Lincoln Electric CWT ATC-3, Operator'S Manual

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11
2.5 USER I/O CONTROLS
The control also provides a user I/O interface for remote control of the ATC-3. There are two isolated
Solid State Relay (SSR) outputs CR1 (TRACK ON) and CR2 (TOUCH RETRACT ACTIVE). There are
two Isolated inputs INP1 (MOVE TO TORCH UP POSITION) and INP2 (REMOTE TRACKING
ON/OFF) is used to start and stop Tracking from an external control. The SSR outputs are rated at 28
VDC @ 100ma and the inputs are rated at 12 – 28 VDC @ 10 ma. The inputs and outputs provide
galvanic isolation from the ATC-3 controller. The ATC-3 also provides a non-isolated 24 VDC @ 100
ma source that for operating the ATC-3 I/O.
The following is a functional description of the ATC-3 I/O:
•
INP 1 -
If the ATC-3 is idle then setting this input will move the torch to the Torch UP
position
•
INP 2 - If the ATC-3 is idle mode or if the ATC-3 has an Arc On condition then the Torch
Height tracking will be enabled. If Tracking is activated with this input then when the
Input is set low the tracking is turned off.
• CR1 - TRACK ON - Is set When the Track On function is running. It is cleared when the
tracking function is off.
•
CR2 - TOUCH RETRACT RUNNING - Is set when the Touch retract routine is active and
is cleared when complete. This is used to provide a touch reference voltage signal to the
torch when not welding.
FIGURE 2-6 – User I/O Configuration
"INP2"
"INP1"
"+24 VDC"
"OCOM"
"PCOM"
"ICOM"
"CR1"
"CR2"
WHT
BRN
GRN
YEL
GRY
PNK
RED
BLU
GND
1
2
3
4
5
6
7
8
SHLD
J4
REMOTE I/0
TYPICAL USER INPUT CONFIGURATION
"OSC ON"
"INITIALIZE"
USER SU24
USER SUPPLIED COM
"INP2"
"INP1"
"+24 VDC"
"OCOM"
"PCOM"
"ICOM"
"CR1"
"CR2"
WHT
BRN
GRN
YEL
GRY
PNK
RED
BLU
GND
1
2
3
4
5
6
7
8
SHLD
J4
REMOTE I/0
ALTERNET USER INPUT CONFIGURATION
"OSC ON"
"INITIALIZE"
"INP2"
"INP1"
"+24 VDC"
"OCOM"
"PCOM"
"ICOM"
"CR1"
"CR2"
WHT
BRN
GRN
YEL
GRY
PNK
RED
BLU
1
2
3
4
5
6
7
8
SHLD
J4
REMOTE I/0
TYPICAL USER OUTPUT CONFIGURATION
GND
USER SU24 VDC
"READY" OUTPUT
"OSC ON" OUTPUT
"INP2"
"INP1"
"+24 VDC"
"OCOM"
"PCOM"
"ICOM"
"CR1"
"CR2"
WHT
BRN
GRN
YEL
GRY
PNK
RED
BLU
1
2
3
4
5
6
7
8
SHLD
J4
REMOTE I/0
TYPICAL USER OUTPUT CONFIGURATION
GND
USER INPUT COMMON
"READY" OUTPUT (+24 VDC)
"OSC ON" OUTPUT (+24)