual

19.2.2 Checking the Global Drive Enable I32, Connector X42 / pin 33

If you can switch on the machine but cannot move with a digital axis/spindle, check the
following:
May 2006
Checking I32
Switch the control on as far as possible.
Check the status of the
Drive enabling (-NE2) in the
Drive diagnostics window
(or check in the PLC TABLE, whether
I32 is set).
Acknowledgment present
(green indicator or
I32 = 1) ?
No
+ 24 V available at X42/PIN33?
No
The conditions for drive enabling
are not fulfilled (door contacts,
permissive keys etc.)
Use the circuit diagram of the machine
to check the contacts, relays, wiring, etc.
The control records the
acknowledgment! If, however, you
still cannot operate the digital
axes/spindle, please call your
machine tool builder or HEIDENHAIN!
Yes
NC-STOP signal pending?
(marker 4560 = 0)?
Find the reason (e.g. break between
NC-STOP button and control or
stuck NC-STOP button) and
correct the error.
Yes
The PLC does not detect the high
level. Probably the input I32 on the
MC is defective. -> Replace the MC!
No
Is an
Yes
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