Page 1
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
1
2345678
5 678
K3NP -
Base Units
K3NP - -
Base Units with Output Boards
K31 -
Output Boards
Page 2
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.
Page 3
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 MΩ min. (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/s
2
(10G) for 3 times each in X, Y, and Z directions
Destruction: 294 m/s
2
(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
Page 4
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)
Page 5
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 Ω max. 500 Ω min. 1 KΩ min.
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
Page 6
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 1 1
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 terminal 3 and the − side to
terminal 11.
Note: When the contact is short-
circuited, a current of approximately 13 mA will flow at a voltage of approximately 12 V.
Input resistance: 10 kΩ
Voltage pulse output sensor
Page 7
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
H
LL
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
10
0
10
1
10
2
10310
4
48
10
4
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
POLARITYHHH
PASSLLL
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
12345678910111213
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
789
6
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
Page 8
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
Wavefo rm
adjustment
circuit
Voltage stabilizing
circuit
Voltage stabilizing
circuit
Voltage stabilizing
circuit
Key
switch
8-bit
microcomputer
Output
circuit
Power supply for
sensor (input circuit)
Page 9
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
Page 10
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 VA LID
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
Page 11
Period Meter K3NP B-203
Timers
Example of Connection to Programmable Controller
24 VDC
2. 1
3. 2
4. 4
5. 8
10
0
COM
240 Ω
240 Ω
240 Ω
240 Ω
+5 V
+24 V
0 V
COM
(0 V)
30. RESET
31. POLARITY
26. REQUEST
25. COMMON
24. RUN
1. COMMON
IN
IN
IN
IN
IN
IN
OUT
OUT
K3NP
Transistor Output Boards
DC power supply*
Internal circuit
Internal circuit
Internal circuit
23. DATA VALID
(Polarity: +, −)
PC (SYSMAC)
DC Input Unit
* Recommended
Power supply;
eg. OMRON S8VS
Page 12
B-204 Period Meter K3NP
Example of Connection to Display Unit
V
O
SEC
2.1
3.2
4.4
5.8
10
0
240 Ω
240 Ω
240 Ω
240 Ω
+5V
V
O
D
C
B
A
DP
LE
8
V
O
D
C
B
A
DP
LE
8
V
O
D
C
B
A
DP
LE
8
10
2
K3NP
1.COMMON
23.DATA VALID
24.RUN
25.COMMON
26.REQUEST
30.RESET
31.POLARITY
10
1
Connected
(Polarity: +, −)
M7E-01D@N2 or M7E-01H@N2
M7E Digital Display Unit
Page 13
Period Meter K3NP B-205
Timers
■ Output Operation Timing in RUN Mode (Relay or Transistor Outputs)
The following timing chart is for a 5-comparative Output Board when the standard output pattern in selected.
Note: Because measuring is not continuous, the comparative output turns ON when the measuring operation is completed.
■ Operating Modes
The K3NP provides 6 operating modes for converting input pulses to display values. The mode can be selected via key operations on the front
panel.
The time between pulses or the pulse ON time is measured using the
internal system clock, and time and other display values are calculated accordingly.
The time (T) between the INA pulse and the INB pulse is counted
using the internal system clock.
If the count between the pulses is 100,000, then
T = System clock pulse (0.5 µs) x 100,000
= 0.05 s
For operating mode 1 (Passing Speed), 1/T x 60 (m/min) is used.
The display value is thus 1/0.05 s x 60, or 1,200 (m/min)
%%%%%
0
HH set value
H set value
L set value
LL set value
HH comparative output
H comparative output
PASS output
L comparative output
LL comparative output
RESET
Reset display
Display
Display value
INA
INB
T
Example: F1 Passing Speed
System
clock
Operating mode no. Use
01 Passing speed
02 Cycle
03 Time difference
04 Elapsed time
05 Length measurement
06 Interval
Page 14
B-206 Period Meter K3NP
Operating Mode 1: Passing Speed
The inverse of the time between input A coming ON and input B
coming ON is multiplied by 60 and displayed.
A 20-ms recovery time (T
R
) is required at the start of each measure-
ment operation.
Units: mm/s; m/s; m/min; km/h; etc.
Application Example
Operating Mode 2: Cycle
The period (T) of input A is displayed.
The K3NP is in measuring operation during every other period of
input A ON.
Units: s; min; h, min, s; min, s, 1/10 s; etc.
Application Example
Operating Mode 3: Time Difference
The time between input A turning ON and input B turning ON is displayed.
A 20-ms recovery time (T
R
) is required at the start of each measure-
ment operation.
Units: s; min; h, min, s; min, s, 1/10 s; etc.
Application Example
Operating Mode 4: Elapsed Time
The time (T) that input A is ON is displayed.
A 20-ms recovery time (T
R
) is required at the start of each measure-
ment operation.
Units: s; min; h, min, s; min, s, 1/10 s; etc.
Application Example
T
1
T
2
T
3
T
4
1/T1 x 60 1/T2 x 60 1/T4 x 60
T
R
T
R
T
R
Input B
Hold input
Display
Input A
Measuring the Speed of Workpieces between Points A
and B
T1T
2
T3T
4
T
5
T
1
T
2
T
5
Hold input
Display
Input A
Measuring the Rate at which Parts are Fed
T
1
T
2
T
3
T
4
T
1
T
3
T
4
T
R
T
R
T
R
Input B
Hold input
Display
Input A
Measuring the Time Required
for Workpieces to Pass from
Point A to Point B
Can be Used with Prescaling to Measure Lengths of
Steps
T
1
T
2
T
3
T
1
T
3
T
R
T
R
Hold input
Display
Input A
Monitoring the Time That
a Press is Activated
Controlling the Time
That a Valve is Open
Communication
output
Page 15
Period Meter K3NP B-207
Timers
Operating Mode 5: Length Measurement
The number of pulses received on input A while input B is ON is displayed.
Units: mm; cm; m; etc.
Application Example
Operating Mode 6: Interval
The number of pulses received on input A between two pulses on
input B is displayed.
Units: mm; cm; m; etc.
Application Example
123456 12345
65
Input B
Hold input
Display
Input A
Measuring Workpiece Length
BCD
To PC
123456 123456
66
Input B
Hold input
Display
Input A
Measuring Slot Spacing
H
PA SS
L
Pass/fail
determination
Page 16
B-208 Period Meter K3NP
Nomenclature
Name Functions
1. SV display Displays the set value or parameter. Available for Set Value LED Models only.
2. PV display Displays the process value in addition to the maximum value or parameter.
3. Comparative output
status indicators
Displays the status of comparative output.
4. SV display status Indicates which comparative set value is currently on the SV display.
5. ESC Key Used to return to the RUN mode from the Setting, Protect, or Maintenance mode.
The process value, maximum value, or minimum value to be displayed can be selected.
6. Mode Key Used to enter the Setting mode.
Used to allow the PV display to indicate set values sequentially. Available for Basic Models only.
Used to indicate set values sequentially on the SV display. Available for Set Value LED Models only.
7. Status indicators HOLD:Lit when HOLD input is ON.
MAX:Lit when the maximum value is indicated on the PV display.
MIN:Lit when the minimum value is indicated on the PV display.
PROG:Lit or flashes while parameters are being set.
8. Teaching indicator Lit when the teaching function is enabled and flashes when the K3NP is in teaching operation.
9. RESET/TEACH Key The measurement data, maximum value, and minimum value are reset by pressing this key.
Teaching is available when the teaching function is enabled.
10. Up Key and Shift Key The digit being set is scrolled by pressing the Shift Key. The set value increases by one whenever the Up Key is
pressed.
1. SV Display
2. PV Display
4. SV Display Status
5. ESC Key
6. Mode Key
7. Status Indicators
8. Teaching Indicator
9. RESET/TEACH Key
10. Up Key and Shift Key
3. Comparative Output
Status Indicators
Page 17
Period Meter K3NP B-209
Timers
Engineering Data
Derating Curve for Sensor Power Supply
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Max. current (mA)
Ambient temperature (°C)
Note:
The derating curve shown is for standard installation.
The derating curve depends on the mounting direction.
75
120
45
+0.8
−0
92
+0.8
−0
14.2
8.2
Panel Cutouts
PV Display
Note: The K3NP uses M3.5 terminals.
A terminal cover is provided.
Page 18
B-210 Period Meter K3NP
Precautions
!WARNING
Do not touch any of the terminals while the power is being supplied. Doing so may result in electric shock.
!Caution
Do not allow metal objects or conductive wire cuttings to enter the
product. Doing so may result in electric shock, fire, or malfunction.
!Caution
Do not attempt to take the product apart or touch any internal parts
while the power is being supplied. Doing so may result in electric
shock.
!Caution
Do not use the product in locations subject to flammable or explosive gases. Doing so may result in explosion.
!Caution
The lifetime of output relays varies greatly with the switching capacity and conditions. Consider the actual operating conditions,
and use the relays within the rated load without exceeding the
number of operations specified as the rated electrical life. Using
relays beyond their rated electrical life may result in contact deposit or burning.
!Caution
Do not use loads exceeding the rated value. Doing so may result
in damage or burning.
!Caution
Use a power supply voltage within the specified range. Not doing
so may result in damage or burning.
!Caution
Use settings that are appropriate for the control system. Discrepancies between the settings and the actual control conditions may
result in unexpected operation leading to damage or accidents.
!Caution
Be sure to tighten terminal screws to the specified torque.
Specified torque for M3.5 screws: 0.74 to 0.90 N·m
Loose screws may result in burning or malfunction.
■ Application Precautions
• Use a power supply voltage within the specified range. Not doing
so may result in damage or burning.
• Be sure to perform wiring correctly, verifying the terminal names.
Incorrect wiring may result in burning.
• Be sure to tighten the screws on the terminal block properly.
• Do not connect anything to unused terminals.
■ Correct Use
Long-term Use
Use all products within the specified ranges. When using inside a
control panel, ensure that the temperature around the product, rather
than the temperature around the control panel, does not exceed the
specified temperature range. Electronic products, such as this product, have a lifetime that is dependent on the lifetime of internal electronic components, as opposed to the lifetime related to the number
of relay switching operations. The lifetime of these components varies with the temperature; the higher the temperature, the shorter the
lifetime. Therefore, the product lifetime can be extended by lowering
the internal temperature of the product.
When several Period Meters are mounted close together (either horizontally or vertically), the internal temperature of the Period Meters
may rise, leading to a reduction in the lifetime. In this case, take measures to cool the Period Meters, such as installing fans. Ensure, however, that the terminals are not cooled as this may lead to incorrect
measurement.
Operating Environment
Do not use the product in locations subject to temperatures or humidity levels above the specified ranges, or in locations subject to condensation.
Do not use the product in locations subject to severe shocks or vibrations.
Separate the product from machines that generate high-frequency
noise, such as high-frequency welding machines and high-frequency
sewing machines.
Do not use the product in locations subject to dust or corrosive
gases.
Do not use the product outdoors or in locations subject to direct sunlight.
Operation
When using models with comparative outputs, if an error occurs at
the Period Meter, comparative output may not operate correctly. We
therefore recommend that you consider providing an alarm system
separately as a countermeasure.
Parameter settings that allow the functions to operate properly are
made, using the setting menu, at the factory prior to delivery. When
using the product, change the settings as required for the application.
Mounting
Recommended panel thickness is 1 to 3.2 mm.
Panel
Page 19
Period Meter K3NP B-211
Timers
Attach the mounting bracket on the left and right sides of the Period
Meter as shown in the illustration above and gradually tighten each
screw evenly in turn by considering the balance of the tightening
force until the ratchets start slipping without being further tightened.
Mount the Period Meter as horizontally as possible.
Waterproof Specifications
Products for which the degree of protection is not specified or models
with IP@0 degree of protection do not have waterproof specifications.
Noise Countermeasures
Separate the product as far as possible from machines that generate
high-frequency noise, such as high-frequency welding machines and
high-frequency sewing machines, and machines that generate
surges.
Attach surge absorbers or noise filters to noise-generating peripheral
devices (in particular, devices with inductance such as motors, transformers, solenoids, and magnet coils).
In order to prevent inductive noise, wire the lines connected to the
terminal block separately from power lines carrying high voltages or
large currents. Also, do not wire in parallel to, or in the same cable as
power lines. There are other methods that are effective for reducing
noise, such as running wires along ducts and using shield lines.
When using a noise filter for the power supply, check the voltage and
current and install as close to the Period Meter as possible.
Inductive Noise Countermeasure for Input
Line
Analog Input
Temperature Input
In order to prevent the influence of induction, separate the lead wire
joining the temperature sensor and the Period Meter from power and
load lines.
Using the product near radios, television sets, or other wireless
devices may result in reception interference.
Unit Label (Provided)
No product is shipped with the unit label attached. Select a unit label
from the sheet provided and attach it to the Period Meter.
+
−
Line filter
Power input
Power input
Surge absorber
Signal
input
K3NP
K3NP
+
−
Two-conductor shield wire
Signal
input
Processor
Page 20
B-212 Period Meter K3NP
Operating Procedures
■ Operation in RUN Mode
Reset
The initial status before any measurements were made can be
returned to using the RESET/TEACH Key . (This status is
referred to as the "reset status.") The status of the K3NP when it is in
the reset status is as follows:
Display: All 5 digits in the PV display are 0 (00000).
Comparative output: HH, H, PASS, L, and LL outputs are all OFF.
Maximum/minimum values: These values are reset.
Checking the Bank Number
Press the Shift Key for 1 s min. during measurement to display
the bank number in the PV display. (The display will return to the
measurement value if there is no key operation for 5 seconds.)
Bank Selection
• Switch between the comparative set values and the prescaling val-
ues for banks 1 to 4 using the BANK 1 and BANK 2 signals.
• The relationship between the BANK 1 and BANK 2 signals and the
bank numbers is shown in the following table.
Note: If the prescale value bank is set to OFF, then the prescaling val-
ue for each bank is fixed.
Confirming Maximum and Minimum
Values
Press the ESC Key during measurement to display the maximum and minimum values.
Press the RESET/TEACH Key while the maximum or minimum
value is displayed to reset the value. (This is not possible, however, if
maximum/minimum value reset was prohibited in Protect Mode.)
Confirming and Setting Comparative Set Values
When the measurement value, the maximum value, or the minimum value is displayed, press the Mode Key repeatedly to display the comparative set values in the order HH, H, L, and LL. (With models that have an SV display, the comparative set values are displayed in the SV display.)
Note: When a comparative set value is displayed, it can be changed using the Up Key and Shift Key (if key protection is OFF).
RESET
/TEACH
Bank
number
BANK 1 BANK 2 Comparat
ive set
value
Prescaling
value
1OFFOFFsU1.** ps 1.**
2ONOFFsU2.** ps2.**
3OFFONsU3.** ps 3.**
4ONONsU4.** ps4.**
BANK1
BANK2
COM
Measurement
value
Maximum
value
Minimum
value
RESET
/TEACH
Measurement value
Maximum value
Minimum value
Comparative
set value HH
No key operation for 5 s
No key operation for 5 s No key operation for 5 s
No key operation for 5 s
Comparative
set value H
Comparative
set value L
Comparative
set value LL
Page 21
Period Meter K3NP B-213
Timers
■ Setting Procedures
The K3NP has four modes: RUN mode for normal operations, Setting mode for initial parameter input, Protect mode for lock-out configuration, and
Maintenance mode for initializing set values. The parameters that are accessible on any individual K3NP will vary depending on the Output Board
installed. Refer to the K3NP Operation Manual for details.
RUN Mode: Remains in this mode under normal operation.
The process value or the max./min. value can be monitored.
Using the front panel keys, the comparative set value can be changed and max./min. values reset can be performed.
Setting Mode: Used for making initial settings.
Includes settings for four menus (Set value (sUset), prescaling (pscl), setup (set up), option (opt)) and the output test.
Protect Mode: Used for locking the front key operation or parameter changes.
Maintenance Mode: Used for initializing set values.
sUset - Program set values
s.bank Select bank no. of set values
sU*.hh Enter set value HH of bank 1
sU*. h Enter set value H of bank 1
sU*. l Enter set value L of bank 1
sU*. ll Enter set value LL of bank 1
Note: The above is an example when the bank number is set to 1.
pscl - Display prescaling
p.bank Select bank no. of prescale values
ps*.ax Set the mantissa (X) of the prescale value of input A
ps*.ay Set the exponent (Y) of the prescale value of input A
decp.* Select decimal point
Note: The above is an example when the bank number is set to 1.
setup - Program operating mode/input sensor/serial communications
func Specify operating mode
ina Select a sensor type of input A
inb Select a sensor type of input B
time Select the display time unit
u-no Enter the unit no. for the host
bps Select the baud rate
len Select the word bit length
sbit Select the stop bits
prty Select the parity bits
opt - Supplementary settings related to display or control
c-out Select the output pattern
lset.h Enter the upper limit (H) of linear output range
lset.l Enter the lower limit (L) of linear output range
r-l Select the remote/local programming
test - Generating simulated input for testing the output function
prot - Program lock-out configuration
all Enable all key protection
sUset Enable set value change prohibition
reset Enable prohibition of all the measurement data and
max./min. value reset using the front panel keys
secr Specify the menus to be protected against setting in the
setting mode
1 s
1 s
+
+
ESC
ESC
ESC
ESC
Power ON
RUN mode
Setting mode
Maintenance mode
Protect mode
When power is ON
Page 22
B-214 Period Meter K3NP
■ Initial Settings ■ Parameters
−
0
−
0
−
0
−
0
h.mm.55
h.mm.55
Setting
−
Power ON
Measurement starts.
Press the Mode Key for 1 s min. to move to the Setting
Mode.
Select the setup menu ( ) with the Mode Key
and set the operating mode, the input type, the time unit, and
other settings.
If required, set a prescale value in the prescaling menu
( ).
Set comparative set values in the set value menu ( ).
Make settings in the option menu ( ) as required.
If necessary, generate simulated input for testing the output
function in output test ( ).
After completing all the settings, press the
ESC Key to return to RUN Mode.
Prescaling
To display the passing speed between two points based on
input pulses, the time measured internally must be multiplied
by a fixed coefficient. The value of this coefficient will depend
on the distance between the two points and the display unit.
This coefficient is called the "prescale value." (Refer to the
Operation Manual for details.)
Time Unit Setting
Meaning
Set in the prescaling menu
Seconds
Minutes
Minutes and seconds
Hours, minutes, and seconds
Selecting the Sensor Type
NO: Voltage
pulse H
NC: Voltage
pulse L
No-contact or
voltage pulse
input
Contact input
Note: If there are large discrepancies
in the display select or .
Note, however, that the
maximum counting frequency is
30 Hz.
Set value menu
1 s
Setting Mode
Output test
Power ON
RUN Mode
Refer to Operation in RUN Mode.
Press the ESC Key and Up Key
for 1 s.
1 s
Comparative set
value bank
Comparative
set value HH
No key operation for 5 s
(See note 1.)
Comparative
set value H
Comparative
set value L
Comparative
set value LL
No key operation for 5 s
No key operation for 5 s
No key operation for 5 s
No key operation for 5 s
(See note 1.)
(See note 1.)
(See note 1.)
Page 23
Period Meter K3NP B-215
Timers
//
//
1200/2400/4800/
9600 /19200/38400bps
0
0
/
func
func
f1
f1
−
−−
−
−
−
−
−
−
−
7 /8bit
1/ 2 bit
4: This parameter will be displayed if F1, F3, F5, or F6 is
selected.
Protect Mode
Prescaling menu
Setup menu
Prescale value
bank (See note 2.)
Decimal point
Operating
mode
Parity bits
Time unit
(See note 3.)
Communications
unit number
Baud rate
Word bit length
Stop bits
Input A
sensor type
Input B sensor
type (See note 4.)
Next parameter
PROG flashes.
Changing Set Values
Setting Status
5cal
5cal
p5cl
p5cl
1 s
Input A prescale
value mantissa
Input A prescale
value exponent
No key operation for 5 s
(See note 1.)
(See note 1.)
No key operation for 5 s
No key operation for 5 s
No key operation for 5 s
1 s
No key operation for 5 s
By pressing the Shift Key while a parameter is displayed, the set value can be
changed (setting status). The PROG status indicator will flash. Change the set
value as required, and press the Mode Key to register the setting and move to
the next parameter.
If there is no key operation for
5 seconds, the setting is
registered and the parameter
is displayed again.
Change the set value
using the Up Key and
the Shift Key .
Settings displayed in reverse colors are defaults.
• In the Setting Mode, measurement stops and all
outputs turn OFF.
• Depending on the output type of the model used,
some parameters (indicated in ) are not displayed (and hence cannot be set).
• If the operating mode is changed, the prescale val-
ues and linear output range parameters will be reset to their initial values. Set the operating mode
first.
Note 1: A number in the range 1 to 4 will be displayed.
2: Set a number in the range 2 to 4 to set more than one
prescale value (i.e., to display measurements in more than
one unit).
3. These parameters will be displayed if F2, F3, or F4
(i.e., operating mode 2, 3, or 4) is set. If a parameter other than
is set, the prescaling menu ( ) will not be displayed.
(See note 1.)
Option menu
Output pattern
Remote/local programming
1 s
No key operation for 5 s
No key operation for 5 s
No key operation for 5 s
No key operation for 5 s
Upper limit (H) of
linear output range
Lower limit (L) of
linear output range
No key operation for 5 s
No key operation for 5 s
No key operation for 5 s
No key operation for 5 s
No key operation for 5 s
No key operation for 5 s
No key operation for 5 s
Page 24
B-216 Period Meter K3NP
Note: If there is no key operation for 5 seconds, the setting is automatically registered.
prot
prot
all
all
sUset
sUset
reset
reset
secr
secr
kpon
kpon
kpoff
kpoff
RUN Mode
Press the ESC Key
and Up Key for 1 s.
· Measurement stops in Protect Mode.
· Depending on the output type of the model used, some parameters (indicated in ) are not
displayed (and hence cannot be set).
Protect menu
All key protection
Set value change
prohibition
Reset prohibition
Menus protected
in Setting Mode
(See
note.)
Displayed only for
models with
comparative outputs.
Note: Press the Shift Key to make it
possible to set or change parameters.
Key-protection ON:
Key-protection OFF:
1 s
Protect Mode
Power ON
Menu display Parameter display Meaning of parameter Setting range Setting key
(See note.)
All key protection:
All key operations are prohibited in
RUN Mode. (If all key protection is
ON, only the key for going to Protect
Mode is enabled.)
Use the Up Key to
change the setting.
Use the Mode Key
to enable the setting and move to the
next parameter.
Set value change prohibition:
Changes to comparative set values
are prohibited in RUN Mode. (Displayed only for models with comparative outputs.)
Reset prohibition:
Resetting using the front panel keys
is prohibited. (Resetting by external
signals is not prohibited.)
Menus protected in Setting Mode:
Setting operations in Setting Mode
are prohibited in the way shown below.
Use the Up Key to
change the setting.
Use the Mode Key
to enable the setting and move to the
next parameter.
Setting menu Setting
012
Set value menu ×
Prescaling menu ×
Setup menu ××
Option menu ×
prot
all
sUset
secr
reset
prot
prot
all
all
sUset
sUset
secr
secr
reset
reset
Setting:
Next parameter:
Press the ESC Key
to return to the menu.
Press the Mode Key
to display the parameter.
Setting:
Next parameter:
Setting:
Next parameter:
Setting:
Next parameter:
kpon
kpon
kpoff
kpoff
Key protection ON:
Key protection OFF:
kpon kpoff
kpon kpoff
➤
➤
00 /1/
2
➤
➤
➤
0 1 2
0 1 2
Page 25
Period Meter K3NP B-217
Timers
■ Troubleshooting
When an error occurs, error details will be displayed in the PV display. Take the appropriate countermeasures according to the error displayed.
Error display Error contents Output status Countermeasure
Comparative
output
BCD output Communications
output
Linear
output
m1.err (M1.ERR)
m2.err (M2.ERR)
Memory error OFF OFF (all outputs
in "H" status)
OFF OFF Reset the power. If the same error
occurs, repair is necessary.
m3.err (M3.ERR) OFF OFF (all outputs
in "H" status)
OFF OFF Reset the power while holding
down the ESC Key, the Up Key, and
the RESET/TEACH Key. The settings will be returned to their default
values. If the same error occurs, repair is necessary.
err-o (ERR-O)
chg-o (CHG-O)
Output error OFF OFF (all outputs
in "H" status)
OFF OFF
(minimum
value)
Reset the power. If the same error
occurs, repair is necessary. If normal operation is restored, it is possible that the original error was
caused by the influence of noise.
Check that there are no sources of
noise in the vicinity.
(Display value
flashes.)
The input range and
display range were
exceeded.
Continues Continues
The OVER signal
turns ON.
Continues
The OVER or UN-
DER signal turns
ON.
Continues Take steps to ensure that the input
values and display values are within the allowable ranges.
rmt (RMT)
(Flashes for 3 s.)
The remote/local
section is set to remote.
Continues Continues Continues Continues If an attempt to change a setting
using key operations is made with
the remote/local selection set to remote, this error will flash for 3 s. To
enable settings to be changed, set
the remote/local selection to local.
Page 26
B-218 Period Meter K3NP
In the interest of product improvement, specifications are subject to change without notice.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. N088-E1-02
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