MEA-100B
10. Interface
10-5
Terminal No.
Description
27
[COM]
Common terminal for input signals.
28
[START
(1ST)]
Input terminal for [START] signal and 1ST STAGE signal.
This circuit must be closed to supply a welding current in [READY]
mode.
The specific operation depends on [SM] setting of the #1 screen in the
SET2 screen, as shown below (See 9. (2)
):
SM: 0–2
→ Welding
starts upon confirmation of input of the start
signal.
SM: 3
→ Th
e 2-stage start mode is selected. When the 1ST
STAGE signal is input, the Weld Force signal is output.
Welding begins on input of the 2ND STAGE signal.
Note: For timing details, see
11. Timing Chart
.
29 [SCH.1]
30 [SCH.2]
31 [SCH.4]
32 [SCH.8]
33 [SCH.16]
Input terminal for [SCH] signal.
The specific operation depends on [SS] setting of the #1 screen in the
SET2 screen, as shown below. (For [SCH] signal, see 7. (4).)
SS: 0–1
→ Sum of the
SCH numbers corresponding to the closed
terminals is taken as the selected schedule number.
SS: 2
→ The SCH
number corresponding to the closed terminals
is taken as the selected schedule number.
SS: 3
→ The sche
dule numbers are set using keys on the panel.
These terminals are disabled.
Note: For timing details, see
11. Timing Chart
.
Note: Schedule 1 is selected if no external schedule signals are input.
34
[2ND
STAGE]
Input terminal for 2ND STAGE and parity signals.
The specific operation depends on the start mode setting (SM) and the
start bit setting [SS], as shown below (See 9. (2)
):
Note: For timing details, see
11. Timing Chart
.
35
[OPTION]
Extension terminal
Do not connect to this terminal.
SM
SS
Settings
3
0, 2, 3
The 2-stage start mode is selected. When the 1ST
STAGE signal is input, the solenoid is output.
Welding begins on input of the 2ND STAGE signal.
0–2
1
The parity check mode is selected. Welding is
initiated by a binary number with odd parity check
(See 7. (4)).