MD Series
4. Name and Functions of Each Section
4-4
Pin No.
Description
11
NG
Fault signal output pins. The circuit is closed when the power supply is
turned on. The circuit is opened in the following cases:
・
When the measured value exceeds the range set on the
COMPARATOR screen and the PRECHECK screen after the weld
sequence is over.
・
When operational trouble occurs.
When a fault occurs, operation is stopped until the reset signal is input.
You can change the function so that the circuit is opened normally and
closed in the case above. (Refer to
6. (6)
⑫
NG SIGNAL TYPE
.)
The contact rating is 24 V DC, 20 mA. (A semiconductor switch is used.)
12
CAUTION
Caution signal output pins.
If a fault occurs in items that are set in the ON position for ERROR
SETTING (Refer to
6. (6)
○
25
ERROR SETTING
) on the STATUS screen,
this circuit is closed after the weld sequence is over.
If a fault occurs, operation can be continued without stopping the
sequence.
To cancel the output, input the reset signal or start signal.
The contact rating is 24 V DC, 20 mA. (A semiconductor switch is used.)
13
OUT COM
COM for output pins; GOOD, NG, END, CAUTION and READY.
14
EXT.COM
Connect Pin 14 to Pin 1 to use an NPN transistor. This pin is used as a
COM pin when a PNP transistor is used (refer to
5. Connection
).
When inputting the external voltage, use 24 V DC.
15
NC
Reserve input pins. (Keep this pin open without connecting, otherwise
the equipment may be damaged.)
19
PARITY
Functions when the external schedule select with parity is selected.
(Refer to
6. (6)
7
SCHEDULE
.)
This pin 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 pin. [The number of
closed circuits is 1.]
"When setting 6 for schedule No."
Close SCH2 and 4, and close the PARITY pin. [The
number of closed circuits is 3.]
EXAMPLE
Summary of Contents for MD Series
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