© ESAB AB 2010
-30-
bp12a2
8.3 Modes of operation
The EPP-360 operates in the Cutting Mode through a single continuously adjustable
output current range from 30 amps through 360 amps using either the current
potentiometer on the front panel, or a remote current reference signal fed into
connector J1.
When using a remote signal, 1 volt corresponds to 36 amps, and 360 amps
corresponds to a signal of 10.00 VDC.
The EPP-360 defaults to the Cutting Mode of operation unless the command signal
from a r emote control for Marking Mode is supplied.
The power source is placed in Marking Mode with an external isolated relay or switch
contact connecting J1-R (115VAC) to J1-C. This contact closure must be made
before (50 mS or longer) issuing a Start or Contactor On command.
In the CNC Marking mode, the output current is adjusted through a single
continuously adjustable range from 0 amps through 36 amps using the remote
current reference signal fed into connector J1. In the Panel Marking mode, the
output current can be adjusted from 0 - 18 amps using the panel potentiometer, as
the unit is shipped. If SW1-1 (which is open on the control board) is closed, the
range becomes 0 -18 amps max.
When using a remote signal, 1 volt corresponds to 3.6 amps, and 36A corresponds
to a signal of 10.00 VDC.
8.3.1 4 .3 .1. Single power source (used with the CNC, two ba s i c modes of
operation are possible)
1. Panel Mode - (switch is provided on the power source) Put Panel/Remote switch
to Panel position. Used with a limited capability CNC that can only pro vide a
start/stop signal to the power source. The microcontroller in the power source
will accept the analog setting from the panel potentiometer as the cut current
information. Based on this value it will calculate the initial current value, the pilot
arc and the upslope time. The cut value and P.A. value can be displayed prior to
cutting by moving the spring return switch on the power source to the cut current
preset, and the pilot arc preset positions. If the pilot arc current is deemed
insufficient, the CNC can increase it by providing inputs on the PA0 and PA1
control leads. The increased values are as follows:
PA0 PA1
off off no change
on off value increased by 12.5%
off on value increased by 2.5%
on on value increased by 37.5%
US
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