Monitor Function For Spot Welding Equipment - YASKAWA YRC1000 Operator's Manual

1.6.7 Monitor Function for Spot Welding Equipment

Table 1-4: Function List
Function Content
AIR PRESS LOW When the air pressure is low and
Input Signal this signal turns on, an alarm
occurs. The servo power stays
on. This function signal must be
set in the Concurrent I/O
Parameter.
TIMER COOL When the water cooling is low and
WATER ERROR this signal turns on, an alarm
GUN COOL WATER occurs. The servo power stays
ERROR on. This function signal must be
set in the Concurrent I/O
Parameter.
TRANSTHERMO When a gun transformer error
ERROR occurs, this input turns off and an
alarm occurs. The servo power
stays on. This function signal
must be set in the Concurrent I/O
Parameter.
1 Spot Welding Application Using an Air Gun
1.6 Spot Gun Motion Control
1-42
Signal Method of Use
Condition
Normal: OFF This signal can be used during the
(NO) low air pressure signal in the spot
Signal Function input allocation display if the set
general-purpose input external
input is on.
To reset the alarm, turn the signal
off, and it will return to the alarm
reset operation.
Normal: OFF This signal can be used during the
(NO) low water cooling signal in the spot
Signal Function input allocation display if the set
general-purpose input external
input is on.
To reset the alarm, turn the signal
off, and it will return to the alarm
reset operation.
Normal: ON Even though usually a timer error is
(NC) transmitted to the timer from the
Signal Function gun, and the main signal is
transmitted from the gun
transformer, an alarm may occur.
Also if the pressure, full open
status, short open status signal,
etc. is transmitted from the robot
controller, the signal line from the
timer to the gun becomes a
transthermo error only. If this signal
is checked on the robot side, the
signal line transmitted to the timer
disappears, and the cable handling
is made easier.
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