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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 de-
fault settings for the PowerCut models as shipped from the factory:
•
STANDARD UNITS (Non-CE): 750 ohms (21:1)
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 P25-1 & P25-3. Adjust R81 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.
16:1 ratio 1000 ohms
18:1 ratio 882 ohms
•
CE UNITS (Europe): 789 ohms (20:1)
•
21:1 ratio 750 ohms
•
20:1 ratio 789 ohms
Potentiometer
Output Voltage Sample
Trigger Interconnect
50
INSTALLATION
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