Miller Electric MR-5 - Manual (Page 16)

2
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2. GAS/CURRENT SENSING CONTROL CON-
NECTIONS (Figures 2-1 And 2-2)
N-.
ELECTRIC SHOCK can kill.
• Do not touch live electrical parts.
• Shut down unit, welding power source, and
robot, and disconnect input power employing
“lockout/tagging procedures” before making in-
terconnections.
Lockout/tagging procedures consist of padlocking line
disconnect switch in open position, removing fuses
from fuse box, or shutting off and red-tagging circuit
breaker or other disconnecting device.
A. Computer Interface
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Gas/Current Sensing
Control Connections
1. Align keyways, insert 14-pin Amp plug into mat-
ching receptacle on computer interface, and
rotate threaded collar fully clockwise.
2. Align keyways, insert 16-pin Amp plug into mat-
ching receptacle on gas/current sensing control,
and rotate threaded collar fully clockwise.
B. Gas/Current Sensing Control
-
Motor Con-
nections
Align keyways, insert 14-pin plug from motor into mat-
ching receptacle on gas/current sensing control, and
rotate threaded collar fully clockwise.
C. Weld Cable Connections
Route cable from welding power source positive weld
output terminal, through the gas/current sensing con-
trol, to the wire drive assembly and connect cable to
weld cable terminal
(see Motor/Drive Assembly
Owner’s Manual for location).
D. Gas Connections
Connect hose from gas regulator/flowmeter (customer
supplied) at gas source to IN fining on gas/current sen-
sing
control. Connect gas hose from wire drive
assembly to fitting on gas/current sensing control. The
gas flow must be accurately controlled by a
regulator/flowmeter at the source.
E. Touch Sensor Connections
Connect cord with two friction connectors coming from
gas/current sensing control to touch sensor leads com-
ing from outlet cable. Polarity is not important for this
connection.
2
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3. COMPUTER INTERFACE
-
WELDING
POWER SOURCE CONNECTIONS (Figures 2-1 And
2-2)
ELECTRIC SHOCK can kill.
• Do not touch live electrical parts.
• Shut down unit, welding power source, and
robot, and disconnect input power employing
“lockout/tagging procedures” before making in-
terconnections.
Lockout/tagging procedures consist of padlocking line
disconnect switch in open position, removing fuses
from fuse box, or shutting off and red-tagging circuit
breaker or other disconnecting device.
There are several cords used for interconnections bet-
ween the computer interface and welding power
source. Examine and select the proper cord for the
following connections.
115 Volts AC/Contactor
control Cord
Computer
Interface
RC17 Rd
Arc Failure
Connection In
Robot Control UnIt
Arc Pak Welding
Power Source
Sensor
GaslCurrent
Sensing Control
Motor Control-
Cord
TB-i 14 357
Figure 2
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2. Interconnection Diagram
OM-882 Page 3