Amada MacGregor PA-200P Series, Operation Manual, Page: 35 / 42

Operating Instructions PA-xxP
961-00035 rev11 35/42
Typically, the collector connection
is pulled up to +24VDC and is
used as the input to a PLC, while
the emitter is connected to the
+24V return (0V) connection
10.4 AVM Voltage Output Terminals
These terminals are designed for connection to a MacGregor AVM (Arc Voltage Monitor). They are not
isolated from the welding circuit, and should NOT be used for any other purpose.
Take care when making these connections to match polarity, RED is positive, BLACK is negative.
Take care that these wires are not short circuited or crossed.
10.5 Single Output Digital I/O (37way D Type)
The following tables show the standard outputs and inputs available at the 37W D type PLC interface
socket on a single output unit.
24V 20mA nominal rating - - Inputs and Outputs ARE fully protected against short circuit and overload.
Output Description D-Type Pin Out
Pulse 2 Fault Collector 14
Emitter 16
Energy Limit
Fault Pulse 2 Collector 33
Emitter 34
Busy Collector 12
Emitter 15
Pulse 1 Fault Collector 11
Emitter 13
Voltage Limit
Fault Pulse 2 Collector 31
Emitter 32
Energy Limit
Fault Pulse 1 Collector 29
Emitter 36
Voltage Limit
Fault Pulse 1 Collector 10
Emitter 35
FAULT Collector 28
Emitter 17
All the output transistors are normally ON, and go OFF when active.
The BUSY signal turns OFF for the duration of the weld cycle.
The Arc Fault outputs turn off for the duration specified in the
configuration screen, if there is an arc fail or fault.
Input Description D-Type Pin In
Spare Anode 23
Cathode 25
Pedal Anode 4
Cathode 5
Spare Anode 3
Cathode 8
Spare Anode 22
Cathode 7
Spare Anode 21
Cathode 27
Inhibit Anode 2
Cathode 6
GAS Anode 20
Cathode 24
Start 1 Anode 1
Cathode 26
The Pedal input is only active when the machine is in setup (man mode).
Basic Schematic of
optically isolated output
Collector
Emitter
1K
1N4148
Basic Schematic of
optically isolated input
4K7
Anode
Cathode
Typically, the anode is connected directly
to +24VDC (obtained on pin 37) while the
cathode is connected via a PLC or switch
to 0V(24) (obtained on pin 19). Passing
current, activates the input.