CONNECTION OF
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| RECEPTACLE |
POWER SOURCE | CONTROL CABLE |
FOR CONTROL CABLE
WITH 14 PIN
PLUG CONNECTOR
21 | TO AUTOMATIC | OR | |
CONTROL BOX | |||
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| CONTROL CABLE | FOR CONTROL CABLE | |
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| WITH TERMINAL STRIP | |
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| LEAD CONNECTORS |
Do not operate with covers removed.
Disconnect power source before servicing.
Do not touch electrically live parts.
Only qualified persons should install, use or 
service this machine.
DC-655
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| N.A. Welding cables must be of proper capacity for the current and | ||
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| duty cycle of immediate and future applications. | ||
+21 - 21 41 | 4 | 2 | 31 | 32 | 75 | 76 | 77 | N.B. Extend lead #21 from control cable with terminal strip connectors | ||
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| or from | ||
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| 77 | physically suitable for the installation. An | ||
N.F. |
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| remote voltage sensing work lead may be ordered for this purpose. | |||
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| 76 | Connect it directly to the work piece keeping it electrically | |||
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| 75 | separate form the welding work lead circuit and connection. For | ||
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| 32 | |||
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| convenience, this extended #21 lead should be taped to the | |||
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| 31 | |||
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| 2 | welding work lead. (If the length of work lead circuit is | ||
N.B. & N.C. |
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| 4 | short, and connections can be expected to be reliable, then | ||||
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| GND | control cable lead #21 does not need to be extended and can be | |||||
NEGATIVE |
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| POSITIVE |
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| N.D. | directly connected to terminal #21 on the terminal strip. Note | ||
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| that this is not the preferred connection because it adds error | |||||
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| 21 | to the wire feeder voltmeter reading.) |
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| N.C. Tape up bolted connection if lead #21 is extended. | ||
| N.G. |
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| N.D. Connect the control cable ground lead to the frame terminal | |||
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| marked | near the power source terminal strip. The power | |
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| ELECTRODE CABLE | source grounding terminal (marked | and located near the power | |
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| TO AUTOMATIC | source input power connections) must be properly connected to | ||
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| EQUIPMENT | electrical ground per the power source operating manual. | ||
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| N.E. If a variable voltage board is present in the automatic controls, | ||
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| the jumper lead on the VV board must be connected to pin "L" to | ||
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| permit the inch down button to operate. This jumper, however, | ||
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| TO WORK | will disable the cold starting/autostop feature of the automatic | ||
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| controls, permitting only hot starting techniques to be used. | |||
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DIAGRAMS
REMOTE VOLTAGE SENSING LEAD
Above diagram shows electrode connected positive. To change polarity, turn power off, reverse the electrode and work leads at the power
source. | Reverse the leads on the back of the ammeter and voltmeter | |
in the automatic control box. | Also refer to note N.F. | |
For proper setting of switches on power source, see power source operating manual.
N.F. If lead #21 is to be connected to the terminal strip, connect to the #21 terminal that matches work polarity. This connection must be changed whenever the electrode polarity is
changed.
N.G. Illustration does not necessarily represent actual position of appropriate output studs. Refer to power source operating manual for more information.
S22978
