6 External Input and Output
76
6.3.2
Contact Input
This unit is equipped with contact inputs as shown below. They are enabled when set to the
contact point, and the following operations are possible (refer to "5.4.2 Signal Input Setting"
(page 39)).
Allocations for contact input terminals are as follows.
Specifications for contact input are as follows.
Note
Do not connect wiring with voltage to the input terminal. Doing so may cause a malfunction.
If the input timing is less than 3 seconds, the contact input may not be accepted. Make sure to
allow more than 3 seconds for contact ON time.
Item
Description
Input timing
NO SAMPLE FLOAT
SWITCH
Detects NO SAMPLE using
the built-in float switch.
Starts when turned ON (short circuit) for more than 5
seconds after being OFF (open).
TIME CORRECTION
Accepts time corrections.
Accepts time corrections when turned ON (short circuit)
for 3 to 10 seconds after being OFF (open).
Terminal No.
Output No.
Allocation
7
8
I-1(+)
I-1(
)
Float switch
21
22
I-2(+)
I-2(
)
Input time correction
Signal type
Input and output
circuit
Specifications
Contact signal
input
“a” contact signal input without voltage
(open collector output is possible)
Insulated input (common to (
) side)
ON resistance: Max. 100
Open voltage: 5.5 V DC
Short circuit current: Max. 5 mA
Photo
coupler
