No.P10224
P. 30 / 47
11. APPLIED FUNCTION (continued)
WARNING
Follow the instructions below to avoid electric shock.
Touching charging parts may result in critical electric shock and burn.
●
Do not touch charging parts either inside or outside of the welding machine.
●
Have a qualified person change wiring of welding machine or change-over switch.
●
Be sure to disconnect all of the input power source with the line disconnect switch of the
power box when touching parts inside of the machine.
11.3 External connection with terminals inside of the welding power source with automatic
machine
12P terminal block on P.C.B.P10153Q is located inside the upper cover of the welding power
source. The terminal block outputs the signals shown in the figure below. Break the grommet with
the filter located on the rear side of the machine to lead in the external connecting wires.
12P terminal block
INDICATION
ｶﾞ ｽ ﾊﾞ ﾙ ﾌﾞ 開閉
(
閉 で ｶﾞ ｽ 放 流
)
溶 接 電 流 ﾘ ﾚ ｰ
( W C R ) 接 点
非 常 停 止
( 開 で 停 止 )
電 源 準 備
ﾘ ﾚ ｰ ( D C 2 4 V )
A
V
MEANING
OPENING / CLOSING
GAS SOLENOID
VALVE
(Gas purges when set
to CLOSE.)
WELD. CURR.
RELAY (WCR)
CONTACT
OPERATION STOP
(Stop when set to
OPEN.)
POWER FOR PREP.
RELAY
(24V DC)
AMMETER VOLTMETER
FUNCTION
To open and close the gas
valve by external signal.
(opens the gas valve when
short-circuiting between the
terminals.)
To use for detection of
welding current.
Contact rating is not
more than 110V AC,
0.3A. Contact closes
during weld current
flow.
This terminal is not
available, because it is
used for operation stop
from the robot.
Terminals for preparation
relay. Relay functions, when
there is no abnormalities of
input overvoltage, output
overload, thermal overload,
or open phase and operation
stop while a 24V DC relay is
connected between the
terminals and the control
power switch is on. ( Usable
relay coil current: less than
50mA )
To connect to an
ammeter.
Use the ammeter
for 300A 60mV
shunt.
To connect to a
voltmeter. Use
the voltmeter
having the full
scale of 75V.
+
−
−
+
−
+
CAUTION
Never short-circuit power source preparation relay, ammeter, and voltmeter. This may result in damaging
the welding power source.
