Service manual MinarcTig
Evo
200
Version 1.1.5.
29.9.2015
12
Kemppi Oy
Main transformer PTC and IGBT NTC monitoring circuits. It shuts down the inverter
and information is delivered to microprocessor on the P001 card.
Remote controller and TIG torch control connections. P001 card reads the signals.
3.4.3. A002 spark card
Generates voltage to spark transformer and switches it on and off. Voltage is gener-
ated from the main transformer secondary.
Trimmer R14 can be adjusted to change the voltage between 7,8-14,7kV. A002 card
(both original and spare part card) is factory adjusted and does not need to be re-
adjusted in service.
A002 card is controlled by P001 panel card.
3.4.4. P001 panel card
Microprocessor has many different operations:
o
Controls panel LEDs and 7-segment display.
o
Reads membrane switches and pulse potentiometer.
o
Reads remote controller and TIG torch control signals (via A001).
o
Controls cooling fan, gas valve, spark ignition and PFC operations.
o
Reads over and under voltage watch circuit and over temperature circuit stages.
o
Controls serial bus and saves calibrations data.
Service connector for programming devices like Datamaster 2. Panel processor can
be re-programmed via this connector.
Panel card holds most of the input and output devises to the user, like LEDs, 7-
segment display, and pulse potentiometer.
Connection to membrane panel.
