Omron K3NP Manual

Period meter k3np series
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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.
Base Units
K3NP -
1
2
3
4
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)
Note: These output types are available on Basic Models only.
Output Boards
K31 -
5
6
7
8
L2:
L3:
L4:
L5:
L6:
L7:
L8:
L9:
L10: Linear output, 0 to 10 VDC + 5 transistor outputs (NPN open
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)
Base Units with Output Boards
K3NP -
1
2
3
4
Linear output (1 to 5 VDC) (see note)
Linear output (1 mV/10 digits) (see note)
Linear output, 4 to 20 mA + 5 transistor outputs (NPN open
collector)
Linear output, 1 to 5 V + 5 transistor outputs (NPN open col-
lector)
Linear output, 1 mV/10 digits+ 5 transistor outputs (NPN
open collector)
Linear output, 0 to 5 VDC (see note)
Linear output, 0 to 10 VDC (see note)
Linear output, 0 to 5 VDC + 5 transistor outputs (NPN open
collector)
collector)
Period Meter
®
-
5
6
7
8
K3NP
B-193

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Summary of Contents for Omron K3NP

  • Page 1: Model Number Structure

    • 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. Base Units Output Boards Base Units with Output Boards...
  • Page 2: Ordering Information

    Combination output and BCD output + 5 transistor outputs (NPN open collector) K31-B4 communication boards 4 to 20 mA + 5 transistor outputs (NPN open collector) K31-L4 1 to 5 V + 5 transistor outputs (NPN open collector) K31-L5 1 mV/10 digits + 5 transistor outputs (NPN open collector)
  • Page 3: Specifications

    Approx. 400 g 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”...
  • Page 4 No-voltage contact (30 Hz max., ON/OFF pulse width: 15 ms min.) Voltage pulse (50 kHz max., ON/OFF pulse width: 9 s min., ON voltage: 4.5 to 30 V/OFF voltage: 30 to 2 V) Open collector (50 kHz max., ON/OFF pulse width: 9 s min.) Connectable Sensors ON residual voltage: 3 V max.
  • Page 5: Transistor Output

    0.5% FS 1.5% FS Permissible load resistance max. min. 1 K min. Note: For the 1 mV/10-digit output, the output voltage changes for every 40 to 50 increment in the display value. ■ Communications Specifications Item RS-232C, RS-422 RS-485 Transmission method...
  • Page 6: Input Unit

    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...
  • Page 7: Output Units

    6 7 8 9 10 11 12 13 14 15 16 17 18 19 (Terminals 21 to 26 are provided only on K31-L4, -L5, -L6, -L9, -L10.) 1 2 4 8 1 2 4 8 1 2 4 8 1 2 4 8 1 2 L1, L4: 4 to 20 mA COMMON...
  • Page 8: Block Diagram

    ■ Block Diagram switch Power supply for sensor Frequency Sensor A Input circuit measurement 8-bit Sensor B circuit Output microcomputer circuit Waveform Control input Control input adjustment circuit circuit Voltage stabilizing Control power Power supply for circuit supply sensor (input circuit)
  • Page 9: Operation

    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.
  • Page 10: 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.
  • Page 11 Example of Connection to Programmable Controller K3NP PC (SYSMAC) DC Input Unit 1. COMMON 2. 1 3. 2 4. 4 5. 8 23. DATA VALID 24. RUN 25. COMMON Transistor Output Boards 26. REQUEST +5 V 30. RESET 31. POLARITY...
  • Page 12 Example of Connection to Display Unit K3NP 1.COMMON 23.DATA VALID 24.RUN 25.COMMON Connected 26.REQUEST 30.RESET 31.POLARITY (Polarity: +, ) M7E-01D@N2 or M7E-01H@N2 M7E Digital Display Unit K3NP B-204 Period Meter...
  • Page 13: Operating Modes

    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.
  • Page 14: Application Example

    Hold input Display Units: s; min; h, min, s; min, s, 1/10 s; etc. Operating Mode 3: Time Difference The time between input A turning ON and input B turning ON is dis- Application Example played. Measuring the Time Required...
  • Page 15 Operating Mode 5: Length Measurement Application Example The number of pulses received on input A while input B is ON is dis- played. Measuring Workpiece Length 1 2 3 4 5 6 1 2 3 4 5 Input A To PC...
  • Page 16 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. K3NP...
  • Page 17: Engineering Data

    Engineering Data Derating Curve for Sensor Power Supply Note: The derating curve shown is for standard installation. The derating curve depends on the mounting direction. Ambient temperature ( C) Dimensions Note: All units are in millimeters unless otherwise indicated. PV Display 14.2...
  • Page 18: Operating Environment

    Period Meters sive gases. Doing so may result in explosion. may rise, leading to a reduction in the lifetime. In this case, take mea- sures to cool the Period Meters, such as installing fans. Ensure, how-...
  • Page 19: Noise Countermeasures

    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.
  • Page 20: Operating Procedures

    When the measurement value, the maximum value, or the minimum value is displayed, press the Mode Key repeatedly to display the com- parative 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.) Measurement value...
  • Page 21 ■ 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.
  • Page 22: Initial Settings

    Refer to Operation in RUN Mode. Select the setup menu ( ) with the Mode Key and set the operating mode, the input type, the time unit, and other settings. Setting Mode If required, set a prescale value in the prescaling menu...
  • Page 23 No key operation for 5 s 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 Remote/local programming prescale value (i.e., to display measurements in more than No key operation for 5 s one unit).
  • Page 24 /1/2 Set value menu next parameter. Prescaling menu Setup menu Option menu Note: If there is no key operation for 5 seconds, the setting is automatically registered. K3NP B-216 Period Meter...
  • Page 25: Troubleshooting

    ■ 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 BCD output Communications Linear output output output m1.err (M1.ERR)
  • Page 26 ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. In the interest of product improvement, specifications are subject to change without notice. Cat. No. N088-E1-02 K3NP B-218...

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