Datasheet

K7L-U@/-UD@
15
Connections
K7L-U/UB
Output Circuit Examples
The NPN open-collector output of the K7L-U/UB is isolated from the internal circuits by a photocoupler, so you can use either an NPN open-
collector output or a PNP (equivalent) output.
K7L-UD/UDB
* A Class 2 power supply must be used for the DC power supply to comply with UL standards.
Note: Always use a 3-conductor cable for wiring and connect to terminals 2, 3, and 4
on the Unit. Connect the Sensing Band between terminals 2 and 4 or terminals 3 and 4.
234
423
5
6
7
8
1
4
3
2
K7L-U/UB
Signal
transmission
Level input 1
Level input 2
12 to 24 VDC *
Connecting cable
(0.2 mm
2
min.)
F03-20 Terminal Block
Sensing Band
Example: F03-16PE
OUT+ Open-collector output
OUT- 100 mA at 30 VDC max.
65 65
NPN Output PNP (Equivalent) Output
Load
Load power supply
Load power supply
Load
* A Class 2 power supply must be used for the DC power supply to comply with UL standards.
Note: Always use a 3-conductor cable for wiring and connect to terminals 2, 3, and 4 on the Unit.
Connect the Sensing Band between terminals 2 and 4 or terminals 3 and 4.
8
234
423
5
6
7
4
3
2
1
(4-2)
2-4
(Bottom View)
K7L-UD/UDB
Signal
transmission
Level input 1
Level input 2
Liquid leakage
detection output
Disconnection
detection output
Common
OUT+
BURN OUT+
COM-
12 to 24 VDC *
Commercially available
connecting cable (0.2 mm
2
min.)
Terminal Block
F03-20
Sensing Band
Example: F03-16PE
Terminator
F03-20T
Open-collector output
30 VDC max.
100 mA