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Technical Manual TNC 360 - heidenhain - DR. JOHANNES ...

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5.1 Connection diagram<br />

Under fault conditions the "control is ready" output should switch off the 24-volt supply. Because of<br />

the enormous importance of this function this output is tested by the control every time the mains<br />

power is switched on.<br />

HEIDENHAIN recommends the following wiring:<br />

This diagram represents a proposal for circuitry. The machine tool builder is responsible for<br />

complying with applicable safety regulations.<br />

EMERGENCY STOP<br />

buttons<br />

Control<br />

voltage<br />

on<br />

Logic unit<br />

After control voltage is switched on, the switch is opened<br />

by each microprocessor for a short time.<br />

X21/34 X24/2 X24/1 X22/4<br />

"Control<br />

is ready"<br />

k1<br />

K1<br />

24V cannot<br />

be switched<br />

off<br />

+ -<br />

24 V<br />

PLC<br />

24V can be<br />

switched off Acknowledgement<br />

"Control is ready"<br />

8/95 <strong>TNC</strong> <strong>360</strong> 5 EMERGENCY STOP Routine 4-107<br />

k1

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