Page 5 - 17Motors ON/Dual Run Chain CircuitryElectricalTroubleshooting GuideIRB6400 M94A5.3 AUTO Mode CircuitThe AUTO Mode circuit is very similar to the ManualMode circuits. The difference is in the beginning of therun chains before the key switch. The AUTO modecircuits bypass the Manual Stop circuits.5.3.1 Run Chain 1- Starts on the back plane with 24 VDC.- Goes through FU4 (1.6 amp fuse).- Out X35 pin 20.- To XS3/XT3 terminal A3.This is where the customer can wire into ourAuto Stop(AS) circuit between XS3/XT3 terminals A3 and A4.This circuit will stop the robot from running only whilethe key switch is AUTO mode. If this circuit is not usedthen the customer may place a jumper between XS3/XT3 terminal A3 to A4.- 24 VDC then goes from A4 to the back plane X35pin 11.- Also to the System board (DSQC 256A) AP41:XP1pin A13, to the AS LED on the front of the Systemboard (DSQC 256A).If this LED's not on, then the circuit is open andneeds repair or closing of the AS circuit.- 24 VDC comes off the back plane through X34 pin10.- To the key switch terminal 2.If the key switch is in the AUTO mode:- 24 VDC will go out through terminal 1 on the keyswitch and then continue as it did for Manualmodes.Sheet 7, line 16 ............Fig. 5-1,2 .........Sheet 7, line 07 ............Fig. 5-5 ............Sheet 7, line 09 ............Fig. 5-1,2 .........Sheet 7, line 11 ............Sheet 7, line 14 ............Fig. 5-6 ............Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com