Service Manual TNC 407 / TNC 415 - heidenhain - DR. JOHANNES ...
Service Manual TNC 407 / TNC 415 - heidenhain - DR. JOHANNES ...
Service Manual TNC 407 / TNC 415 - heidenhain - DR. JOHANNES ...
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HEIDENHAIN<br />
<strong>DR</strong> .Jcltf~NNES HEIDENHAIN Grnlx-l<br />
D-83292 Traunreut ‘5% (08669) 31-O<br />
SERVICE MANUAL <strong>TNC</strong> <strong>407</strong>/<strong>415</strong><br />
Issue: 01.09.1995<br />
Kundendienst Page 83<br />
17.4 Output “Control Ready for Operation” and<br />
Acknowledgement for Test “Control Ready for Operation”<br />
Important functions are monitored by the <strong>TNC</strong> <strong>407</strong>/<strong>415</strong> by way of a self-diagnosis system (electronic<br />
assemblies such as the micro-processor, the ROM, read/write memory, positioning systems, encoders etc.)<br />
If an error is detected, a blinking error message is displayed in plain language in the dialog line. As soon as<br />
this error is displayed, the output “Control Ready for Operation” becomes inactive.<br />
The output “Control Ready for Operation” is available via the connectors X41/X43 of the LE and on the terminal<br />
X3 /pin 10 of the I/O board PL 400. If the error cause has been eliminated, this state can be cancelled by<br />
switching off the main switch or pressing m.<br />
The output “Control Ready for Operation” is to switch off the control voltage of +24V in the machine tool<br />
interface. Since this is an important safety function, the switch-off function of the output “Control Ready<br />
for Operation” is tested via the input “Acknowledgement Control Ready for Operation” every time the<br />
control is switched on.<br />
The <strong>TNC</strong> <strong>407</strong> features a monitoring function that is tested when the machine tool is switched on.<br />
The <strong>TNC</strong> <strong>415</strong> comprises 3 monitoring systems (main processor, geometry processor and CLP processor)<br />
that are also tested when the machine tool is switched on.<br />
If the +24V at the input “Acknowledgement Control Ready for Operation” are missing during the test routine<br />
when the control is switched on, the error message “RELAY EXT. DC VOLTAGE MISSING” is generated.<br />
If however, the acknowledgement is switched off too late for not switched off at all) after switch-off of the<br />
output, the blinking error message “EMERGENCY STOP DEFECTIVE” is displayed. This error message is<br />
also generated, if the power supply of the PLC part is missing (power supply of the PLC part: see section 8.6).<br />
If the control detects an error during the switch-on test routine, a bridge can be inserted between the outputs<br />
“Control Ready for Operation” and “Acknowledge Control Ready for Operation” (disconnect the wires) in order<br />
to determine whether the defect is due to the control or to the interface. If the error is still present after<br />
inserting the bridge and with correct power supply of the PLC part, the defect is located in the logic unit.<br />
If however, the error does not occur any longer after the bridge has been inserted, the interface is defective.<br />
Note:<br />
Do not forget to remove the bridge and to install the standard operating state after the test