ESAB Aristotig 405 AC/DC, Service Manual

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SIGNAL DESCRIPTION X4
Control bus to inverter X1 from A8, to X4 from A2-1
Pin
No.
Signal
Source
Level Description
1 A8 +15 V Error: thermal overload of power stage, low active
2 A8 +15 V Error: mains overvoltage, low active
3 A8 +15 V Error: mains undervoltage, low active
4 A8 +15 V Error: primary overcurrent, shut down of power stage, low active
5 A8 +15 V Error: error interrupt (group fault), low active
6 A8 +15 V I>0, high active
7 GND GND Logic Ground
8 A8 0-10 V Current value (Strom Istwert)
9 A2 0-10 V Current set value (Strom Solllwert)
10 A2 +15 V Start / Stop of power stage
11 A2 0-10 V AC welding current frequency
12 A2 0-10 V AC welding current balance
13 A2 +15 V DC mode / AC mode (high active for AC)
14 A2 +15 V Positive polarity for DC in MMA mode, high active
15 A2 +15 V Positive polarity start-up time for AC mode, low active
16 Not relevant for the DTG 405
17 Not relevant for the DTG 405
18 Not relevant for the DTG 405
19 A2 +5 V address Bit 1 for AC current wave shape
20 A2 +5 V address Bit 2 for AC current wave shape
21 A2 +5 V address Bit 3 for AC current wave shape
22 Not relevant for the DTG 405
23 Not relevant for the DTG 405
24 Not relevant for the DTG 405
25 A2 +15 V MMA mode low active / TIG mode high active
26 A8 +15 V 3-phase mains supply identification, high active