ESAB EPP-360 Instruction Manual page 32

US
The table used to calculate the initial current, pilot current and upslope values are
stored in the micro and contains the following information:
Cut current
(amps)
30
50
100
200
300
360
If values other than the table values are used for the cut current, the corresponding
values are calculated assuming a linear slope for all the required parameters.
2. Remote mode -
a. Partial CNC operation - (CNC cable pin "V" open, open for internal control)
In this mode of operation the panel/remote switch needs to be in the remote
position. The CNC should be providing the cut current reference and
start/stop signal to the power source. Based on the cut reference the micro
in the power source will compute the initial current, pilot current and upslope
time.
b. Remote with Full CNC Mode - (CNC cable pin "V" closed, closed for
external control) Panel/remote switch on the power source is set to remote .
The CNC should activate the input labeled "full CNC control" on pin "V" of the
interconnect cable. In this mode all parameters are controlled by the CNC,
including start current, pilot current and sloping times. The control of the pilot
current can be done either by logic inputs or by an analog input. If the analog
input is less than 0.5 volts, the power source will use the logic inputs PA0
and PA1 to provide the requested pilot arc current, based on the following
combination:
PAO
open
closed
open
closed
If the analog reference is used, 10 VDC will provide 45 amps or 1 V = 4.5 amps.
Marking - Can be done in both panel and remote mode and requires the mark
mode select input to be closed by the CNC. In the panel mode the maximum
marking current (set by the panel potentiometer) is 36 amps. If SW1-1 (which is
open on the control board) is closed, the range becomes 0 -18 amps max. In the
remote mode the marking current is set by the main reference input and 10 VDC
will provide 36 amps or 1 V = 3.6 amps of marking current.
bp12a2
Start current Pilot arc current
(amps)
20
25
50
100
150
180
PA1
open
open
closed
closed
- 32 -
Upslope time
(amps) (msec)
15
20
25
30
35
40
Pilot current in amp
10
20
30
40
200
250
500
800
900
950
© ESAB AB 2010