1
Spot Welding Application Using an Air Gun
1.1
System Overview of Spot Welding System Using an Air Gun
1-1
1
Spot Welding Application Using an Air Gun
1.1
System Overview of Spot Welding System Using an Air Gun
An I/O signal diagram of a typical spot welding system is shown below.
Fig. 1-1: I/O Signal Diagram for Spot Welding System
• WELD COND (level signal)
• Sets the welding conditions for the welder.
• The output format can be set as binary or discrete.
• Can handle up to 255 conditions (for binary).
• WELD REQUEST (level/pulse)
Outputs the start instruction to the welder.
• WELD ERROR RESET (level)
Resets the welding alarm status of the welder.
• GUN PRESSURE (level)
Outputs gun pressure instruction to the welding gun.
Robot
Controller
Welder
WELD COND
(8 bits max)
Welding Gun
WELD
REQUEST
WELD
COMPLETION
WELD ERROR
WELD ERROR
RESET
WELD ON/OFF
GUN PRESSURE
STROKE CHANGE
DOUBLE STROKE GUN
FULL-OPEN DETECTION
(Single Solenoid /
Double Solenoid)
DOUBLE STROKE GUN
SHORT-OPEN DETECTION
128 64 32 16 8 4 2 1
(8) (7) (6) (5) (4) (3) (2) (1)
8-bit
* Values in parentheses are for discrete.
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