Cnc Interface Connection (Continued) - ESAB ESP-101 Manual De Instrucciones

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.
22
INSTallaTIoN