Arc Failure Light Connections - Miller Electric A.B.B. Robot Interface Gas Control Hub And Spindle Owner's Manual

2-10. Arc Failure Light Connections

Robot Control Unit
Common Terminal
If So Equipped
+24VDC
Common Terminal
If So Equipped
To Voltage Source
(115VAC, 24VAC, 24VDC)
Robot Control Unit
+24VDC
Isolation Relay CR
Tools Needed:
OM-884 Page 14
Robot Interface
Weld Alarm Terminal
If So Equipped
Signal
Relay
CR 1TL
1TM
Robot Control Unit
Weld Alarm Terminal
If So Equipped
Signal
Relay
CR
Isolation Relay CR
Robot Interface
1TL
1TM
Arc Failure
Indicator Light
Arc Failure
Indicator Light
.
Arc Failure light on robot inter-
face front panel turns on and off
by a signal from robot control
unit. Obtain proper length of 18
gauge/2-conductor cord for
this connection.
For robot control units when 24 vdc
is used:
1 Route cord through strain
relief on right side panel of
robot interface, and make
proper connections to 1TL
and 1TM.
2 Route and connect remaining
end of cord to weld alarm
terminal and ground
connection at the robot control
unit.
3 Connect +24 vdc to common
relay contact terminal.
For robot control units when 115 or
24 vac, or 24 vdc is used:
1 Route cord through strain
relief on right side panel of
robot interface, and make
proper connections to 1TL
and 1TM.
2 Obtain a 115 or 24 vac, or 24
vdc isolation relay CR1, and
install into robot control.
3 Route and connect remaining
end of cord to one side of the
normally-open robot control
relay contact and ground.
4 Connect +24 vdc to remaining
side of normally-open robot
control relay contact.
5 Connect a lead from one side
of robot control coil to weld
alarm terminal.
6 Connect proper voltage
source (115 vac, 24 vac, or 24
vdc) between common
terminal and remaining side of
robot control relay coil.
S-0292