Cnc Interface Connection (Continued) - ESAB ESP-101 Manuel D'instruction

SECTIoN 3
3.6

CNC Interface Connection (continued)

Start signal (pin M)
Use a relay to connect this pin to "Common" (pin N) to start the cutting process.
If a transistor is used for this signal, then the positive potential must be connected to pin M and the common/negative to
pin N. This would require a transistor capable of blocking 24 VDC and sinking more than 11 mA.
Corner / External reference (pin E)
Use a relay to connect this pin to "Common" (pin N) to set the cut current reference signal to the external source- pins L
and J.
If a transistor is used for this signal, then the positive potential must be connected to pin E and the common/negative to
pin N.
arc on (pins g and I)
These pins will be connected together, via normally open relay contacts that close when the plasma system has estab-
lished work current. This signal is also referred to as "Motion Allow" or "Arc-Established".
Voltage Divider (VDr) for automatic height Control (pins C and h)
Pin C is the positive connection to the Voltage Divider Network. Pin H is the negative connection.
See section 3.7 for Voltage Divider default values and adjustment instructions.
Current reference for optional remote Current Control (pins l and J)
This signal should be provided by an active driver that is referenced to ground. The signal is received (inside the power
source) by a differential amplifier, insuring adequate input impedance for the driver. It is safe to connect output signal
directly to pin L and the control common directly to pin J.
The reference signal will be scaled as follows:
- 0 V input, 20 Amps output
- 10 V input, 100 Amps output
- 20 Amps + 8 Amps per Volt input
optional Input: fault (pins a and B)
This is a power source fault signal that can be used to signal the external control that the plasma is in a fault condition. It
is important to note that this is a transistorized and therefore polarized signal. A source voltage of at least 12 VDC, but no
more than 30 VDC, should be applied to pin B. The fault signal will then come out on pin A.
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INSTallaTIoN