20Ap1:4 Temperature Monitoring - ESAB Aristo Mig 3001i Service Manual

One end of the CAN bus is in the power source and it must be fitted with a
terminating resistor, R28 in the circuit diagram on page 28. The terminating
resistor can be disconnected by removing the jumper from terminal D.
Terminal D, version 2 of 20AP1 Terminal D, version 1 of 20AP1
See page 61 for examples on how to connect the terminating resistors in
different equipment configurations.
20AP1:4 Temperature monitoring
Principle diagram of the temperature monitoring circuits
The temperature monitoring circuit operates when the temperature exceeds
110 _C and resets at 50 _C
NTC D1 and NTC D2 are fitted inside the diode modules D1 and D2.
NTC R28 is fitted on the cupper foil of circuit board 15AP2.
NTC IC3 and NTC IC8 are fitted inside the IGBT modules IC3 and IC8.
If the monitoring circuit operates, the power source is stopped and fault code 6
is displayed. The power source cannot be restarted until it has cooled
sufficiently.
S0740 800 196/E101019/P76
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