1
Spot Welding Application Using an Air Gun
1.6
Spot Gun Motion Control
1-40
1.6.6 Allocation Signal Meanings
Table 1-2: Robot Controller Input Signal
Signal
Content
Source
Standard
Setting
WELD COMPLETE
This signal specifies that welding has been completed.
When the welding command manual spot operation is
executed, it is used as a confirmation signal. When
there is no LS open/close confirmation, the welding
sequence ends and the next step is executed.
Welder
IN13
WELD ERR
This signal specifies an error in welding results or in
the welder. During welding, an alarm occurs and the
robot stops.
Welder
IN14
WIRE STICK DETECT
Specifies when a wire stick is detected. An alarm
occurs and the robot stops.
Wire Stick
Detector,
Welder
NOT USED
TMR COOL WTR ERR
Specifies a timer cool water error. An alarm occurs
and the robot stops. The servo power stays on.
Cool Water
Flow Switch
IN9
GUN COOL WTR ERR
Specifies a gun cool water error. An alarm occurs and
the robot stops. The servo power stays on.
Cool Water
Flow Switch
IN10
TRANSTHERMO ERROR
Specifies an error from the gun transformer is
transmitted directly to the robot controller. It is
normally ON (NC), and when OFF, an alarm occurs.
The servo power stays on.
Gun
Transformer
IN11
WELD ON/OFF (from
PLC)
Interlock circuit board, etc. PLC welder ON/OFF select
switch. Welder status signal which outputs welder
ON/OFF signal. While in the ON status, if the welder
is switched OFF, spot welding is not performed.
Interlock
Circuit Board,
etc.
CN308-B6
TIP REPLACE
COMPLETE
If this signal occurs after tip replacement, turn off the
tip replacement demand signal, and the tip hit count is
cleared.
Interlock
Circuit Board,
etc.
IN16
GUN FULL OPEN
DETECT
When there is a 2 step stroke gun, this signal specifies
stroke full open status.
Welding Gun
(Full Open
Status Detect
LS)
NOT USED
GUN OPEN DETECT
The open/close confirmation LS of a single gun and
short open confirmation LS of the 2 step stroke gun
are connected, and the gun open/close confirmation is
performed.
Welding Gun
(Open/Close
Confirmation
Detect LS)
IN15
GUN PRESS DETECT
Specifies the gun pressure status.
Welding Gun
(Pressure
Status Detect
LS)
NOT USED
AIR PRESS LOW
An alarm occurs if the air pressure is low. The servo
power stays on.
IN12
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