F-4
DIAGRAMS
F-4
IDEALARC® DC-1000
CONNECTION OF DC-1000 TO LN-7
CONNECTION OF DC-1000 TO LN-9
N.A. Welding cables must be of proper capacity for the current and
duty cycle of immediate and future applications.
N.B. Extend lead 21 using #14 or larger insulated wire physically suit-
able for the installation. An S16586-[ ] remote voltage sensing
work lead is available for this purpose. Connect it directly to the
work piece keeping it electrically separate from the welding work
lead circuit and connection. For convenience, this extended #21
lead should be taped to the welding work lead. (This extended
#21 lead connection replaces the need to employ the remote
work lead accessory on LN-7 meter kits which have a direct work
lead jack. An LN-7 not equipped with a meter kit does not require
lead 21 to be extended.)
N.C. Tape up bolted connection.
N.D. Connect the control cable ground lead to the frame terminal
marked near the power source terminal strip. The power
source must be properly grounded.
N.E. Terminal strip for remote voltage control pot. when used.
N.F. Alternative 500 amp positive terminal connection provided on
DC-1000 models above code 9500 only.
N.A. Welding cables must be of proper capacity for the current and
duty cycle of immediate and future applications.
N.B. Extend lead 21 using #14 or larger insulated wire physically suit-
able for the installation. An S16586-[ ] remote voltage sensing
work lead is available for this purpose. Connect it directly to the
work piece keeping it separate from the welding work cable con-
nection to work piece. For convenience, this extended #21 lead
should be taped along the welding work cable. (This extended
#21 lead connection replaces the need to employ the remote
work lead accessory on LN-9’s which have a direct work lead
jack.)
N.C. Tape up bolted connection.
N.D. Connect the LN-9 control cable ground lead to the frame terminal
marked near the power source terminal strip. The power
source must be properly grounded.
N.E. If using an older automatic control cable with leads 75, 76, 77;
Connect lead 75 to #75 on terminal strip, connect lead #76 to
#74 on terminal strip, connect lead #77 to #73 on terminal strip.
N.F. The LN-9 voltage control jumpers must be connected as follows
(Refer to LN-9 operating manual): White jumper on voltage board
to pin “S”. Blue jumper on voltage board (later units only) or on
start board (earlier units). To pin “B”.
N.G. Set the DC-1000 controls as follows: Set the control switch to
“Output Control Remote”. For Submerged Arc Processes, set the
mode switch to “C.V. Innershield”.
N.H. Alternative 500 amp positive terminal connection provided on
DC-1000 models above code 9500 only.
Above diagram shows electrode connected positive. To change
polarity, turn power off, reverse the electrode and work leads at
the power source and position the switch on power source to
proper polarity.
Above diagram shows electrode connected positive. To change
polarity, turn power off, reverse the electrode and work leads at
the power source, position the positive-negative switch on the
power source to correspond to the polarity of the electrode cable
connection. Refer to LN-9 operating manual for required polarity
connections.
21
4
2
31
32
73
74
75
76
77
3
2
31
2
4
G
N D
POWER SOURCE
LN-7 CONTROL CABLE
TO LN-7 INPUT
CABLE PLUG
NEGATIVE
P
OSITIVE
21
N.B. & N.C.
N.D.
N.F.
N.A.
ELECTRODE CABLE TO
LN-7 CONDUCTOR BLOCK
TO WORK
}
N.E.
21
42
31
32
73
74
75
76
77
32
31
2
4
G N
D
POWER SOURCE
CABLE PLUG
NEGATIVE
POSITIVE
21
N.B. & N.C.
N.D.
N.A.
ELECTRODE CABLE TO
}
TO LN-9 INPUT
N.F.
N.H.
WIRE FEED UNIT
CONNECT TO WORK
A
B
C
}
N.E.
CONTROL CABLE
S17177
8-2-90F
S17185
8-2-90F
