Operating Instructions PA-xxP
961-00035 rev11
36/42
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
10.6
Multiple 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 multiple output unit.
24V 20mA nominal rating - - Inputs and Outputs ARE fully protected against short circuit and overload.
Output
Description
D-Type Pin Out
Spare
Collector
14
Emitter
16
Spare
Collector
33
Emitter
34
Busy
Collector
12
Emitter
15
Arc Fail/Fault
Torch 4
Collector
11
Emitter
13
Spare
Collector
31
Emitter
32
Arc Fail/Fault
Torch 3
Collector
29
Emitter
36
Arc Fail/Fault
Torch 2
Collector
10
Emitter
35
Arc Fail/Fault
Torch 1
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
Start 3
(Spare)
Anode
23
Cathode
25
Pedal
Anode
4
Cathode
5
Sequence
Start
Anode
3
Cathode
8
Start 2
(Spare)
Anode
22
Cathode
7
Start 4
Anode
21
Cathode
27
Inhibit
(Start 3)
Anode
2
Cathode
6
Gas
(Start 2)
Anode
20
Cathode
24
Start 1
Anode
1
Cathode
26
The Sequence Start input fires outputs 1 to 4, with a delay of 100ms between welds.
The Pedal input is only active when the machine is in setup (man mode).
Amada Weld Tech recommend the use of screened cables for all connections.
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.