Hypertherm HT4100 Plasma Arc Cutting System Operating - Manual (Page 20)

INTRODUCTION & SPECIFICATIONS
2-3 HT4100 Instruction Manual: Operation
General
Hypertherm’s HT4100 is designed as a machine-mounted plasma cutting system for
cutting mild steel from gauge to one and one-half inch (38 mm) thick using oxygen as
the plasma gas. A micro-controller on the Master power supply control board helps to
provide extended life for the torch consumable parts. To achieve consumable long
life, all cuts must begin and end on the plate surface; this allows for the proper
ramping of gases and DC current to extend the life of the torch nozzle and electrode.
The HT4100 system provides the user with capability of locating the power supply
and the torch apart by a maximum of 300 feet (91 m). This is accomplished by
adding a remote High Frequency (HF) Console.
Maximum DC output for clean, dross-free cuts using oxygen with the HT4100 sys-
tem, is 300 amps (See
Cut Charts in the Operation section of IM166). The following
descriptions briefly describe the purpose and configuration of the major units which
comprise the HT4100 System.
HT4100 Master Power Supply
This unit houses two 100-amp, 15kHz chopper power supplies to produce constant
current DC output. Also located in this unit is the Torch Height Control (THC). The
power supply interconnects with the HF console, IHS, computer interface, remote V/
C, gas console, the HT4100 Slave power supply, and the workpiece.
HT4100 Slave Power Supply
This unit also houses two 100-amp, 15kHz chopper power supplies. When inter-
connected with the HT4100 Master power supply, up to 400 amps is made
available to the cutting system. The Slave interfaces with the Master supply, and
the Timer/Counter unit.
High Frequency (HF) Console
This unit houses the high frequency starting circuit which permits more effective RF
shielding and allows the power supplies to be installed at a distance of up to 300 feet
(91 m) from the torch. Also located in the console are two door interlock switches,
and a cooling water flow switch.
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