Omron K3NP - 1998, K3NP Operation Manual

K3NP Period Meter

Operation Manual

Produced January 1998

Notice:

OMRON products are manufactured for use according to proper procedures by a qualified operator and only for the purposes described in this manual.

The following conventions are used to indicate and classify precautions in this manual. Always heed the information provided with them. Failure to heed precautions can result in injury to people or damage to the product.

DANGER Indicates information that, if not heeded, is likely to result in loss of life or serious injury.

WARNING Indicates information that, if not heeded, could possibly result in loss of life or serious injury.

Caution Indicates information that, if not heeded, could result in relatively serious or minor injury,dam-

age to the product, or faulty operation.

OMRON Product References

All OMRON products are capitalized in this manual. The word “Unit” is also capitalized when it refers to an OMRON product, regardless of whether or not it appears in the proper name of the product.

The abbreviation “Ch,” which appears in some displays and on some OMRON products, often means “word” and is abbreviated “Wd” in documentation in this sense.

The abbreviation “PC” means Programmable Controller and is not used as an abbreviation for anything else.

Visual Aids

The following headings appear in the left column of the manual to help you locate different types of information.

Ó OMRON, 1998

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, or by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission of OMRON.

No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is constantly striving to improve its high-quality products, the information contained in this manual is subject to change without notice. Every precaution has been taken in the preparation of this manual. Nevertheless, OMRON assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained in this publication.

Note Indicates information of particular interest for efficient and convenient operation

of the product.

1, 2, 3... 1. Indicates lists of one sort or another, such as procedures, checklists, etc.

TABLE OF CONTENTS

PRECAUTIONS xi.................................

1 General Precautions xii..........................................................

2 Safety Precautions xii...........................................................

3 Application Precautions xii......................................................

4 Noise Prevention xiii............................................................

SECTION 1

Introduction 1....................................

1-1 Features 2...............................................................

1-2 Front of the Meter 3.......................................................

1-3 Rear of the Meter 6........................................................

1-4 Modes 7.................................................................

1-5 Communications Function 8.................................................

SECTION 2

Setup 9..........................................

2-1 Mounting 10..............................................................

2-2 Input Block 11.............................................................

2-3 Output Board 14...........................................................

SECTION 3

Operating Modes 19................................

3-1 Passing Speed: F1 20........................................................

3-2 Cycle: F2 23..............................................................

3-3 Time Difference: F3 25......................................................

3-4 Elapsed Time: F4 28........................................................

3-5 Length Measurement: F5 31..................................................

3-6 Interval: F6 34.............................................................

SECTION 4

Parameter Setting 37...............................

4-1 Overview 38..............................................................

4-2 Setting Mode 39...........................................................

4-3 Protect Mode 69...........................................................

SECTION 5

Operations in RUN Mode 79.........................

5-1 Displaying and Changing Setting Values 80......................................

5-2 Displaying and Resetting of Maximum and Minimum Values 82.....................

5-3 External Input Signals 84....................................................

SECTION 6

Useful Functions 87.................................

6-1 Teaching Function 88.......................................................

6-2 Output Test 90.............................................................

6-3 Maintenanc e Mode 91.......................................................

SECTION 7

BCD Output 93....................................

7-1 Connectors 94.............................................................

7-2 Timing Charts 97...........................................................

SECTION 8

Troubleshooting 99.................................

8-1 Items to Be Checked First 100.................................................

8-2 Display 100................................................................

vii

TABLE OF CONTENTS

Appendices

A Specifications 101..............................................................

B List of Settings 105.............................................................

C Available Models 107...........................................................

D Available Parameters 109........................................................

E Setting Examples 113...........................................................

Index 115..........................................

Revision History 119.................................

viii

About this Manual:

This manual describes the installation and operation of the K3NP Period Meter and includes the sections described below.

Please read this manual carefully and be sure you understand the information provided before attempting to install and operate the K3NP.

Section 1 describes the functions of the K3NP. The main components are also described.

Section 2 provides instructions required for mounting and wiring the K3NP.

Section 3 provides instructions for setting the parameters of the K3NP.

Section 4 provides instructions for operating the K3NP in RUN mode.

Section 5 provides information on the teaching function, output test, and maintenance mode.

Section 6 provides information on the use of the K3NP with the BCD Output Board.

Section 7 provides information for troubleshooting the K3NP

The Appendices provide specifications, a list of settings, a list of standard models, and a list of available menu items.

WARNING Failure to read and understand the information provided in this manual may result in

personal injury or death, damage to the product, or product failure. Please read each section in its entirety and be sure you understand the information provided in the section and related sections before attempting any of the procedures or operations given.

PRECAUTIONS

This section provides precautions for using the K3NP Period Meter and related devices.

The information contained in this section is important for the safe and reliable application of the K3NP .You must read this section and understand the i nformation contained before attempting to set up or operate the K3NP.

1 General Precautions xii..........................................................

2 Safety Precautions xii...........................................................

3 Application Precautions xii......................................................

4 Noise Prevention xiii............................................................

1 General Precautions

The user must operate the product according to the performance specifications described in the operation manuals.

Before using the product under conditions which are not described in the manual or applying the product to nuclear control systems, railroad systems, aviation systems, vehicles, combustion systems, medical equipment, amusement machines, safety equipment, and other systems, machines, and equipment that may have a serious influence on lives and property if used improperly, consult your OMRON representative.

Be sure to read this manual before attempting to use the product and keep this manual close at hand for reference during operation.

2 Safety Precautions

WARNING Never attempt to disassemble any Units while power is being supplied. Doing so

may result in serious electrical shock or electrocution.

WARNING Never touch any of the terminals while power is being supplied. Doing so may

result in serious electrical shock or electrocution.

3SectionApplication Precautions

3 Application Precautions

Observe the following precautions when using the product.

· Always use the power supply voltage specified in the specifications.

· Do not use the product in locations subject to flammable gases or combustible

objects.

· Be sure to confirm terminal names when wiring.

· Be sure to tighten the screws on the terminal blocks.

Observe the following precautions when mounting the product.

· Mount the product on level surfaces.

· Mount the product on a panel which has a thickness of 1 to 3.2 mm.

Do not mount the product in the following places.

· Locations subject to strong shock or vibration.

· Locations subject to temperature or humidity exceeding the rated levels or

where icing is liable to occur.

· Locations subject to dust.

· Locations subject to corrosive gases (particularly sulfuric gases or ammonium

gases).

· Locations subject to direct sunlight or outdoor conditions.

· Locations near devices (high-frequency welders or high-frequency sewing

machines) that produce high-frequency noise.

xii

4 Noise Prevention

Provide the following countermeasures when using the product in an environment where the product is exposed to noise.

· Countermeasures for protecting the product against high-frequency noise or abnormal voltages.

4SectionNoise Prevention

Line filter

Period Meter

Signal input

+++

Period Meter

Power input

· Countermeasures for protecting the product against inductive noise produced from the input line.

Period Meter

2-conductor shield wire

xiii

SECTION 1

Introduction

This section describes the functions ofthe K3NP. The main components arealso described. Referto the remaining sections of this manual for the operation of the K3NP and its menus in detail.

1-1 Features 2...............................................................

1-2 Front of the Meter 3.......................................................

1-3 Rear of the Meter 6........................................................

1-4 Modes 7.................................................................

1-5 Communications Function 8.................................................

Features Section 1-1

1-1 Features

The K3NP Period Meter displays pulse input after performing the numeric conversion of the input.

The K3NP has the following functions.

Measurement The internal system clock counts the period between pulses or pulse-ON time

and displays it in a variety of modes.

In the following example, the internal system clock counts the time (T) between pulse INA and pulse INB. If there are 100,000 counts during the time (T), a passing speed (F1) of 1,200 (m/min) will be displayed according to the following calculation.

T = 1 system clock count (0.5 ms) x 100,000 = 0.05 s F1 = 1/T x 60 (m/min) according to the internal calculation method. Therefore, 1/0.05 s x 60 = 1,200 (m/min)

Example: Passing Speed F1

Internal system clock

Prescaling Input pulses are converted into a value within a specified range.

Comparative Output Selection

Linear Output

BCD Output A digital data output format where every four binary bits is numerically equivalent

Communications Output

HOLD

RESET

Output Test This function is convenient for checking a system to which the K3NP is con-

Comparison output patterns can be selected from the standard, level, or zone output depending on the application.

Refer to Comparative Output Patterns, page 61.

Refer to Linear Output Range, page 64.

to one decimal digit.

Refer to Section 7 BCD Output.

Refer to the Communications Manual.

HOLD is an external input which is used to stop the A/D process and freeze the display. The comparative, linear, and BCD outputs are also retained.

Refer to 5-3 External Input Signals for details.

RESET is an external input to reset to the initial state and the present maximum and minimum values. Resetting can be performed using the front panel keys.

Refer to pages 85 and 86.

nected, especially when some inputs cannot be operated. The K3NP simulates an input to check the output conditions.

Refer to 6-2 Test Mode for details.

Remote/Local Selection The K3NP can be operated remotely through a host computer or locally with key

inputs.

Remote Mode: For programming remotely by downloading setup parameters

Local Mode: Programming is performed with the front panel key input.

Refer to Remote/Local Programming, page 67.

from a host computer via RS-232C, RS-485, or RS-422.

Front of the Meter

1-2 Front of the Meter

Section 1-2

SV display status indicators

Escape Key

Comparative output status indicators

Mode Key

Up Key

PV display

Status indicators

Teaching indicator

Unit of measure

SV display

RESET/TEACH Key

Shift Key

Five-digit (0 to 99999), seven-segment, 14.2-mm-high LED display with a programmable decimal point.

The displays show the process value, maximum value, minimum value, operations/parameters when setting, and error messages.

PV Display K3NP-jjjA Basic Model

RUN Mode: Displays the process, maximum, and minimum values. Also

displays setting values while the SV indicator is lit. When changing a value, all digits other than those that can be set become dimmer.

Setting Mode: Displays the menu, parameter, or setting value. When chang-

ing a value, all digits other than those that can be set become dimmer.

K3NP-jjjC Set Value LED Display Model

RUN Mode: Displays the process, maximum, and minimum values.

Setting Mode: Displays the menu and parameters.

SV Display (Setting value LED Display Models Only)

RUN Mode: Displays comparative set values setting values. When chang-

ing a value, all digits other than those that can be set become dimmer.

Setting Mode: Displays setting values. When changing a value, all digits other

than those that can be set become dimmer.

Comparative Output Status

Indicates the status of the comparative output.

Indicators

Front of the Meter

Section 1-2

Status Indicators HOLD Indicator

Lit when the HOLD input signal is ON.

MAX Indicator

Lit when the value displayed on the PV display is the maximum value.

MIN Indicator

Lit when the value displayed on the PV display is the minimum value.

PROG Indicator

Lit when the setting mode menu is displayed. The indicator flashes while parameters are displayed.

Teaching Indicator Lit when displayed parameters can be set in teaching operation. The indicator

flashes when the process value is indicated as a setting value.

SV Display Status Indicators Indicates which set value is on the PV or SV display.

Unit of Measure Attach the appropriate label showing the unit of measure (enclosed).

Escape Key

Mode Key

Process value Maximum value Minimum value

Used to select the process, maximum, or minimum value to be displayed on the PV display in RUN mode.

Process value Maximum value Minimum value

ESC ESC

Used to return from the setting, protect, or maintenance mode to the RUN mode.

This key is also used to return to the previous operation during the setting, protect, or maintenance mode.

Displays a setting value (out of HH, H, L, and LL setting values in this order) on the PV display in RUN mode when this key is pressed. Unless another operation key is pressed within five seconds after this key has been pressed, the display automatically changes to the one for process values.

HH is lit.

HH setting value

No key input for 5 seconds.

H is lit. L is lit. LL is lit.

H setting value

No key input for 5 seconds.

L setting value

No key input for 5 seconds.

LL setting value

No key input for 5 seconds.

In the RUN mode, this button terminates the measurement process and allows you to enter the setting mode, advancing through the menus and parameters.

In the setting mode, this button will store changes in the non-volatile memory while at the same time advancing the display to the next menu item.

Menu 1 Menu 2

Parameter 1 Parameter 2 Parameter n

Menu n

Front of the Meter

Section 1-2

Up Key

Shift Key

Used to select a parameter to be displayed for setting value change.

Used to increment the current digit in the setting value by one.

The value increases in the following order: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

Used to change the parameter displayed in setting mode.

Used to scroll the digit to the right of the presently displayed digit.

RESET/TEACH Key

Used to reset the K3NP to its initial state or to reset the max./min. value in RUN mode.

Used to select the teaching function. Refer to 6-1 Teaching Function for details.

Rear of the Meter

1-3 Rear of the Meter

Terminal arrangement varies depending on the selected Output Board.

For wiring, refer to Section 2 Setup.

K3NP with Relay Output Board, K31-C1, -C2, -C5 K3NP with Transistor Output Board, K31-T1, -T2 K3NP with Linear Output Board, K31-L1, -L2, -L3, -L4, -L5, -L6, -L7, -L8, -L9, -L10 K3NP with RS-485 Output Board, K31-FLK2, -FLK5

Section 1-3

Output Board

Input Board

K3NP with BCD Output Board, K31-B2, -B4

K3NP with RS-232C Output Board, K31-FLK1

Output Board

Input Board

Communications Output Board

Input Board

Modes

K3NP with RS-422 Output Board, K31-FLK3

Communications Output Board

Terminator

K3NP with RS232C + Transistor Output Board, K31-FLK4 K3NP with RS-422 + Transistor Output Board, K31-FLK6

Communications Output Board

Terminator

Section 1-4

Input Board

Transistor Output Board

1-4 Modes

Input Board

The following four modes are available.

· RUN mode for normal operations (see Section 5 Operations in RUN Mode)

· Setting mode for initializing parameter input (see Section4 ParameterSetting)

· Protect mode for lock-out configuration (see 4-1 Protect Mode)

· Maintenance mode for initialization (see 6-3-2 Initialization)

Refer to the following for the relationship among these modes and selection of the modes.

Press the Mode and Shift Keys while turning on the K3NP.

Maintenance mode

1 second

Power on

RUN mode

Press the Escape and up Keys for 1 second.

Protect mode

RUN Mode K3NP is in RUN when the K3NP is turned ON.

The K3NP in this mode provides an output signal as a result of the comparison of the measured and setting values.

Setting mode

Communications Function

The basic model in this mode usually displays the process value. The maximum and minimum values are displayed by pressing the Escape Key. The parameters and setting values are displayed by pressing the Mode Key.

Refer to Section 5 Operations in RUN Mode for RUN mode in detail.

Setting Mode Values are set in the K3NP in this mode by key input or using the teaching func-

tion.

Refer to Section 4 Parameter Setting for value setting by key input and 6-1 Teaching Function for the teaching function in detail.

Protect Mode Use this mode to prohibit some operations in order to lock out the setting values.

Refer to 4-1 Protect Mode for details.

Maintenance Mode The setting values are reset to factory-set values in this mode. Refer to 6-3-2

Initialization for details.

Section 1-5

1-5 Communications Function

The communications function of the K3NP makes it possible for the host computer to perform the following operations.

· Confirmation and change of setting values. Communications conditions cannot be changed.

· Reading and resetting the maximum and minimum values.

· Forced-zero setting and resetting.

· Confirmation of model data.

Use a model with a Communications Board if the communications function is required. Refer to the Communications Manual for the communications function in detail.

RS-232C Use the K31-FLK1 or K31-FLK4 Output Board to use the RS-232C interface.

RS-422 Use the K31-FLK3 or K31-FLK6 Output Board to use the RS-422 interface.

RS-485 Use the K31-FLK2 or K31-FLK5 Output Board to use the RS-485 interface.

This section provides instructions required for mount ing and wiring the K3NP.

2-1 Mounting 10..............................................................

2-2 Input Block 11.............................................................

2-2-1 Terminal Arrangement 11.............................................

2-2-2 Wiring Precautions 11................................................

2-2-3 Wiring 12..........................................................

2-3 Output Board 14...........................................................

2-3-1 Terminal Arrangement 14.............................................

2-3-2 Relay Output Board 16...............................................

2-3-3 Transistor and Combination Output Board 17.............................

2-3-4 Linear Output Board 17..............................................

2-3-5 BCD Output Board 17................................................

SECTION 2

Setup

Mounting Section 2-1

2-1 Mounting

Dimensions All dimensions are in millimeters.

Panel Cutouts

PV LED Indicator Size

14.2 mm

8.2 mm

+0.8

-- 0

+0.8

-- 0

75 min.

Recommended panel thickness is 1 to 3.2 mm.

Do not mount more than one Unit closely in the horizontal or vertical direction. Be sure to keep the distance between adjacent Units.

120 min.

Input Block

Mounting Method

Section 2-2

Panel

1, 2, 3... 1. Insert the K3NP into the mounting hole on the panel.

2. Hook the fixture claws onto the side holes.

3. Mount a fixing metal to the right and left sides as shown above and while keeping them in balance, alternately tighten each screw until the ratchet becomes idle.

2-2 Input Block

2-2-1 Terminal Arrangement

Sensor power supply (80mAmax.at12VDC)

100 to 240 to VAC

12 to 24 VDC

Note Voltage pulse input is available for the K3NP-NBjj-jj.

2-2-2 Wiring Precautions

· Do not make any mistake in polarity when supply DC power to the K3NP.

· Do not wire power lines alongside the signal lines of the K3NP in order to pre-

Open collector input

Voltage pulse input

vent the K3NP from noise interference.

Input Block

· Wire the terminal block with crimp terminals.

· Tighten each screw to a torque of 0.78 N S m(8kgfS cm).

2-2-3 Wiring

Power Supply Apply 100 to 240 VAC or 12 to 24 VDC to terminals 8 and 9.

Open Collector Input Connect the pulse output from sensor A to terminal 1.

Connect the pulse output from sensor B to terminal 2.

Terminals 10 and 11 are exclusively used for a power supply with an output of 80 mA at 12 VDC to sensors A or B. If power is supplied to the sensors A or B from a different power source, do not use terminal 10. Do not connect a sensor with open collector output to terminal 10.

Refer to the following for sensor connections.

Section 2-2

Sensor (with NPN output)

+12 V

Sensor (with PNP output)

· Residual voltage with sensor turned on: 3 V max.

· Current leakage with sensor turned off: 1.5 mA max.

· Switching load current: 20 mA or greater. Must be able to dependable switch

a load current of 5 mA max.

Photoelectric sensors, proximity sensors, rotary encoders, and relays can be connected as sensors to the K3NP.

Voltage Pulse Input Connect the pulse output of sensor A to terminal 3.

Connect the pulse output of sensor B to terminal 4.

Refer to the following for sensor connections.

+12 V

H level (sensor output ON): 4.5 to 30 VDC L level (sensor output OFF): -- 30 to 2 VDC

Auxiliary Power Supply Terminals 10 and 11 are exclusively used for power supply to sensors with an

output of 80 mA at 12 VDC ± 10%.

Sensor

+12 V

Input Block

External Signal Input HOLD Input

RESET Input BANK Input

Connect external signal inputs to terminals 5 through 7 and 13 through 15. Terminals 7 and 13 are connected to each other internally.

Connect HOLD input to terminal 5.

Connect RESET input to terminal 6.

Connect BANK inputs to terminals 14 and 15 for BANK1 and BANK2.

If open collector input is used as external signal input, the transistor must satisfy the following conditions.

· Residual voltage with transistor turned on: 3 V max.

· Current leakage with transistor turned off: 1.5 mA max.

· Switching load current: 20 mA or greater.

Approximately 5 V is imposed between COM and terminals 5 to 7 with a current flow of approximately 18 mA (a nominal value) at the time of external input shortcircuiting.

Section 2-2

Short-circuited together internally.

Output Board

2-3 Output Board

2-3-1 Terminal Arrangement

Section 2-3

K3NP with BCD Output Board, K31-B2, -B4

K3NP with RS232C + Transistor Output Board, K31-FLK4

Output Board

K3NP with RS-422 + Transistor Output Board, K31-FLK6

K3NP with RS-232C Output Board, K31-FLK1

Section 2-3

K3NP with RS-422 Output Board, K31-FLK3

Output Board

K3NP with RS-422 Output Board, K31-FLK3

2-3-2 Relay Output Board

The following figures show the connections for relay output.

Section 2-3

K3NP with 3 Relay Output Boards, K31-C1

H comparative output

PASS output

L comparative output

K3NP with 5 Relay Output Boards, K31-C5

K3NP with 5 Relay Output Boards, K31-C2

HH comparative output

H comparative output

PASS output

L comparative output

LL comparative output

HH comparative output

H comparative output

PASS output

L comparative output

LL comparative output

The following contact output conditions are required.

5 A (resistive load) at 250 VAC

1.5 A (inductive load) at 250 VAC 5 A (resistive load) at 30 VDC

1.5 A (inductive load) at 30 VDC

Output Board

2-3-3 Transistor and Combination Output Board

Section 2-3

K3NP with Transistor Output Board, K31-T1 or K31-T2

K3NP with Linear Output Board, K31-L4, -L5, -L6, -L9, -L10

K3NP with RS-485 + 5 Relay Output Boards, K31-FLK5

HH comparative

output

H comparative

output

PASS output

L comparative

output

LL comparative

output

COM

The following transistor output conditions are required.

Maximum rated voltage: 24 VDC Load current: 50 mA Current leakage with transistor turned off: 100 mA.

K3NP with BCD Output Board, K31-B2 or K31-B4

HH comparative

output

H comparative

output

PASS output

L comparative

output

LL comparative

output

COM

K3NP with RS232C + 5 Transistor Output Boards, K31-FLK4

K3NP with RS-422 + 5 Transistor Output Boards, K31-FLK6

HH comparative

output

H comparative

output

PASS output

L comparative

output

LL comparative

output

COM

2-3-4 Linear Output Board

The following figures show connections for linear output.

4to20mA 1to5V

The following linear output conditions are required.

Linear output Permissible load

4to20mA 600 W max. 4096 ±0.5% FS

1to5V 500 W min. 4096 ±0.5% FS

1 mV/10 digit 1kW min. 4096 ±1.5% FS

2-3-5 BCD Output Board

Refer to Section 7 BCD Output for the terminal arrangement and interface.

K3NP with Linear Output Board, K31-L1 or K31-L4

K3NP with Linear Output Board, K31-L2 or K31-L5

resistance

K3NP with Linear Output Board, K31-L3 or K31-L6

1 mV/10 digit

Resolution Output error

Operating Modes

This section provides information on the ba sic operation of the K3NP in operating mode.

SECTION 3

3-1 Passing Speed: 3-2 Cycle: 3-3 Time Difference: 3-4 Elapsed Time: 3-5 Length Measurement: 3-6 Interval:

f2 23..............................................................

f1 20........................................................

f3 25......................................................

f4 28........................................................

f6 34.............................................................

f5 31..................................................

Passing Speed:

3-1 Passing Speed: f1

FUNCTION

Application example

Section 3-1

Measures the time taken by an object to travel the distance between A and B.

Basic Operation

Displays the speed of an object passing between A and B. The speed is obtained by multiplying the reciprocal of T by 60. T (time) is the time interval between INA turning ON and INB turning ON. If the distance between the INA sensor and INB sensor is 1 m, the displayed value is m/min. If the distance is other than 1 m, or if another unit of measurement is required, input an appropriate prescale value. Obtain display value D as follows:

D (m/min) = 1/T x 60 x a

T: Time interval between INA turning ON and INB turning ON (sec) a: Prescale value

Hold Measured Value

When the HOLD input turns ON while the K3NP is measuring, the measuring operation is canceled and the K3NP holds the last measured value (displayed value). While the HOLD input is ON, the K3NP holds comparative output and BCD output. Measurement will not begin while the K3NP is in HOLD status. This is illustrated in the following diagram.

When the comparative output terminals of the output board and the HOLD input terminals are connected, the value measured immediately after the occurrence of an error can be obtained.

Display

Value previously

measured

TR: Recovery time

Passing Speed:

SETTING

REFERENCE

Section 3-1

Refer to the following table to set the most suitable prescaling value.

Mode Unit of display Prescale value

Passing speed mm/sec 1000L/60

m/sec L/60

m/min L

cm/sec 100L/60

cm/min 100L

km/h 0.06L

Where, L = Distance between sensors (m)

Refer to 4-2 Setting Mode.

Performance Characteristics

Accuracy of measurement

Measurement range 10 ms to 3200 s

Response time of HOLD input 20 ms max.

Recovery time (TR) 20 ms min.

ON/OFF pulse width

Response time Output configuration

Relay output Transistor

Comparative output 25 ms max. 20 ms max. 35 ms max. 35 ms max. 20 ms max .

BCD output --- --- Refer to page 93. --- ---

Linear output --- --- --- 40 ms max. ---

Response Time of HOLD Input

±0.08% rdg ± 1 digit (ambient temperature: 23°C ± 5°C)

Sensor with transistor output: 9 msmin. Sensor with relay output: 15 ms min.

output

BCD and

transistor output

Linear and

transistor output

Communication

and transistor

output

The response time of the HOLD input is the time required for the K3NP to accept HOLD input after the HOLD input turns ON.

Recovery Time (T

) Recovery time is the period required for the K3NP to become ready for the

next measuring operation after a measuring operation is completed. For Transistor Output Models, comparative output remains ON during recovery time. For other models, comparative output requires more time to turn ON. When the comparative output terminals of the output board and the HOLD input terminals are connected, set a sufficient recovery period, considering the response time of the HOLD input. This is illustrated in the following diagram.

+ 91 hidden pages

Omron K3NP - 1998, K3NP Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual