Hypertherm Powermax 65, Operator'S Manual

Page: 65 / 156

TORCH SeTUP
powermax
65/85
Operator Manual
3-19
Connecting an optional machine interface cable
The Powermax65 and Powermax85 power supplies are equipped with an optional, factory-
installed, five-position voltage divider that is designed to be safely connected without tools. The
built-in voltage divider provides a scaled down arc voltage of 20:1, 21.1:1, 30:1, 40:1, and 50:1
(maximum output of 18 V). An optional receptacle on the rear of the power supply provides access
to the scaled down arc voltage and signals for arc transfer and plasma start.
ote: N The factory presets the voltage divider to 50:1. To change the voltage divider to a
different setting, refer to “Setting the five-position voltage divider” on page 3-22.
aution: C The factory-installed internal voltage divider provides a maximum of
18 V under open circuit conditions. This is an impedance-protected
functional extra low voltage (elV) output to prevent shock, energy,
and fire under normal conditions at the machine interface receptacle
and under single fault conditions with the machine interface wiring.
The voltage divider is not fault tolerant and elV outputs do not
comply with safety extra low voltage (SelV) requirements for direct
connection to computer products.
Hypertherm offers several choices of machine interface cables for the Powermax65 and
Powermax85:
• To use the built-in voltage divider that provides a scaled down arc voltage in addition to
signals for arc transfer and plasma start:
- Use part number 228350 (25 ft, 7.6 m) or 228351 (50 ft, 15 m) for wires terminated
with spade connectors.
- Use part number 123896 (50 ft, 15 m) for a cable terminated with a D-sub connector.
(Compatible with Hypertherm’s Edge Ti and Sensor PHC products.)
• To use signals for arc transfer and plasma start only, use either part number 023206
(25 ft, 7.6 m) or part number 023279 (50 ft, 15 m). These cables have spade connectors
as shown below.