IS-300A
6. Interface
6-4
Pin No. Name Description
14
WE2 STOP/
WELD COUNT
WE2 stop input or Weld count input pin.
Switch between functions via the settings on the (9) MODE
SELECT screen described in Chapter 4.
When WE2 STOP is selected
Closing this pin during the WELD2 sequence will switch the
sequence to COOL2.
The welding stop error occurs when the start signal is input
while the WELD2 STOP signal is input.
When this pin is closed before WELD2 welding start after
startup, the current is supplied for at least a control cycle and
WELD2 is stopped to switch the sequence to COOL2.
When WELD COUNT is selected
This pin allows you to determine whether or not the number of
deposited welds has reached the WELD COUNT setting.
20 ms or more is required for receiving the WELD COUNT
input signal.
15
COM COM pin. This pin is internally connected to the GND chassis.
16
1ST
1ST STAGE input pin. Closing this pin will close SOL1 of pin 36
or SOL2 of pin 37. Since the welding sequence does not start,
you can adjust or check the force position.
When the 2ND STAGE pin is closed after this, a welding can be
done at the most appropriate force position.
Maintaining the 1ST STAGE input pin ends even if it is closed,
and the selected SOL signal, SOL1 or SOL2, is turned OFF.
The start signal stabilizing time can be changed in the range of
1 to 20 ms. (Also applied to the 2ND signal.)
17
2ND
2ND STAGE input pin. Closing this pin will start the sequence.
The start signal stabilizing time can be changed in the range of
1 to 20 ms. (Also applied to the 1ST signal.)
18
COM COM pin. This pin is internally connected to the GND chassis.
19
WELD
ON/OFF
Weld ON pin. Close this pin to turn ON the WELD ON/OFF
signal, and open it to turn it OFF.
Leaving this pin open will shut off welding current even when
the sequence operation is performed. Use this pin, for example,
to start the sequence experimentally.
20 ms or more is required for receiving the input signal.
20
THERMOSTAT
Thermostat input pin. Connect to the transformer thermostat or
diode thermostat. Opening the pin will result in a thermostat
error.
20 ms or more is required for receiving the input signal.
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