Voltage Divider Adjustment; Output Voltage Sample; Section 3 - ESAB PowerCut 1300 Instruction Manual

SECTION 3

WArNINg
3.7

Voltage Divider Adjustment

It may be necessary to adjust the Voltage Divider or VDR to match the particular height control system. There are
two default settings for the PowerCut models as shipped from the factory:
• STANDARD UNITS (Non-CE):
If the height control system does not match the factory default setting, matching can be accomplished by ad-
justing the VDR potentiometer.
1. Place ohm meter leads between P44-1 & P44-3. Adjust R90 to achieve the desired divide ratio for the
particular height control system used. For example:
•
•
2. If desired, additional minor adjustments of the VDR potentiometer may be made. Any adjustments
should be performed by a qualified technician.

3.7.1 Output Voltage Sample

Output Voltage Sample - Some Cutting Machines sample the full output voltage of the plasma system to control the torch
height and to determine when to start moving. The full output voltage is available within the machine on a pair of insu-
lated male spade terminals.
1. Cut tie wrap. Remove sleeve and voltage pickup insulators.
MAKE SUrE POWEr SWITCH ON CONSOLE IS IN Off POSITION AND
PrIMArY INPUT POWEr IS DE-ENErgIZED.
750 ohms (21:1)
16:1 ratio 1000 ohms
18:1 ratio 882 ohms
• CE UNITS (Europe):
• 21:1 ratio 750 ohms
• 20:1 ratio 789 ohms
Output Voltage Sample
Trigger Interconnect
50
INSTALLATION
789 ohms (20:1)
Potentiometer