ESAB PCM IGBT Gate Driver PCB Plug Wiring Troubleshooting instruction

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DATE: January 14, 2003 BULLETIN NO: P_03_003

TITLE/ PRODUCT NAME

: PCM IGBT Gate Driver PCB Plug Wiring

(PN - 38014, 38052, 31486)

RATING:

_____ DIRECTIVE _

X_ ALERT

(Action is Required) (Potential Problem)

_____ INFORMATION ____ PRODUCT IMPROVEMENT

(Action is Optional) (Enhanced Product)

X _ General Distribution _____ Business Confidential

(Unrestricted) (Restricted Distribution)

PRODUCT SERIES/ MODEL/SERIAL NO.: PCM-500i All ESP-100i All

PCM-750i All Precision Plasma All

PCM-875 All ESP-200 All

PCM-1125 All

SUMMARY: The IGBT driver PCB (Part Numbers – 38014, 38052 and 31486) could have the plugs

wired inconsistently. There are two driver PCB’s in each model listed above. If replacing only one

driver PCB be sure the plug wire sequence matches the driver PCB already in the unit. If in doubt

replace both driver PCB’s with recent manufactured replacement parts.

Check to be sure that:

1. Terminal #1 on the PCB is wired (white) to plug pin #4

2. Terminal #2 on the PCB is wired (red) to plug pin #3

3. Terminal #3 on the PCB is wired (red) to plug pin #2

4. Terminal #4 on the PCB is wired (white) to plug pin #1

Note: Plug pin #1 is identified by a triangle positioned over the pin. Terminal #1 is etched on

the PCB.

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OPERATIONAL IMPACT:

IF A MISMATCHED SET OF DRIVER PCB’S ARE INSTALLED, THE POWER SOURCE WILL BE

SERIOUSLY DAMAGED WHEN POWER IS APPLIED.

ACTION / COMMENT/ OPERATIONAL NOTE: It is recommended that work be completed by a trained

service technician preferably by an ESAB Authorized Repair Station.

CONTACT:

ESAB Welding & Cutting Products

Product & Service Information Group

843-664-4416