Tweco Weld Sequencer - Manual (Page 61)

Manual 0-2023 55 APPENDIX
APPENDIX VII: TIMING AND SEQUENCE OF OPERATION
FOR GS1 GAS SLOPE ONLY
A
B
C
D E
A-02437
E
D
H
D
G
D
I
D
G
I
H
A
• Power Supply to ON
• Welding Console in RUN position
• Coolant Recirculator to ON
• Gases on
• Torch positioned
• Weld Sequencer Enclosure to ON
• GS1 to ON
• GS1 to MANUAL
B
• RP1 Control CONTACTOR to ON
• Welding Arc transfers
• Gas at MIN flow
C
• RP1 START SEQUENCE pressed
• GS1 UPSLOPE starts
D
• MAX plasma gas flow is reached
E and E
D
• RP1 DOWNSLOPE pressed
If GS1 DOWNSLOPE DELAY is set at 0
downslope of gas starts
If not set at 0, downslope starts X seconds later
at E
D
G and G
D
• Gas flow reaches MIN flow level
H and H
D
• RP1 CONTACTOR to OFF
• Welding Arc extinguishes
I and I
D
• Weld Sequencer Enclosure to OFF
• Welding Console to OFF
• Power Supply to OFF
• Coolant recirculator to OFF
• Gases shut off