MD Series
4. Name and Functions of Each Section
4-5
Terminal
No.
Description
5
[2nd.STAGE] terminal
2nd.STAGE start input terminal.
Set START SIG. INPUT on the STATUS screen before using this terminal.
(Refer
to
6.(6)
⑰
START SIG. INPUT
.)
To start the weld sequence with the [2nd.STAGE] terminal, set START SIG.
INPUT to 2ND.
To start the weld sequence with the combination of the [1st.STAGE] and the
[2nd.STAGE] terminals, set START SIG. INPUT to 1ST+2ND.
[When START SIG. INPUT is 1ST+2ND]
When the [2nd.STAGE] terminals is closed with [1st.STAGE] terminal closed,
the weld sequence is started in the usual manner.
When the [1st.STAGE] terminal is open, the weld sequence does not start
even if the [2nd.STAGE] terminal is closed.
[When START SIG. INPUT is 2ND]
When the [2nd.STAGE] terminal is closed,
24 V DC is output from the [SOL]
terminal of Terminals 33 and 34, the weld force is applied, and the weld
sequence starts.
6.13.
19.22
[COM] terminals
[COM] terminals to use a contact or NPN transistor.
7
8
9
10
11
Schedule-
select
terminals
SCH 1
SCH 2
SCH 4
SCH 8
SCH 16
Terminal for selection of schedule No.
Functions when the external schedule select is
selected. (Refer to
6.(6)
⑦
SCHEDULE
)
The schedule No is the sum of the SCH Nos. of the
closed terminals. (Refer to Table of schedule Nos.
and corresponding schedule-select terminals.)
12
[PARITY] terminal
Functions when the external schedule select with parity is selected. (Refer
to
6.(6)
⑦
SCHEDULE
)
This terminal permits detection of nonconformance due to disconnection of
the schedule-select signal conductor.
Set so that the sum of the number of closed circuits for the schedule-select
signal conductors and the [PARITY] signal conductor is always an odd
number.
"When setting 2 for schedule No."
Close SCH2 and open the [PARITY] terminal. [The
number of closed circuits is 1.]
"When setting 6 for schedule No."
Close SCH2 and 4, and close the [PARITY] terminal. [The
number of closed circuits is 3.]
14
[PO/CH SEL] terminal
Input terminal for output changeover selection.
(This function is provided only for
MD-B4000B
.)
The direction of the welding current flow when the circuit is open is opposite
to that when the circuit is closed. (Refer to
5.(4)
⑤
Operation of
MD-B4000B
.)
15
[WELD ON/OFF] terminal
When this terminal is opened, the flow of welding current is not allowed
when the weld sequence is started. Use this terminal to tentatively activate
the equipment.
EXAMPLE
Summary of Contents for MD-A8000B-05 Series
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