Duramax/Duramax Hyamp Robotic Torches Service Manual 807460 41
2 – Torch Setup
Connecting the machine interface cable
The power supply may be equipped with a 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 Figure 17) 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, see Setting the five-position voltage divider on page 44.
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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