MAWA-050A
2. Installation and Connections
2-27
(3) -3. External input/output signal table
(3) -3-1. User input terminals
On the external input/output setting screen, input terminal Nos. 22 and 23 (IN1 and IN2) can be
allocated from the following signals. (Refer to “4. (8) External I/O Setting Screen.”)
For wiring connection, refer to the connection diagram in “(3)-2-1. Input connector.”
Terminal name
Explanation
01.GAS FLOW
When the optional digital flow meter is connected, “E25 Gas flow error” occurs
unless the sensor input is turned on at a gas purge.
02.H-ORG
When the optional servo motor type welding head is connected, the servo
motor type welding head is returned to the origin by inputting H-ORG.
03.H-HEAD UP
When the optional servo motor type welding head is connected, the torch of
the servo motor type welding head is moved to the start point by inputting
H-HEAD UP.
Caution
When setting “01.GAS FLOW” for the user input with the optional digital flow meter
(FSM2-NAF100-S06ARN-P70) connected, the argon gas flowrate during welding is detected and
“E25 Gas flow error” occurs.
Since the detection response time (response time of the solenoid valve or the digital flow meter) is
not in time when the pre-flow time is shorter than 300 ms, an arc discharge may occur for a
moment. (Refer to the timing chart “The argon gas flowrate is abnormal.”)
When you want to detect the Gas flow error before an arc discharge occurs, set the pre-flow time
of the welding conditions to 300 ms or more so that an arc discharge may not occur.
Connection example of the digital flow meter
D-Sub37(Female)
INT.24V
EXT.COM
WELD ON
IN1
COM
EXT.COM
INT.24V
EM1
EM1_COM
EM2
EM2_COM
0V
INT.24V
22
37
35
36
16
18
17
19
24
25
21
I/O Input
BRN
BLU
BLK
Digital flow meter
