Hypertherm PAC500 Product Configuration - Manual (Page 25)

1-20 PAC-500
11c THC-1 with Digital Current Control and Inductive IHS
The THC-1 in this system has the same benefits as the standard THC-1 (see 11b) with
the additional feature of arc current control from a small current control receiver that
should be located near the operator. A manual transmitter interfacing between the
current control receiver and power supply completes the digital current control portion of
this system.
Unlike the fluidic IHS, the inductive IHS can be used for both above and underwater
cutting applications. The inductive IHS system requires a regulated air supply of 20 psi
(1.4 bar) to operate the probe assembly air cylinder. Two probes, two probe cables, an
air cylinder and air cylinder hosing are included in this package. The IHS module must
be located within 40 feet (12 m) of the torch. A torch mounting bracket is also
included with the inductive IHS system. Do not order a separate torch mounting
bracket when ordering the inductive IHS option.
Note that with this system, cables from the THC-1 module to the IHS, cutting
machine controller, torch lifter, and star ground are not supplied by Hypertherm.
Use six-pair 22-gauge cable to connect the THC-1 module to the IHS, and cutting ma-
chine controller. Use five-conductor 18-gauge cable to connect the THC-1 to the torch
lifter, and 18-gauge stranded copper to connect the THC-1 to star ground.
The cable from the IHS module to the control console is also not supplied.
Use six-pair 22-gauge cable for this connection.
Cabling is also not supplied connecting the transmitter to the current control
receiver and power supply. Use six-pair 22-gauge cable to connect the transmitter to
the current control receiver, and three-pair 22-gauge cable to connect the transmitter to
the power supply. If power supplies are connected in parallel, use two cables between
the transmitter and the power supplies.
• Locate an area to mount the THC-1 module (this should be in eye sight of the
operator), the current control receiver (this should be in easy reach of the operator), the
transmitter, and the IHS module (within 40 feet (12 m) of the torch). Order the system.