100 Powermax125 Service Manual 808070
7 – Mechanized Cutting
Connecting the machine interface cable
The Powermax125 is equipped with a factory-installed five-position voltage divider board. The built-in voltage divider
provides a scaled down arc voltage of 20:1, 21.1:1, 30:1, 40:1, or 50:1 (maximum output of 16 V). A receptacle on the
rear of the power supply (see the previous illustration) provides access to the scaled down arc voltage and signals for arc
transfer and plasma start.
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 103.
Hypertherm offers several choices of machine interface cables:
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 (7.6 m, 25 feet) or 228351 (15 m, 50 feet) for wires terminated with spade
connectors.
Use one of the following part numbers for a cable terminated with a D-sub connector. (Compatible with
Hypertherm products, such as EDGE
®
Pro Ti and Sensor
™
PHC.)
223354 (3.0 m, 10 feet)
223355 (6.1 m, 20 feet)
223048 (7.6 m, 25 feet)
223356 (10.7 m, 35 feet)
123896 (15 m, 50 feet)
To use signals for arc transfer and plasma start only, use either part number 023206 (7.6 m, 25 feet) or part
number 023279 (15 m, 50 feet). These cables have spade connectors as follows:
CAUTION
The factory-installed internal voltage divider provides a maximum of 16 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.
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