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Machine Interface Receptacle with Voltage Divider PCB

16 806980 Field Service Bulletin Powermax65/85/105/125, Powermax65/85/105 SYNC

Set the voltage divider PCB

The factory setting on the voltage divider PCB is 50:1.

To change the voltage divider to a different setting, set the DIP switches to one of the following:

For more information, refer to the Powermax65/85/105 SYNC Mechanized Cutting Guide

(810480).

NOTICE

The voltage divider PCB is a simple resistive divider of raw arc voltage. To prevent ground loops and

electrical interference, you must isolate the divided arc signal.

NOTICE

The factory-installed voltage divider PCB supplies a voltage that is in proportion to the arc voltage. The

DIP switch settings on the voltage divider PCB control the output in open circuit conditions, to a

maximum output of one of the following voltages: 18 V for Powermax65/85, 15 V for Powermax105 and

Powermax65/85/105 SYNC, 16 V for Powermax125. This output is an impedance-protected,

functional extra-low voltage (ELV) output. This type of output prevents shock, energy, and fire under

normal conditions at the machine interface receptacle and in single-fault conditions with the machine

interface wiring. The voltage divider PCB is not fault tolerant and ELV outputs do not comply with safety

extra-low voltage (SELV) requirements for direct connection to electrical devices.

X12

C1 C4

BLK

RED

BLK

21.1 30

GRN

ALL DOWN = 20

20:1 21.1:1 30:1 40:1 50:1

Hypertherm powermax65 Field Service Bulletin

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