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

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

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X24 power supply for the PLC at the LE<br />

Pin Number Assignment<br />

1 + 24 Vdc switched off by EMERGENCY STOP<br />

2 + 24 Vdc not switched off by EMERGENCY STOP<br />

3 0 V<br />

Danger to internal components!<br />

Use only original replacement fuses.<br />

Power supply for the PL 410 B<br />

The PLC outputs are powered in groups.<br />

Terminal Assignment PLC output<br />

X9 0V<br />

X10 +24 V power for logic and for "Control is operational"<br />

X11 +24 V power for outputs O32 to O39<br />

X12 O40 to O47<br />

X13 O48 to O55<br />

X14 O56 to O62<br />

Power supply for the PL 410<br />

Connections as with PL 410 B.<br />

Terminal Assignment<br />

X13 +24 Vdc switched off by EMERGENCY STOP<br />

X12 0 V<br />

X3 Pin 12 + 24 Vdc not switched off by EMERGENCY STOP<br />

4.1.3 Buffer battery<br />

The buffer battery is the potential source for the RAM memory for NC programs, PLC programs<br />

and machine parameters when the control is switched off.<br />

If the ”EXCHANGE BUFFER BATTERY” message appears, the batteries must be exchanged.<br />

The 3 batteries may be found behind a screw cap in the power supply section of the logic unit.<br />

As well as the batteries, the logic unit contains an additional energy store, mounted on the<br />

processor board, for buffering the memory contents.<br />

This means that the mains can be switched off when replacing the batteries. The energy<br />

store will ensure that the memory is retained while the batteries are exchanged.<br />

3-16 <strong>TNC</strong> <strong>360</strong> 4 Power Supply 8/95

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