EX-TRAFIRE
®
40SD
Operator Manual, Revision T-15
3-25
System CNC interface connection
Each type of signal is available through the system CNC interface connector located on the rear
control panel� Use the chart with details of each signal type below when connecting the system
interface lead to the plasma arc power supply�
Signal:
START
(start plasma cutting)
Arc transfer
(start system motion)
Ground
Voltage divider
Type
Input
Output
Ground
Output
Note
Normally open�
Open circuit voltage
12 VDC in the
START terminals�
Requires a dry
contact to close it�
Normally open�
Dry contact
with maximum
capacity of:
125VAC/10A
250VAC/5A
30VDC/5A
Divider arc voltage signal of:
20:1
21�1:1
30:1
40:1
50:1
(provides a maximum 18V)
Rear socket
connection
3, 4
12, 14
13
6 (+), 5 (-)
Internal
wire colours
white, white
yellow, yellow
green/
yellow
6 (red), 5 (black)
Set the DIP switches to one of the following settings�
13
12
6
4
5
14
3
Turn OFF the power supply and disconnect the power lead prior opening the enclose�
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