IS-300A
3. Name and Functions of Each Section
3-2
START lamp (green LED)
Stays lit while the start signal is input.
WELD lamp (green LED)
Stays lit while the welding current is flowing.
TROUBLE lamp (orange LED)
Lights up when trouble is detected. At this time, the program unit makes a
peeping sound, and the work done by IS-300A is interrupted.
TROUBLE RESET key
If this key is pressed while the TROUBLE lamp is lit, that lamp is turned off.
The TROUBLE lamp lights up again, however, as long as there is trouble.
Accordingly, remove the cause of the trouble before pressing this TROUBLE
RESET key.
If the TROUBLE lamp lights up while work is being done, press the TROUBLE
RESET key, then input the start signal again, and the work continues.
WELD ON/OFF key
This key is one of those which are required for turning on the READY lamp.
Each time this key is pressed, it is turned ON and OFF alternately. If it is turned
on, the READY lamp lights up, and if the key is turned off, the lamp goes off.
Hold down this key to toggle ON and OFF.
RS-232C/485 connector
For RS-232C/RS-485 external communication
(See 9. External Communication Function).
COIL IN connector
Used to connect the toroidal coil. It is used for the secondary constant-current
effective value control and secondary constant-power effective value control.
(The toroidal coil is optional.)
PROGRAM MONITOR I/O connector
Used to connect Program Unit MA-660A to set the weld schedules and see the
monitored result.
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11
Filter cover
An air filter is provided inside this cover. To be removed for maintenance of the
air filter (See 12. Maintenance).
The fan motor may hurt your finger.
When replacing / cleaning it, be sure to turn off the power supply.
DANGER
!
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