MAWA-050A
2. Installation and Connections
2-18
Terminal
No.
Terminal name
Explanation
19
EM1_COM
Common of the emergency stop 1 input terminal.
20
TORCH
SELECT
Torch selecting signal input terminal.
When this terminal is open, torch 1 is used.
When this terminal is closed, torch 2 is used.
21 WELD
ON
Welding power ON/OFF changeover input terminal.
When this terminal is closed, WELD ON is executed. (*2)
22 IN1
User input terminal. For each terminal, the following settings can be
selected.
01. GAS FLOW 02. H-ORG 03. H-HEAD UP
(Refer to “2. (3)-3-1. User input terminals.”)
23 IN2
24
0V
Power supply for the gas flow rate sensor 0 V
25
24V
Power supply for the gas flow rate sensor 24 V
35
EXT.COM
Input terminal common.
36
INT.24V
24 V output
37
COM
Input terminal common.
*1: For resetting emergency stop, turn off both of EM1 and EM2, and then turn them on
simultaneously.
*2: To output the welding current, close the WELD ON terminal. (Refer to the terminal 21 of “2.
(3)-2-1 Input connector.”)
When the WELD ON terminal is opened, the welding current is not output and the welding result
on the Monitor screen is displayed as NG.
When WELD is set to OFF on the Maintenance screen in 4. (18), the welding current is not
output even if the WELD ON terminal is closed. To output the welding current, set WELD to ON
on the Maintenance screen and open the WELD ON terminal.
*3: In addition to the normal welding, the PURGE input is used for gas flow check and manual
control of gas.
