Omron K3NP User manual

Period Meter K3NP B-193
Timers
Period Meter
K3NP
An Ideal Interface for Easily Measuring the
Time Interval
• 50-kHz input range and 0.08% accuracy for sophisticated
control.
• A wide selection of outputs: relay, transistor, BCD, linear, or
communications.
• Maximum/Minimum value hold, set value write protection, and
more.
• Banks with four comparative output values and four prescale
values.
• Set value teaching, linear output range teaching, and prescale
teaching are available using actual measured values.
• Prescale function available, which displays in units of actual
physical parameters (length, volume, etc.).
• Displays values in hours, minutes, and seconds in operating
modes 2 to 4.
• Built-in sensor power supply (12 VDC, 80 mA).
• Compact 1/8 DIN size.
• Conforms to EMC standards, EN61010-1 (IEC1010-1).
• UL/CSA approved.
®
Model Number Structure
■Model Number Legend
Base Units and Output Boards can be ordered individually or as sets. Refer to the Output Board Combinations table on page 194.
1, 2. Input Sensors Codes
NB: NPN inputs/Voltage pulse inputs
PB: PNP inputs
3. Supply Voltage
1: 100 to 240 VAC
2: 12 to 24 VDC
4. Display
A: Basic
C: Set Value LED Display
5, 6, 7, 8. Output Type Codes
C1: 3 comparative relay contact outputs (H, PASS, L: SPDT)
C2: 5 comparative relay contact outputs (HH, H, L, LL: SPST-
NO; PASS: SPDT)
C5: 5 comparative relay contact outputs (HH, H, L, LL: SPST-
NC; PASS: SPDT)
T1: 5 comparative transistor outputs (NPN open collector)
T2: 5 comparative transistor outputs (PNP open collector)
B2: BCD output (NPN open collector) (see note)
B4: BCD output + 5 transistor outputs (NPN open collector)
L1: Linear output (4 to 20 mA) (see note)
L2: Linear output (1 to 5 VDC) (see note)
L3: Linear output (1 mV/10 digits) (see note)
L4: Linear output, 4 to 20 mA + 5 transistor outputs (NPN open
collector)
L5: Linear output, 1 to 5 V + 5 transistor outputs (NPN open col-
lector)
L6: Linear output, 1 mV/10 digits+ 5 transistor outputs (NPN
open collector)
L7: Linear output, 0 to 5 VDC (see note)
L8: Linear output, 0 to 10 VDC (see note)
L9: Linear output, 0 to 5 VDC + 5 transistor outputs (NPN open
collector)
L10: Linear output, 0 to 10 VDC + 5 transistor outputs (NPN open
collector)
FLK1: Communication RS-232C (see note)
FLK2: Communication RS-485 (see note)
FLK3: Communication RS-422 (see note)
FLK4: RS-232C + 5 transistor outputs (NPN open collector)
FLK5: RS-485 + 5 transistor outputs (NPN open collector)
FLK6: RS-422 + 5 transistor outputs (NPN open collector)
Note: These output types are available on Basic Models only.
1234 12345678
5678
K3NP -
Base Units
K3NP - -
Base Units with Output Boards
K31 -
Output Boards

B-194 Period Meter K3NP
Ordering Information
■Base Unit
■Available Output Board Combinations
Note: For details, refer to the Communication Operation Manual.
Input type NPN/Voltage pulse PNP
Supply voltage 100 to 240 VAC 12 to 24 VDC 100 to 240 VAC 12 to 24 VDC
K3NP-NB1A K3NP-NB2A K3NP-PB1A K3NP-PB2A
K3NP-NB1C K3NP-NB2C K3NP-PB1C K3NP-PB2C
Output type Output configuration Output boards Base units
Basic Set Value
LED Display
Relay contact 3 outputs: H, PASS, L (SPDT) K31-C1 Yes Yes
5 outputs: HH, H, L, LL (SPST-NO), and PASS (SPDT) K31-C2 Yes Yes
5 outputs: HH, H, L, LL (SPST-NC), and PASS (SPDT) K31-C5 Yes Yes
Transistor 5 outputs (NPN open collector) K31-T1 Yes Yes
5 outputs (PNP open collector) K31-T2 Yes Yes
BCD (see note) 5-digit output (NPN open collector) K31-B2 Yes ---
Linear 4 to 20 mA DC K31-L1 Yes ---
1 to 5 VDC K31-L2 Yes ---
1 mV/10 digits K31-L3 Yes ---
0 to 5 VDC K31-L7 Yes ---
0 to 10 VDC K31-L8 Yes ---
Communication boards
(see note) RS-232C K31-FLK1 Yes ---
RS-485 K31-FLK2 Yes ---
RS-422 K31-FLK3 Yes ---
Combination output and
communication boards BCD output + 5 transistor outputs (NPN open collector) K31-B4 Yes Yes
4 to 20 mA + 5 transistor outputs (NPN open collector) K31-L4 Yes Yes
1 to 5 V + 5 transistor outputs (NPN open collector) K31-L5 Yes Yes
1 mV/10 digits + 5 transistor outputs (NPN open collector) K31-L6 Yes Yes
0 to 5 VDC + 5 transistor outputs (NPN open collector) K31-L9 Yes Yes
0 to 10 VDC + 5 transistor outputs (NPN open collector) K31-L10 Yes Yes
RS-232C + 5 transistor outputs (NPN open collector) K31-FLK4 Yes Yes
RS-485 + 5 transistor outputs (NPN open collector) K31-FLK5 Yes Yes
RS-422 + 5 transistor outputs (NPN open collector) K31-FLK6 Yes Yes
Basic Models
These models provide a
present value LED and
front-panel control keys. Can
be connected to any Output
Board, or can be used for
display only without an
Output Board.
Set Value LED Models
These models provide a
present value LED, set value
LED, and front-panel control
keys. Can be connected to
Relay, Transistor, or
Combination Output Boards.

Period Meter K3NP B-195
Timers
Specifications
■Ratings
Note: A K3NP with DC supply voltage requires approximately 1 A DC as control power supply current the moment the K3NP is turned ON. Do not
forget to take this into consideration when using several K3NP units. When the K3NP is not in measuring operation (e.g., the K3NP has been
just turned ON or is operating for startup compensation time), the display will read “00000” and all outputs will be OFF.
Supply voltage 100 to 240 VAC (50/60 Hz); 12 to 24 VDC
Operating voltage range 85% to 110% of supply voltage
Power consumption (see note) 15 VA max. (max. AC load with all indicators lit)
10 W max. (max. DC load with all indicators lit)
Sensor power supply 80 mA at 12 VDC±10%
Insulation resistance 20 MΩmin. (at 500 VDC) between external terminal and case.
Insulation provided between inputs, outputs, and power supply.
Dielectric strength 2,000 VAC for 1 min between external terminal and case.
Insulation provided between inputs, outputs, and power supply.
Noise immunity ±1,500 V on power supply terminals in normal or common mode ±1 µs, 100 ns for square-wave noise
with 1 ns
Vibration resistance Malfunction: 10 to 55 Hz, 0.5-mm for 10 min each in X, Y, and Z directions
Destruction: 10 to 55 Hz, 0.75-mm for 2 hrs each in X, Y, and Z directions
Shock resistance Malfunction: 98 m/s2(10G) for 3 times each in X, Y, and Z directions
Destruction: 294 m/s2(30G) for 3 times each in X, Y, and Z directions
Ambient temperature Operating: −10°C to 55°C (with no icing)
Storage: −20°C to 65°C (with no icing)
Ambient humidity Operating: 25% to 85% (with no condensation)
EMC (EMI) EN61326+A1 Industry
Emission Enclosure: CISPR 11 Group 1 class A: CISRP16-1/-2
Emission AC Mains: CISPR 11 Group 1 class A: CISRP16-1/-2
(EMS) EN61326+A1 Industry
Immunity ESD: EN61000-4-2: 4 kV contact discharge (level 2)
8 kV air discharge (level 3)
Immunity RF-interference: EN61000-4-3: 10 V/m (amplitude-modulated,
80 MHz to 1 GHz) (level 3)
Immunity Fast Transient Noise: EN61000-4-4: 2 kV (power line) (level 3)
Immunity Burst Noise: 1 kV line to line (I/O signal line)
Immunity Surge: EN61000-4-5: 1 kV line to line
2 kV line to ground (power line)
Immunity Conducted Disturbance EN61000-4-6: 3 V (0.15 to 80 MHz) (level 2)
Immunity Voltage Dip/Interrupting EN61000-4-11: 0.5 cycles, 0, 180°, 100% (rated voltage)
Approved standards UL508, CSA22.2;
Conforms to EN61326+A1, EN61010-1 (IEC61010-1)
Conforms to VDE0106/P100 (finger protection) when the terminal cover is mounted.
Weight Approx. 400 g

B-196 Period Meter K3NP
■Characteristics
Note: The linear output range cannot be set when connected to a 1 mV/10-digit Linear Output Board.
Input signal No-voltage contact (30 Hz max., ON/OFF pulse width: 15 ms min.)
Voltage pulse (50 kHz max., ON/OFF pulse width: 9 µs min., ON voltage: 4.5 to 30 V/OFF voltage: −30 to 2 V)
Open collector (50 kHz max., ON/OFF pulse width: 9 µs min.)
Connectable Sensors
ON residual voltage: 3 V max.
OFF leakage current: 1.5 mA max.
Load current: Must have switching capacity of 20 mA min.
Must be able to dependably switch a load current of 5 mA max.
Measuring accuracy
(at 23±5°C) ±0.08%rdg±1 digit
Measuring modes and
ranges Operating mode 1: Passing speed 10 ms to 3,200 seconds Operating mode 2: Cycle 20 ms to 3,200 seconds
Operating mode 3: Time difference 10 ms to 3,200 seconds
Operating mode 4: Elapsed time 10 ms to 3,200 seconds
Operating mode 5: Length measurement 0 to 4G count (32-bit counter)
Operating mode 6: Interval 0 to 4G count (32-bit counter)
Max. displayed digits 5 digits (0 to 99999)
Display 7-segment LED
Polarity display Not available
Zero display Leading zeros are not displayed.
Prescale function Programming via front-panel key inputs. (0.0001 x 10−9 to 9.9999 x 109, decimal point can be set freely)
Can be set using prescale value teaching.
HOLD functions Max. value (peak) hold, Min. value (bottom) hold
External control HOLD (Process value held)
RESET (Maximum/minimum data reset)
BANK (Selection of one bank out of 4 banks of set values)
(Selection of one bank out of 4 banks of prescale values)
Other functions Variable linear output range (for models with linear outputs only) (see note)
Remote/Local processing (available for communications output models only)
Maximum/Minimum value data reset with front panel keys
Comparative output pattern selection
Time unit display
Security
Output configuration Relay contact output (3 or 5 outputs)
Transistor output (NPN and PNP open collector), BCD (NPN open collector)
Parallel BCD (NPN open collector) + transistor output (NPN open collector)
Linear output (4 to 20 mA, 1 to 5 V) + transistor output (NPN open collector)
Communication functions (RS-232C, RS-485, RS-422)
Communication functions (RS-232C, RS-485, RS-422) + transistor output (NPN open collector)
Delay in comparative
outputs (at transistor output) 20 ms max.
Linear output response time 40 ms max.
Degree of protection Front panel: NEMA4 for indoor use (equivalent to IP66)
Rear case: IEC standard IP20
Terminals: IEC standard IP00
Memory protection Non-volatile memory (EEPROM) (possible to rewrite 100,000 times)

Period Meter K3NP B-197
Timers
■Input/Output Ratings
Relay Contact Output
(Incorporating a G6B Relay)
Transistor Output
BCD Output
Note: Logic method: negative logic
Linear Output
Note: For the 1 mV/10-digit output, the output voltage changes for every 40 to 50 increment in the display value.
■Communications Specifications
For details, refer to Communication Operation Manual.
Item Resistive load (cosφ= 1) Inductive load (cosφ= 0.4, L/R = 7 ms)
Rated load 5 A at 250 VAC; 5 A at 30 VDC 1.5 A at 250 VAC, 1.5 A at 30 VDC
Rated carry current 5 A max. (at COM terminal)
Max. contact voltage 380 VAC, 125 VDC
Max. contact current 5 A max. (at COM terminal)
Max. switching capacity 1,250 VA, 150 W 375 VA, 80 W
Min. permissible load
(P level, reference value) 10 mA at 5 VDC
Mechanical life 50,000,000 times min. (at a switching frequency of 18,000 times/hr)
Electrical life
(at an ambient temperature of 23°C) 100,000 times min. (at a rated load switching frequency of 1,800 times/hr)
Rated load voltage 12 to 24 VDC +10%/–15%
Max. load current 50 mA
Leakage current 100 µA max.
I/O signal name Item Rating
Inputs REQUEST, HOLD, MAX, MIN, RESET Input signal No-voltage contact input
Input current with no-voltage input 10 mA
Signal level ON voltage: 1.5 V max.
OFF voltage: 3 V min.
Outputs DATA, POLARITY, OVERFLOW,
DATA VALID, RUN
Rated load voltage 12 to 24 VDC +10%/−15%
Max. load current 10 mA
Leakage current 100 µA max.
Item 4 to 20 mA 1 to 5 V 1 mV/10 digits (see note)
Resolution 4,096
Output error ±0.5% FS ±1.5% FS
Permissible load resistance 600 Ωmax. 500 Ωmin. 1 KΩmin.
Item RS-232C, RS-422 RS-485
Transmission method 4-wire, half-duplex 2-wire, half-duplex
Synchronization method Start-stop synchronization
Baud rate 1,200/2,400/4,800/9,600/19,200/38,400 bps
Transmission code ASCII (7-bit)
Communications Write Comparative set value, prescaling value, remote/local programming, reset control of maximum/mini-
mum values, and other setting mode items excluding communications conditions.
Read Process value, comparative set value, maximum value, minimum value, model data, error code, and
others

B-198 Period Meter K3NP
Connections
■Terminal Arrangement
Input Unit
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 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
model used before connecting the power supply.
Recommended 24VDC power supply;
eg. OMRON S8VS
+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 (−)
Internal circuits
Voltage Pulse Inputs
Input A
Input B
Internal circuits
PNP-input Models
External
sensor
power
supply (+)
Input A
Input B
External
sensor
power
supply (−)
Internal circuits
NPN Inputs
10 11
1234
+12 V INA INB
0 V
10 11
1234
INA INB GND
10 11
1234
+12V
INA INB
0 V
+12V INA INB
0 V
10 11
1234
Contact
NPN output sensor PNP output sensor
Contact Output Voltage Output PNP Open Collector OutputNPN 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 kΩ
Voltage pulse output sensor

Period Meter K3NP B-199
Timers
Output Units
18 19 20 21 22 23 24 25 26 18 19 20 21 22 23 24 25 26
18 19 20 21 22 23 24 25 26
18 19 20 21 22 23 24 25 26
K31-C1: Relay (3 Outputs)
Outputs (5 A max. at 250 VAC)
H PASS L
K31-C2: Relay (5 Outputs)
Outputs (5 A max. at 250 VAC)
K31-C5: Relay (5 Outputs)
Outputs (5 A max. at 250 VAC)
HH PASS L
LLH
HH PASS L
HLL
K31-T1: Transistor (NPN Open Collector)
Outputs (50 mA max. at 24 VDC)
HH H PASS L LL COM
+−
18 19 20 21 22 23 24 25 26
18 19 20 21 22 23 24 25 26
100101102103104
48
104
12 4812 48 12 48 12 48 12
20
1 2 3 4 5 6 7 8 9 10111213141516171819
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
K31-T2: Transistor (PNP Open Collector)
Outputs (50 mA max. at 24 VDC)
HH H PASS L LL COM
K31-B2, -B4: BCD (NPN Open Collector)
(Terminals 32 to 36 are provided only on K31-B4.)
Outputs (50 mA max. at 24 VDC)
HH H PASS L LL COM
COMMON
DATA OVERFLOW DATA VALID RUN COMMON REQUEST MAX. REQ. MIN. REQ. HOLD RESET POLARITY HH H PASS L LL COMMON
K31-L1, L2, L3,-L4, -L5, -L6, -L7, -L8, -L9,
-L10: Linear
(Terminals 21 to 26 are provided only on K31-L4,
-L5, -L6, -L9, -L10.)
L1, L4: 4 to 20 mA
L2, L5: 1 to 5 V
L3, L6: 1 mV/10 digit
L7, L9: 0 to 5 VDC
L8, L10: 0 to 10 VDC
Note: With K31-L4/-L5/-L6/-L9/-L10 models, terminals 19
and 26 are connected internally.
SD
RD
SG
14
12345 678910111213
15 16 17 18 19 20 21 22 23 24 25
K31-FLK1: RS-232C
+−
18 19 20 21 22 23 24 25 26
RDA SDA
RDB SDB
SG
RS-422
6
2345
7896
12345
789
1
K31-FLK2, -FLK5: RS-485
(Terminals 21 to 26 are provided only on K31-FLK5.)
HH H PASS L LL COM
RS-485
Terminator
ON
OFF
Outputs (50 mA max. at 24 VDC)
K31-FLK3, -FLK6: RS-422
(The right connector is provided only on K31-FLK6)
ON
OFF
K31-FLK4: RS-232C + Transistor (NPN Open Collector)
RS-232C
LL
HH
L
COM
H
PASS
Terminator
RS-422
•D-sub 37P Connectors for BCD output (attachment)
Plug: XM2A-3701
Hood: XM2S-3711
•D-sub 25P connectors for RS-232C output (K31-FLK1) (order
separately)
Plug: XM2A-2501
Hood: XM2S-2511
•D-sub 9P connectors for RS-422 output (K31-FLK3 and K31-
FLK6) (order separately)
Plug: XM2A-0901
Hood: XM2S-0911
•D-sub 9P connectors for RS-232C output (K31-FLK4) (order
separately)
Plug: XM2D-0901
Hood: XM2D-0911
Output NPN Tr.
(50 mA max. at 24 VDC)
Output NPN Tr.
(50 mA max. at 24 VDC)
L
H
PASS
HH
9
4321
87
6
5
LL
RD
SD
SG
COM
9
4321
87
6
5

B-200 Period Meter K3NP
■Block Diagram
Input circuit
Sensor A
Sensor B
GND
Control input
LED
Frequency measurement circuit
Waveform adjustment circuit
8-bit microcomputer
Control input circuit
Power supply
for sensor
Control input
circuit
Control power
supply Power supply
circuit
Frequency
measurement
circuit
Waveform
adjustment
circuit
Voltage stabilizing
circuit
Voltage stabilizing
circuit
Voltage stabilizing
circuit
Key
switch
8-bit
microcomputer Output
circuit
Power supply for
sensor (input circuit)

Period Meter K3NP B-201
Timers
Operation
■Main Functions
Output Pattern Selection c-out
The patterns of comparative output are selectable according to the
level change. Select the pattern according to the application.
Note: The following setting conditions must be satisfied, otherwise no
zone output will turn ON correctly.
LL < L < H < HH
Linear Output Range lset
A linear output range can be set as required. A value corresponding
to the maximum output value and that corresponding to the minimum
output value can be set.
Remote/Local Selection r-l
Select remote programming when performing all settings through the
host devices and select local programming when performing settings
through key operation.
Prescaling
Input pulses are converted into desired values.
Standard Output
Set value HH
Set value H
Set value L
Set value LL
Comparative output HH
Comparative output H
PASS
Comparative output L
Comparative output LL
Zone Output
Set value HH
Set value H
Set value L
Set value LL
Comparative output HH
Comparative output H
PASS
Comparative output L
Comparative output LL
Set value HH
Set value H
Set value L
Set value LL
Comparative output HH
Comparative output H
PASS
Comparative output L
Comparative output LL
Level Output
20 mA
4 mA
Display
Output
Lower
limit Upper limit
For the 4- to 20-mA
output type

B-202 Period Meter K3NP
■BCD Output Timing Chart
A request signal from an external device (such as a Programmable Controller) is required to read BCD data.
Single Sampling Data Output
Approximately 30 ms after the REQ signal rises, a sample is taken and the DATA VALID signal is output. Read the data when the DATA VALID
signal is ON.
The DATA VALID signal will turn OFF in 40 ms, and then in 16 ms, the data will go OFF.
Models with a BCD output have an open collector output configuration so that wired-OR connection is possible.
Continuous Data Output
The K3NP outputs each measurement at an interval of 64 ms when a REQ signal is ON continuously.
If the HOLD signal is ON at the moment the DATA output is switched from Data 1 to Data 2 or vice versa, the output BCD data will be either Data
1 or Data 2 according to the timing of the HOLD signal. However, output data will never be below.
40 ms
16 ms
All data "high" All data "high"Data
Approx. 30 ms
DATA
DATA
VALID
REQ.
Max.
Min.
Pulse with a width of no less than 20 ms.
(no more than 50 ms.)
(1) (2) (3)
***
K3NP (1)
K3NP (2)
K3NP (3)
DATA
Programmable
controller
DATA (incl. POL and OVER)
and DATA VALID are wired-OR
processed.
The RUN, HH, H, PASS, L, and
LL signals are always output
regardless of the status of the
REQ signal. Do not OR-wire
these signals.
REQ.
(1)
REQ.
(2)
REQ.
(3)
DATA
VALID
*The period between the DATA VALID signal and the
REQ signal should be no less than 20 ms max.
40ms 40ms
64ms 64ms
24ms 24ms
All data "high"
DATA Data 1 Data 2
REQ.
Max.
Min.
DATA
VALID
Approx.
30 ms