K-134
Frequency/Rate Meter
K3NR
Connections
I Terminal Arrangement
Input Unit
K3NR-NB
K3NR-PB (PNP Input)
(NPN Input/Voltage Pulse Input)
18 19 20 21 22 23 24 25 26
10
11
12
13 14
15
16
17
1
2
3
4
5
6
7
8
9
Terminal Numbers
Output unit
Input unit
Output
unit
Input
unit
Note: Terminals 7 to 13 are connected internally.
Terminals 7 and 11 are mutually isolated.
+
−
Signal input terminal
12 VDC
80 mA
When inputting the external control signals and input signals
through the open collector:
Transistor Inputs:
ON: Residual voltage must be 3 V max.
OFF: Leakage current must be 1.5 mA max.
The switching capacity must be 20 mA or greater.
When the external signal input is short-circuited, a voltage of
approximately 5 V will be applied to between the terminals 5 to 7
and the COM terminal, and a current of approximately 18 mA
(nominal value) will flow.
100 to 240 VAC
or 12 to 24 VDC
Note:
Check the power supply specifications of the mod-
el used before connecting the power supply.
+12 V
+12 V
590
Ω
590
Ω
820
Ω
820
Ω
+12 V
10
1
2
11
GND
GND
+12 V
590
Ω
820
Ω
3
GND
10 k
Ω
+12 V
590
Ω
820
Ω
4
11
GND
10 k
Ω
+12 V
+12 V
590
Ω
820
Ω
10
1
2
11
GND
GND
GND
590
Ω
820
Ω
External
sensor
power
supply (+)
Input A
Input B
External
sensor
power
supply (
−)
Voltage Pulse Inputs
Input A
Input B
PNP-Inputs
External
sensor
power
supply (+)
Input A
Input B
External
sensor
power
supply (
−)
NPN Inputs
10
11
12
3
4
+12 V
INA
INB
0 V
10
11
12
3
4
INA
INB
GND
10
11
12
3
4
+12V
INA
INB
0 V
+12V
INA
INB
0 V
10
11
12
3
4
Contact
NPN output sensor
PNP output sensor
Contact Output
Voltage Output
PNP Open Collector Output
NPN Open Collector Output
(NPN Linear 2-wire Output)
Note: Connect the + side of the NPN
linear 2-wire input to terminal 1
and the
− side to terminal 11.
Note: With voltage pulse input
not from a 3-wire sensor,
connect the + side to ter-
minal 3 and the
− side to
terminal 11.
Note: When the contact is short-
circuited, a current of approxi-
mately 13 mA will flow at a volt-
age of approximately 12 V.
Input resistance: 10 k
Ω
Voltage pulse output sensor
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