MK Products Weld Control - Manual (Page 26)

Weld Control Selector Guide - Page 19
Miller Electric
M-4
CaUtiOn: MaKE SURE tHat tHE HiGH
fREQUEnCy iS tURnEd Off
OR daMaGE tO tHE WC-1 OR
COBRaMatiC WiLL OCCUR.
Older style MM35, MM200 and Spoolmate 200 units without 14-Pin amphenols have either 4-Pin plastic
AMP plugs (trigger plug) and/or a 4-Pin Amphenol plug in the lower right hand corner.
Some newer Miller power supplies, such as the MM250-X & MM251 use this same receptacle (AMP
style) for the trigger on their push type guns.
1. Connect the black and white contactor leads from the WC-1 or Cobramatic to pins B & d of the
4-Pin Amphenol; black to "B" and white to "d".
The AMP plug only has two pins installed so place the contactor leads on those two pins (color
code not important). Place the contactor in CLOSING CONTACTS (see Appendix for contactor
information).
2. There is no 115VAC available on these units so plug the WC-1 or Cobramatic into a wall outlet.
3. Tape off WC-1
red and green leads and turn off Posa Start switch as Posa Start is not used.
note: The feeder inside these units will also be turned on when using the trigger plug, so disengage
the spring tension on drive roll. The 4 pin amphenol plug does not turn on the feeder.
The WC-1 Control Box or a Cobramatic system can also be connected to Miller CC power supplies with
14-Pin amphenols as follows:
1. Connect the black and white contactor leads from the WC-1 or
Cobramatic to pins A & B of the 14-Pin amphenol; black to "a"
and white to "B". Place the contactor in CLOSING CONTACTS
position (see Appendix for contactor information).
2. Plug the 115VAC plug from the WC-1 or Cobramatic into a
standard wall outlet.
3. *Connect the red and green leads from the WC-1 to the power
supply positive (+) and negative (-) terminals of the power supply;
red to positive (+) and green to negative (-).
4. If the power supply has a Remote/Standard contactor switch set it to "REMOTE" (14-Pin).
5. Set the amperage control to "panel" and the process switch to "TIG".
6. Place polarity switch to DC Reverse Polarity (electrode positive).
7. The Posa Start must be used. See WC-1 or Cobramatic owner's manual for Posa Start
information.
*See Appendix for Posa Start information.
14-Pin
amphenol
MK P/n’s
MiLLER
P/n’s
Socket 153-0325 094-481
Cord Clamp 411-0035 108-852
Rubber Boot 301-0021 ---
M-5
4-Pin amphenol amphenol P/n’s Miller P/n’s
Socket 3106A18-4P 073-329
Cord Clamp 3057-1010 073-331
Rubber Boot
MS3420-10
MS3420-8
---
4-Pin aMP MK P/n’s aMP P/n’s Miller P/n’s
Socket 153-0998 206429-1 079-878
Cord Clamp 153-0946 206062-3 048-834
Pins (2 req.) 153-0958 66099-2/-3 ---