Omron K3MA-J Series Manuel utilisateur

CSM_K3MA-J_DS_E_11_1

Process Meter

K3MA-J

Highly Visible LCD Display with 2-color

(Red and Green) LEDs

• Multi-range DC voltage/current input.

• Front-panel key operation for easy setting.

• Average processing function suppresses flicker.

• Scaling, front-panel forced-zero, zero-limit functions.

• Easy confirmation of max/min display.

• Short 80-mm depth (measured from edge of face plate).

• Finger protective cover (standard equipment) guards against electric

shock.

• Water- and dust-proof NEMA4X (IP66 equivalent) front panel.

• Recognized to U.S. and Canadian requirements under the Compo-

nent Recognition Program of UL.

•CEmarking.

Model Number Structure

■Model Number Legend

1. Input Type

J: DC voltage/current

2. Comparative Output Model

None: No output

A2: 2 relay contact outputs (SPST-NO)

3. Supply Voltage

100-240VAC: 100 to 240 VAC

24VAC/VDC: 24 VAC/VDC

Ordering Information

■List of Models

*Changing the display color based on comparison with a reference value is not possible.

Refer to Safety Precautions for All Digital Panel

Meters.

For the most recent information on models that have been certified for

safety standards, refer to your OMRON website.

K3MA-J-@

1 2 3

Input type Supply voltage Comparative Output Model Model

DC voltage/current 100 to 240 VAC None *K3MA-J 100-240VAC

2 relay contact outputs (SPST-NO) K3MA-J-A2 100-240VAC

24 VAC/VDC None *K3MA-J 24VAC/VDC

2 relay contact outputs (SPST-NO) K3MA-J-A2 24VAC/VDC

K3MA-J

■Accessories (Order Separately)

Note: Rubber packing is provided with the Controller.

Specifications

■Ratings

Name Shape Model

Splash-proof Soft Cover K32-49SC

Hard Cover K32-49HC

Watertight Cover Y92A-49N

Rubber Packing K32-P1

Model K3MA-J 100-240VAC, K3MA-J-A2 100-240VAC K3MA-J 24VAC/VDC, K3MA-J-A2 24VAC/VDC

Supply voltage 100 to 240 VAC 24 VAC/VDC

Operating voltage range 85% to 110% of the rated supply voltage

Power consumption

(under maximum load)

6 VA max. 4.5 VA max. (24 VAC)

4.5 W max. (24 VDC)

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 com-

mon mode.

±1 μs, or 100 ns for square-wave noise with 1 ns.

±480 V on power supply terminals in normal mode.

±1,500 V in common mode.

±1 μs, or 100 ns for square-wave noise with 1 ns.

Vibration resistance Vibration: 10 to 55 Hz, Acceleration: 50 m/s2

5 min each in X, Y, and Z directions for 10 sweeps.

Shock resistance 150 m/s2(100 m/s2for relay contact outputs) 3 times each on 3 axes, 6 directions.

Ambient temperature Operating: −10°C to 55°C (with no condensation or icing)

Storage: −25°C to 65°C (with no condensation or icing)

Ambient humidity Operating: 25% to 85% (with no condensation)

Approved safety standards UL61010-1, CSA C22.2 No.61010-1-04, conforms to EN61010-1 (Pollution degree 2/overvoltage category II)

Conforms to VDE0106/P100 (finger protection)

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

8 kV air discharge

Immunity RF-interference: EN61000-4-3: 10 V/m (amplitude-modulated, 80 MHz to 1 GHz)

Electrical Fast Transient Noise: EN61000-4-4: 2 kV (power line)

Immunity Burst Noise: 1 kV line to line (I/O signal line)

Immunity Surge: EN61000-4-5: 1 kV (power line)

2 kV line to ground (power line)

Immunity Conducted Disturbance: EN61000-4-6: 3 V (0.15 to 80 MHz)

Immunity Voltage Dip/Interrupting: EN61000-4-11: 0.5 cycle, 0, 180°, 100% (rated voltage)

Weight Approx. 200 g

K3MA-J

■Characteristics

■Measuring Ranges

Process Voltage/Current Inputs

■Input/Output Ratings

Relay Contact Output

Input signal DC voltage/current (0 to 20 mA, 4 to 20 mA, 0 to 5 V, 1 to 5 V, ±5 V, ±10 V)

A/D conversion Double integral method

Sampling period 250 ms

Display refresh period Sampling period (sampling times multiplied by number of measurements for averaging if average pro-

cessing is selected.)

Max. displayed digits 5 digits (−19999 to 99999)

Display 7-segment digital display, Character height: 14.2 mm

Polarity display “−” is displayed automatically with a negative input signal.

Zero display Leading zeros are not displayed.

Scaling function Programmable with front-panel key inputs (range of display: −19999 to 99999). The decimal point po-

sition can be set as desired.

Hold function Max. hold (maximum value), Min. hold (minimum value)

Hysteresis setting Programmable with front-panel key inputs (0001 to 9999).

Other functions Forced-zero (with front-panel key)

Zero-limit

Scaling teach function

Display color change (green (red), green, red (green), red)

OUT type change (upper limit, lower limit, upper/lower limit)

Average processing (simple average)

Output Relays: 2 SPST-NO

Delay in comparative outputs 750 ms max.

Degree of protection Front panel: NEMA4X for indoor use (equivalent to IP66)

Rear case: IEC standard IP20

Terminals: IEC standard IP00 + finger protection (VDE0106/100)

Memory protection Non-volatile memory (EEPROM) (possible to rewrite 100,000 times)

Input Measuring range Measuring accuracy Input impedance Displayable range

DC voltage 1.000 to 5.000 V ±0.1% FS ±1 digit max.

(at 23±3°C)

1 MΩmin. –19999 to 99999

(with scaling function)

0.000 to 5.000 V

–5.000 to 5.000 V ±0.1% FS ±1 digit max.

(at 23±5°C)

–10.00 to 10.00 V

DC current 4.00 to 20.00 mA/

0.00 to 20.00 mA

±0.1% FS ±1 digit max.

(at 23±3°C)

45 Ω

Item Resistive load (cosφ= 1) Inductive load (cosφ= 0.4, L/R=7 ms)

Rated load (UL ratings) 5 A at 250 VAC, 5 A at 30 VDC 1.5 A at 250 VAC, 1.5 A at 30 VDC

Max. contact voltage 250 VAC, 150 VDC

Max. switching capacity 1,250 VA, 150 W 250 VA, 30 W

Min. permissible load

(P level, reference value)

10 mA at 5 VDC

Mechanical life 5,000,000 times min. (at a switching frequency of 1,200 times/min)

Electrical life

(at an ambient temperature of 20°C)

100,000 times min. (at a rated load switching frequency of 10 times/min)

K3MA-J

Connections

■Terminal Arrangement

■Block Diagram

■Input Circuits

Analog Input (DC Voltage/Current)

Power

supply Output

terminals

Input

terminals

100- to 240-VAC

type or 24-VAC/

VDC type

(No polarity for

24-VDC

connection.)

Models with

comparative

output

Voltage input

For voltage input For current input

OUT1

OUT2

COM

Current input

Terminal No. Name Description

Operation power Connects the operation power supply.

Analog input Connects the voltage or current analog input.

Outputs Outputs the relay outputs.

A1 A2

E4 E6

,E5

E1 E2

,E3

5 V12 V

Input Input circuit

Micro-

computer

Key

Display

Output

circuit Contact output

(See note.)

Constant voltage circuit

Power supply circuit

EEPROM

Note: Relay output models only.

−

＋

−

＋

Voltage inputCurrent input

COM

To A/D

A+B=1 MΩ

COM

To A/D

45 Ω

K3MA-J

Operation

■Main Functions

Input Types and Ranges

Note: The initial value for the input range is “4 to 20 mA (4-20).”

Scaling

•Analog (Process) Inputs

The K3MA-J converts input signals into desired physical values.

INPUT2: Any input value

DISPLAY2: Displayed value corresponding to INPUT2

INPUT1: Any input value

DISPLAY1: Displayed value corresponding to INPUT1

When DISPLAY1 is set for INPUT1, and DISPLAY2 is set for INPUT2, a line will be displayed joining the two points. (Raise shift, reverse scaling,

plus/minus display, etc., can be adjusted as desired.)

Input type (setting parameter) Function Input range

(setting parameters)

Setting range

Input range (in-t) Selects DC voltage/current signal

input

0 to 20 mA (0-20) Displayable from −19999 to 99999

with scaling function.

The position of the decimal point

can be set as desired.

4 to 20 mA (4-20)

0 to 5 V (0-5)

1 to 5 V (1-5)

±5 V (5)

±10 V (10)

Parameter Setting value Meaning Parameter Setting value Meaning

inp.1 -19999 to 99999 Input value for dsp.1 dp %.%%%% Display four digits after decimal point

dsp.1 -19999 to 99999 Input value for inp.1 %%.%%% Display three digits after decimal point

inp.2 -19999 to 99999 Input value for dsp.2 %%%.%% Display two digits after decimal point

dsp.2 -19999 to 99999 Input value for inp.2 %%%%.% Display one digit after decimal point

%%%%% No decimal point

()()

()

() Reverse scaling also possible.

Input value

Display value Display value

DISPLAY 2

DISPLAY 1

DISPLAY 2

INPUT 1 INPUT 2

Teaching with actual values is possible.

Instead of setting by inputting with the Up Key and Shift Key, current values can be

input as scaling input values for teaching. This is useful for making settings while checking the

operation status of the K3MA-J.

The decimal point can be optionally displayed.

When displaying the decimal point, consider the

number of digits to followthe decimal point prior to

setting the scaling display value.

Reverse scaling, where the display value decreases as

the input value increases, is also possible.

K3MA-J

Convenient Functions

Scaling Teach

The parameters (inp.1, inp.2) for the K3MA-J’s initial setting level can be set using actual input values with the teaching function. After displaying

the parameters, the actual input settings can be made with the following operation.

OUT Types (Comparative Output Models Only)

OUT 1 and OUT 2 can be set to operate in one of the three following modes in accordance with the compared values:

•Upper limit (High Acting):

The output is turned ON when the measurement value is greater than its set value.

•Lower limit (Low Acting):

The output is turned ON when the measurement value is less than its set value.

•Upper and lower limits (Outside Band Acting):

An upper limit (H set value) and lower limit (L set value) can be set independently.

The output is turned ON when the measurement value is greater than upper-limit set value or less than the lower-limit set value.

The three types of output operations shown above can be combined as desired. The following are examples of possible combinations.

“T” lights to

indicate that the

parameter is

valid for teaching.

Monitor mode

Teaching mode

“T” flashes.

Normal change

“T” turns OFF.

Use to register

and shift to monitor

mode.

Use to shift to

the next parameter

without registering.

Next parameter

Upper Limit (High Acting) Lower Limit (Low Acting)

OUT1/2 value

Measurement value

OFF

OutputON

OFF

OutputON

OFF

Output

OUT1/2 value

Measurement valueMeasurement value

Hysteresis

Upper and Lower Limits

(Outside Band Acting)

OUT1/2 upper-limit value

OUT1/2 lower-limit value

Upper Limit 2-stage Output Threshold Output Combination of Upper Limit and

Upper/Lower Limits

OUT2

value

OUT1

value

OUT2

OUT1

OFF

OUT2

OUT1

OFF

OUT2

OUT1

OFF

Measurement

value

Measurement

value

Measurement

value

OUT2 upper-limit

value

OUT1 upper-limit

value

OUT1 lower-limit

value

OUT2 lower-limit

value

OUT2 Upper-limit

value

OUT1 value

OUT2 Lower-limit

value

K3MA-J

Parameter Initialization

This function returns all of the parameters to their initial values.

Use this to reset the K3MA-J after returning it to its factory-set condi-

tion.

Average Processing

Average processing stabilizes displayed values to minimize flicker by

averaging the fluctuating input signals. Average processing can be

performed for the measurement values in either of four steps (OFF, 2

times, 4 times, or 8 times).

This is useful for ignoring rapid fluctuations, e.g., eliminating spike

noise.

Hysteresis (Comparative Output

Models Only)

The hysteresis of comparative outputs can be set to prevent chatter-

ing in the output when the measurement value fluctuates finely near

the OUT value.

Zero-limit Function

The zero-limit function changes any value below the set value to

zero. This is useful when you want to change negative values to zero

rather than display them, or when you want to make the display in the

smallest part of the input range zero.

Changing the Display Color

The color of the value displayed can be set to either red or green. For

comparative output models (K3MA-J-A2), the display color can be

set to change from green to red, or from red to green, according to

the status of the comparison criterion.

Display Auto-return Time

This function automatically returns the display to the operation level’s

current value if no keys are pressed for a preset time (called the dis-

play auto-return time).

Move-to-Protect-Level Time

The time required to shift to the protect level can be set as desired.

Forced-zero Function

It is possible to shift from a value to the zero point with one touch of

the Up Key on the front panel (for example, when adjusting reference

values).

Note: Used only for releasing the forced-zero with the Protect menu.

MAX/MIN Display

The maximum and minimum measurement (display) values from the

time the power is turned ON until the current time can be stored and

displayed. This is useful, for example, when measuring the maximum

value.

Parameter Setting value Meaning

init off ---

on Initializes all parame-

ters.

Parameter Setting value Meaning

=-lim off OFF: No zero-limit

on ON: Zero-limit

lim-p 0 to 99 0 to 99: Zero-limit value

Upper limit (high acting)

Set value

Measurement value

Hysteresis

Output

OFF

Display

Zero-limit

setting value

Input

8.781

100.05

113.36

OUT1 value

OUT2 value

Green

Red

MAX/MIN LEVEL MODE SHIFT

Current value

MAX value

MINvalue

MAX/MIN

Max

Min

MAX/MIN LEVEL MODE SHIFT UP

K3MA-J

Nomenclature

Dimensions

Name Functions

1. Main indicator Displays current values, parameters, and set values.

2. Opera-

tion indica-

tors

1 Lit when output 1 is ON.

2 Lit when output 2 is ON.

SV Lit when a set value is being displayed or changed.

Max Lit when the main indicator is showing the MAX value.

Min Lit when the main indicator is showing the MIN value.

Z Lit during the forced-zero operation.

T Lit when the teaching function is operable. Blinks while the teaching function is operating.

3. Level indicator Displays the current level that the K3MA-J is in. (See below for details.)

4. MAX/MIN Key Used to display the MAX and MIN values when a measurement value is being displayed.

5. Level Key Used to change the level.

6. Mode Key Used to allow the main indicator to indicate parameters sequentially.

7. Shift Key Used to enable a set value to be changed. When changing a set value, this key is used to move along the digits.

8. Up Key Used to change a set value. Used to set or clear a forced-zero function when a measurement value is being displayed.

Level indicator Level

pProtect

Not lit Operation

sInitial setting

fAdvanced-function setting

MAX/MIN LEVEL MODE SHIFT UP

Max

Min

2. Operation indicators

3. Level indicator

4. MAX/MINkey

5. Level key 6. Mode key 7. Shift key

8. Up key

1. Main indicator

ABCDE

UPSHIFTMODELEVELMAX/MIN

101.2

1.3

44.8

+0.5

Finger protective

cover (provided)

Main indicator

character size

Panel cut-out

7.6 mm

14.2 mm

75 min.

120 min.

The K3MA-J uses M3 terminals.

Mounting Recommended Panel Thickness

1 to 8mm.

Mount the product horizontally.

K3MA-J

Application Examples

Installation

1. Insert the K3MA-J into the panel cut-out hole.

2. For a waterproof installation, insert the rubber gasket onto the

body of the K3MA-J.

3. Fit the adaptor into the grooves on the left and right sides of the

rear case, then push it until it contacts the panel to secure the

K3MA-J.

■Angle of View

The K3MA is designed to provide the best visibility at the angles

shown in the following diagram.

■Watertight Cover

Y92A-49N

■Rubber Packing

K32-P1

If the rubber packing is lost or damaged, it can

be ordered using the following model number:

K32-P1.

(Depending on the operating environment, dete-

rioration, contraction, or hardening of the rubber

packing may occur and so, in order to ensure

the level of waterproofing specified in NEMA4,

periodic replacement is recommended.)

Note: Rubber packing is provided with the

Controller.

■Wiring Precautions

•Use crimp terminals.

•Tighten the terminal screws to a torque of approximately 0.5 N⋅m.

•To avoid the influence of noise, route signal lines and power lines

separately.

■Wiring

•Use the following M3 crimp terminals.

■Unit Labels (Provided)

•The unit labels are not attached to the K3MA-J. Select the desired

labels from the provided sheet.

Note: For scales and gauges, use the unit labels that are specified by

the relevant laws or regulations.

Flowrate sensorDisplaying/outputting

liquid level

Monitoringinterior

tank pressure

E8AA Pressure Sensor

4 to 20 mA

K3MA-J

Tank Discharge valve

Pump

E4PA Ultra-

sonic Dis-

placement

Sensor

4 to 20 mA

or 0 to 10 V

K3MA-J

Pump

K3MA-J

4 to 20 mA

Flowrate Sensor

m/min

• Monitoring gas pressure

• Inspection instruments in food or phar-

maceutical plants

• Monitoring liquid level in cleaning tanks • Monitoring send-out flowrate

• Water processing devices, etc.• Water tanks, devices using chemicals,

etc.

10°

30°

5.8mm max.

K3MA-J

Operating Procedures

■Operations in Run Mode

■Levels

“Level” refers to a grouping of parameters. The following table lists the operations that are possible in each of the levels, and the diagram tells how

to move between levels. There are some parameters that are not displayed for certain models.

Level name Function Measurement

Protect Setting lockouts. Continue

Operation Displaying current values, setting/clearing forced-zero function, and

setting OUT 1/2 values.

Continue

Initial setting Making initial settings of input type, scaling, output operating action,

and other parameters.

Stopped

Advanced-function setting Setting average processing, display color settings, and other ad-

vanced-function parameters.

Stopped

Setting and Releasing a

Forced Zero

Setting a Forced Zero

Any reference point can be easily set to zero.

•Press the Up Key while the measurement is

being displayed. The displayed value will be

shifted to 0 and measurement will be

continued.

•The Z indicator will light when a forced zero

has been set.

•The shifted measurement value after a forced

zero has been set will be maintained even

after power is turned OFF.

Releasing a Forced Zero

•Press the Up Key for 1 s min. to release the

forced zero. The Z indicator will turn OFF.

If forced-zero protection is turned ON in the

protect level, the Up Key cannot be used to

set a forced zero. Forced-zero protection is

ON in the default settings.

Displayed value

Forced zero input

Z indicator OFF ON

Measured value

after setting

forced zero

Checking the Maximum and Minimum Values

The maximum and minimum values can be displayed by pressing the MAX/MIN Key while

the measurement is being displayed.

The maximum and minimum values can be reset by pressing the MIN/MAX Key for 1 s

min. when the maximum or minimum value is displayed.

Checking and Setting Comparative Set Values (for

Models with the Comparative Output Function)

Each time the Mode Key is pressed when the measurement value, maximum value, or

minimum value is displayed, the comparative values will be displayed in the following

order: OUT1 value (or OUT1 upper-limit value, OUT1 lower-limit 1), OUT 2 value (or OUT

2 upper-limit value, OUT2 lower-limit value 2).

Note: When a comparative value is displayed, it can be changed by pressing the Shift Key

and the Up Key (when key protection is OFF).

Measurement

value

MAX value MINvalue

MAX/MINKey MAX/MINKeyMAX/MINKey

Measurement

value

MAX value

MINvalue

OUT1

upper-limit

value

OUT1 value OUT2 value

OUT1

lower-limit

value

OUT2

upper-limit

value

OUT2

lower-limit

value

Mode Key Mode Key Mode Key Mode Key Mode Key

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