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11. APPLIED FUNCTION (continued)
12P terminal block (TM 12P)
Pin No.
Signal name
Function
+
㧙
-
EXT1 (Output)
External output
terminal 1
From among the power source preparation, pulse
synchronizing output, EN synchronizing output and AC
synchronizing output functions, select the required one for
use. For the setup method, see 10.1.17 “Internal
Functions”.
*1
+
㧙
-
EXT2 (Output)
External output
terminal 2
+
㧙
-
GAS (INPUT)
Solenoid Valve
Control
The terminals used for controlling the gas solenoid valve by
external signals. (If the terminals are short-circuited, the
gas valve will open.)
*2
+
㧙
-
PLSIN (Input)
Pulse
synchronizing input
signal
Short-circuiting across terminals outputs pulse current. For
details, see 10.1.17 “Internal Functions”.
+
㧙
-
EXT3 (INPUT)
Extra Input Signal
The terminals used for special specifications. These
terminals should not be used for normal use.
*2
+
㧙
-
STOP (INPUT)
Operation Stop
To stop welding externally. Release the wiring between two
terminals to run Operation Stop. Welding machine is
stopped by running Operation Stop. Close the terminals
after turning off the torch switch to restart welding. To avoid
accidental restart, use of a Pushlock Turn reset switch is
suggested.
*2
+
㧙
-
WCR(OUTPUT)
Current Detection
Contact Output of welding current relay used for detection
of welding current. The contacts close while welding current
is flowing.
*3
Precaution for connection with terminals on the terminal block
The wires from the terminal blocks should be twisted for each signals to avoid accidental operation.
Take care that the wires form the terminal blocks do not cross other signal wires from other welding
power source.
*1 Equivalent circuit is as the figure shown right. Maximum capacity of TR is 80V, 100mA. When
connecting such as relay to two terminals, do not exceed 80% of the maximum capacity of TR. (Figure
1)
*2 Equivalent circuit is as the figure shown right. Connect allowable contacts (10mA or more) to two
terminals. (Figure 2)
*3 Rating of the provided relay contacts is 125V AC, 0.5A, 30V DC, 1A. Do not exceed 80% of the
rating of the provided relay contacts.
*4 Be careful that no-load voltage (100V or less) is applied to between the terminals during welding.
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8
Mǡ
2%
64
Figure 1
Figure 2
4.7kΩ