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 func-
tions.
■ Easy confirmation of max/min display.
■ Short 8 0-mm depth (me asured from e dge 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 Component Reco gnitio n Pr ogram of UL
with CE marking.
K3MA-J Process Meter
CUS
Ordering Information
Input type Supply voltage Output 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
Model Number Legend:
K3MA-J-@
1 2 3
1. Input T y pe
J: DC voltage/current
2. Output Type
None: No output
A2: 2 relay contact outputs (SPST -NO)
3. Supply Voltage
100-240VAC: 100 to 240 VAC
24VAC/VDC: 24 VAC/VDC
1
Specifications
■ Ratings
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)
Insulation resistance 20 M
Dielectric withstand voltage 2,000 VAC for 1 min between external terminal and case.
Noise immunity
Vibration resistance
Shock resistance
Ambient temperature Operating:
Ambient humidity Operating: 25% to 85% (with no condensation)
Approved safety standards UL3121, conforms to EN61010-1 (Pollution degree 2/overvoltage category II)
EMC (EMI) EN61326+A1 Industry
Weight Approx. 200 g
6 VA max. 4.5 VA max. (24 VAC)
W
min. (at 500 VDC) between external terminal and case.
Insulation provided between inputs, outputs, and power supply.
Insulation provided between inputs, outputs, and power supply.
1,500 V on power supply terminals in normal or
common mode.
1 m
s, or 100 ns for square-wave noise with 1 ns.
2
Vibration: 10 to 55 Hz, Acceleration: 50 m/s
5 min each in X, Y, and Z directions for 10 sweeps.
2
150 m/s
Storage:
Conforms to VDE0106/P100 (finger protection)
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
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)
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 m/s2 for relay contact outputs) 3 times each on 3 axes, 6 directions.
-10
C to 55C (with no condensation or icing)
-25
C to 65C (with no condensation or icing)
4.5 W max. (24 VDC)
480 V on power supply terminals in normal mode.
1,500 V in common mode.
1 m
s, or 100 ns for square-wave noise with 1 ns.
8-kV air discharge
2-kV line to ground (power line)
,
K3MA-JK3MA-J
100% (rated voltage)
Input/Output Ratings
Relay Contact Output
Item Resistive load (cosf = 1) Inductive load (cosf = 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 250 VAC, 150 VDC
Max. contact current 5 A (at COM terminal)
Max. switching capacity 1,250 VA, 150 W 250 VA, 30 W
Min. permissible load
(P level, reference value)
Mechanical life 5,000,000 times min. (at a switching frequency of 1,200 times/min)
Electrical life (at an ambient tempera-
ture of 20
C)
10 mA at 5 VDC
100,000 times min. (at a rated load switching frequency of 10 times/min)
2
K3MA-JK3MA-J
■ Measuring Ranges
Process Voltage/Current Inputs
Input Measuring range Measuring accuracy Input impedance Displayable range
DC voltage 1.000 to 5.000 V
0.000 to 5.000 V
–5.000 to 5.000 V
–10.00 to 10.00 V
DC current 4.00 to 20.00 mA/
■ Characteristics
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
Max. displayed digits 5 digits (
Display 7-segment digital display, Character height: 14.2 mm
Polarity display “
Zero displa y Leading zeros are not displayed.
Scaling function Programmable with front-panel key inputs (range of display:
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)
Output Relays: 2 SPST-NO
Delay in comparative outputs 750 ms max.
Enclosure ratings Front panel: NEMA 4X for indoor use (equivalent to IP66)
Memory protection Non-volatile memory (EEPROM) (possible to rewrite 100,000 times)
0.00 to 20.00 mA
processing is selected.)
-
” is displayed automatically with a negative input signal.
position can be set as desired.
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)
Rear case: IEC standard IP20
Terminals: IEC standard IP00 + finger protection (VDE0106/100)
0.1% FS 1 digit max.
(at 23
3
0.1% FS 1 digit max.
(at 23
5
0.1% FS 1 digit max.
(at 23
3
-
19999 to 99999)
C)
C)
C)
W
min. –19999 to 99999
1 M
45
W
-
19999 to 99999). The decimal point
(with scaling function)
3
K3MA-JK3MA-J
Nomenclature
2. Operation indicators
1
Max
Min
2
3. Level indicator
4. MAX/MIN key
SV
Z
T
MAX/MIN LEVEL SHIFTMODE UP
5. Level key
6. Mode key
7. Shift key
Name Functions
1. Main indicator Displays current values, parameters, and set values.
2. Operation indicators
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.
1. Main indicator
8. Up key
Level indicator Level
/
Protect
Not lit Operation
2
%
Initial setting
Advanced-function setting
4
Operation
■ Main Functions
Input Types and Ranges
K3MA-JK3MA-J
Input type (setting parameter) Function Input range
Setting range
(setting parameters)
Input range (
Note: The initial value for the input range is “4 to 20 mA (
(-3
) Selects DC voltage/current sig-
nal input
0 to 20 mA (
4 to 20 mA (
0 to 5 V (
1 to 5 V (
5 V ()
10 V ()
).”
) Displayable from -19999 to
99999 with scaling function.
)
The position of the decimal point
)
can be set as desired.
)
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.)
Parameter Setting value Meaning Parameter Setting value Meaning
(-/
#2/
(-/
#2/
to
to
to
to
Input value for
#2/
Display value for
Input value for
#2/
Display value for
#/
(-/
(-/
Display four digits after decimal point
Display three digits after decimal point
Display two digits after decimal point
Display one digit after decimal point
No decimal point
Display value
DISPLAY 2
()
DISPLAY 1
()
INPUT 2
INPUT 1
()()
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.
Display value
DISPLAY 1
()
DISPLAY 2
()
Input value
Reverse scaling also possible.
INPUT 1
()
INPUT 2
()
Input value
The decimal point can be optionally displayed.
When displaying the decimal point, consider the
number of digits to follow the decimal point prior to
setting the scaling display value.
Reverse scaling, whe re the d isplay v alue decreases as
the input value increases, is also possible.
5
Convenient Functions
Scaling Teach
The parameters (
(-/, (-/
) for the K3MA-J’s initial setting level can be set using actual input values with the teaching function. After dis-
playing the parameters, the actual input settings can be made with the following operation.
Teaching mode
Use to shift to
the next parameter
without registering.
“T” lights to
indicate that the
parameter is
valid for teachi ng.
Next parameter
Monitor mode
Use to register
and shift to monitor
mode.
Normal change
“T” flashes.
“T” turns OFF.
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 low er 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.
Upper Limit (High Acting)
Lower Limit (Low Acting)
Upper and Lower Limits
(Outside Band Acting)
K3MA-JK3MA-J
OUT1/2 value
Measurement value
Output
ON
OFF
Hysteresis
Measurement value
OUT1/2 value
Output
Hysteresis
ON
OFF
OUT1/2 upper-limit value
Measurement value
OUT1/2 lower-limit value
Output
Hysteresis
Hysteresis
ON
OFF
The three types of output operations shown above can be combined as desired. The following are examples of possible combinations.
Upper Limit 2-stage Output
OUT2
value
OUT1
value
OUT2
OUT1
ON
OFF
ON
OFF
Measurement
value
Threshold Output
OUT2 upper-limit
value
OUT1 upper-limit
value
OUT1 lower-limit
value
OUT2 lower-limit
value
ON
OUT2
OFF
ON
OUT1
OFF
Measurement
value
Combination of Upper Limit and
Upper/Lower Limits
OUT2 Upper-limit
value
OUT1 value
OUT2 Lower-limit
value
OUT2
OUT1
Measurement
value
ON
OFF
ON
OFF
6
K3MA-JK3MA-J
Parameter Initialization
This function returns all of the parameters to their initial values.
Parameter Setting value Meaning
(-(3 .%%
.-
--Initializes all param-
eters.
Use this to reset the K3MA-J after returning it to its factory-set
condition.
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 r apid f luctuations, e.g., eliminating spike
noise.
Hysteresis (Comparative Output Models Only)
The hysteresis of comparative outputs can be set to prevent chattering in the output when the measurement value fluctuates finely
near the OUT value.
Upper limit (high acting)
Changing the Display Color
The color of the value displayed can be set to either red or green.
For comparative output models, 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.
Red
113.36
OUT1 value
Green
100.05
OUT2 value
8.781
Red
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 display 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).
Set value
Hysteresis
Measurement value
ON
Output
OFF
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.
Parameter Setting value Meaning
+(, .%%
.-
+(,/
Zero-limit
setting value
to
Display
OFF: No zero-limit
ON: Zero-limit
0 to 99: Zero-limit value
Input
MAX/MIN LEVEL SHIFTMODE UP
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.
Current value
MAX/MIN LEVEL SHIFTMODE UP
Max
MAX/MIN
LEVEL SHIFTMODE UP
Min
MAX/MIN
LEVEL SHIFTMODE UP
MAX/MIN
MAX value
MAX/MIN
MIN value
MAX/MIN
7
■ External Connections
Output
terminals
Input
terminals
Power
supply
Terminal Arrangement
K3MA-JK3MA-J
Models with
A1
comparative
output
100- to 240-V AC type or
24-VAC/VDC type
(No polarity for 24- VDC
connection.)
A2
OUT1
Terminal No. Name Description
-
A2
A1
-
E4
E1
E5
E6
,
-
E3
E2
,
■ Input Circuits
Analog Input (DC Voltage/Current)
E1
E2
OUT2
E3
E4
Voltage input
E5
COM
E6
For voltage input
E4
COM
E5
Current input
E6
For current input
Operation power Connects the operation power supply.
Analog input Connects the voltage or current analog in-
put.
Outputs Outputs the relay outputs.
Voltage input
COM
A
4
5
B
A+B=1 MΩ
Current input
COM
6
60 Ω
5
To A/DTo A/D
8
■ Block Diagram
K3MA-JK3MA-J
Input
Input circuit
EEPROM
Microcomputer
5 V 12 V
Constant voltage circuit
Power supply circuit
Key
Display
Output
circuit
X
Contact output
(See note.)
Note: Relay output models only.
■
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,
Continue
and setting OUT 1/2 values.
Initial setting Making initial settings of input type, scaling, output operating ac-
Stopped
tion, and other parameters.
Advanced-function setting Setting average processing, display color settings, and other ad-
Stopped
vanced-function parameters.
+
Time set
by user
(See note.)
Protect level
1 s min.
Indicates change of level.
Power ON
Operation level
1 s min.
Flashing stops if key
is released.
1 s min.
+
-1234.5
Continue to press the key for 2 s min.
Initial setting level
Password "−0169"
1 s min.
Advanced-function
setting level
Note: The move-to-protect-level time can be set in the advanced-function setting level.
9
■ Parameters
Note: 1. Some parameters are not displayed for certain models.
K3MA-JK3MA-J
2. The K3MA-J will stop measurement if the level is changed to the initial setting level or
the advanced-function setting level.
3. If the input range is changed, some parameters are set to default values. Therefore,
set the input range first.
4. Settings displayed in reversed colors are initial settings.
For models with the
comparative output
function
Set one of these.
Set one of these.
Power ON
Operation level
MODE
MODE
MODE
Current value
OUT1 value
OUT1
upper-limit
value
MODE
OUT1
lower-limit
value
MODE
OUT2 value
MODE
OUT2
upper-limit
value
OUT2
lower-limit
value
MODE
∼
∼
∼
∼
∼
∼
10
Press Level
Key for
more than 3 s.
Press Level
Key for
more than 1 s.
Initial setting level
MODE
MODE
MODE
MODE
MODE
MODE
MODE
MODE
MODE
Input type
Scaling
input value 1
Scaling
display
value 1
Scaling
input value 2
Scaling
display
value 2
Decimal
point
position
OUT1
type
OUT2
type
Move to
advancedfunction
setting level
Press Level Key for more than 1 s.
Enter
password
"−0169"
Models with
the comparative
output
function
//
Upper Limit
Lower Limit
Upper/Lower
Limits
Upper Limit
Lower Limit
Upper/Lower
Limits
/
∼
∼
∼
∼
∼
∼∼
/
Advanced-function
setting level
MODE
MODE
MODE
MODE
MODE
MODE
MODE
MODE
MODE
Parameter
initialization
Average
processing
OUT1
hysteresis
OUT2
hysteresis
Zero-limit
Zero-limit
value
Display
color
change
Display
auto-return
time
Move-toprotectlevel time
Zero-limit
∼
Green (red)
Green
Red (green)
Red
∼
∼
K3MA-JK3MA-J
/
//
Unit: times
∼∼
∼∼
/
∼
∼
/
Unit: s
Unit: s
11
Press Level Key + Mode Key for more than 1 s.
Operation level
Press Level Key + Mode Key
for more than preset time.
Protect level
MODE
MODE
Operation/adjustment
lockouts
Setting level lockout
//
/
K3MA-JK3MA-J
/
Operation/Adjustment Lockouts
Restricts key operations for operation level and adjustment level.
Parameter Setting Operation level
Current value display Set value display
. /3
Allowed Allowed
Allowed Allowed
Allowed Prohibited
• I nitial setting is 0.
• This cannot be displayed on models not equipped with the comparative output function.
Setting Level Lockout
Restricts shifting to initial setting level or advanced-function setting level.
Parameter Setting Shift to initial
("/3
setting level
Allowed Allowed
Allowed Prohibited
Prohibited Prohibited
Shift to advanced-
function setting level
Setting change lockout
MODE
Forced-zero shift
lockout
MODE
Initial Settings
■
/
/
Power ON
Press the Level Key for 3 s min. to move to the initial setting
level.
Select the input type.
Set the scaling values and specify output operating action as
required.
If required, shift to the advanced-function setting level to set
the number of measurements for averaging, hysteresis
values, auto-zero limit value, display color change, display
auto-return time, or move-to-protect-level time.
Setting Change Lockout
Restricts setting changes by key operation. When this lockout is
set, it is no longer possible to shift to a setting change mode.
Parameter Setting Setting change by key operation
53/3 .%%
.-
Allowed
Prohibited
However, all protect level parameters can still be changed.
Forced-zero Lockout
Restricts the setting or release of a forced-zero by front-panel key
operation.
Parameter Setting Setting/release of forced-zero by
1/3 .%%
.-
Allowed
Prohibited
key operation
Press the Level Key for less than 1 s min. to return to the
operation level.
Specify set value of OUT 1 and 2.
Measurement starts.
12
■ Setting Example
K3MA-JK3MA-J
Initial Settings
The settings for the following example are shown here.
Example: Tank pressure display
0 to 980 kPa
4 to 20 mA
E8AA-M10
Pressure Sensor
Here, the pressure inside the tank is to be displayed in units of 0.1
kPa.
• Pressure Sensor: E8AA-M10
Measuring range: 0 to 980 kPa, output 4 to 20 mA
1
Max
Min
2
SV
MAX/MIN LEVEL SHIFTMODE UP
K3MA-J-A2 24VAC/VDC
Display value
DISPLAY 2
()
DISPLAY 1
()
INPUT 1
Input value
INPUT 2
()()
1. Set the K3MA-J input type to the 4 to 20 mA input range.
Parameter:
(-3
(input type), Setting value:
2. Set the display values for the corresponding input values.
Set the scaling as shown below for the following correspondence: input 4 mA-->display 0.0, input 20 mA-->display
980.0
Parameter Setting value
(-/
(scaling input value 1)
(scaling display value 1)
#2/
(-/
(scaling input value 2)
(scaling display value 2)
#2/
(decimal point position)
#/
Note: The decimal point position here refers to the position in the
number after scaling. When setting the scaling display value, it is necessary to consider the number of digits to be
displayed past the decimal point.
■
Application Examples
Monitoring interior tank
pressure
E8AA Pressure Sensor
Tank
4 to 20 mA
Pump
Discharge valve
• M onitoring gas pressure
• I nspection instruments in food or pharmaceutical plants
Pa
K3MA-J
Displaying/outputting liquid
level
4 to 20 mA
or 0 to 10 V
E4PA Ultrasonic Displacement
Sensor
K3MA-J
• M onitoring liquid level in cleaning tanks
• Water tanks, devices using chemicals,
etc.
mm
Flowrate sensor
K3MA-J
4 to 20 mA
Pump
• M onitoring sendout flowrate
• Water processing devices, etc.
Flowrate Sensor
m/min
13
Dimensions
K3MA-JK3MA-J
101.2
91
96
ABCDE
UPSHIFTMODELEVELMAX/MIN
Finger protective
cover (provided)
85
97
12
1.3
48
Main indicator
character size
14.2 mm
7.6 mm
75 min.
80
44.8
Optional Parts (Order Separately)
Name Shape Model
Splash-proof Soft Cover K32-49SC
Hard Cover K32-49HC
Panel cut-out
120 min.
+0.5
92
0
45
+0.5
0
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.
■
Wiring Precautions
• Use crimp terminals.
• Tighten the terminal screws to a torque of approximately 0.5
N
¼
m.
• To avoid the influence of noise, route signal lines and power lines
separately.
■
Wiring
• Use the following M3 crimp terminals.
5.8 mm max.
5.8 mm max.
14
■ Unit Markings (Provided)
• The unit markings are not attached to the K3MA-J. Select the desired markings from the provided sheet.
Precautions
K3MA-JK3MA-J
Note: For scales and gauges, use the unit mark ings that are
specified by the relevant laws or regulations.
!Caution
Do not touch the terminals while the power is being supplied.
Doing so may result in electric shock.
!Caution
Do not disassemble the product or touch the internal components of the product while the power is being supplied. Doing
so may result in electric shock.
!Caution
Do not allow pieces of metal or wire clippings to enter the product. Doing so may result in electric shock, fire, or malfunction.
!Caution
Perform correct settings for the product according to the control
application. Failure to do so may cause unexpected operation,
resulting in damage to the product or injury.
!Caution
Take safety measures, such as installing a separate monitoring
system, to ensure safety even if the product fails. Product failure may prevent comparative outputs from being generated,
resulting in serious accidents.
Observe the following precautions to ensure safety.
1. Maintain the power supply voltage within the range specified in the specifications.
2. Maintain the load within the ratings specified in the specifications.
3. Check each terminal for correct number and polarity before
connecting it. Incorrect or reverse connections may damage or burn out internal components in the product.
4. Tighten the terminal screws securely. The recommended
tightening torque is 0.43 to 0.58 N
cause fire or malfunction.
5. Do not connect anything to unused terminals.
6. Provide a switch or circuit breaker so that operators can
easily turn OFF the power supply when necessary. Also
provide appropriate indications of such devices.
7. Do not attempt to disassemble, repair, or modify the product.
8. Do not use the product where flammable or combustible
gases are present.
¼m. Loose screws may
Application
General Precautions
1. Do not use the product in the following locations:
• Locations subject to direct radiant heat from heating
equipment.
• Locations subject to exposure to water, oil, or chemicals.
• Locations subject to direct sunlight.
• Locations subject to dust or corrosive gases (particularly
sulfuric gas or ammonia gas).
• Locations subject to severe changes in temperature.
• Locations subject to icing or condensation.
• Locations subject to shock or vibration.
2. Do not block heat dissipation around the product, i.e., provide sufficient space for heat dissipation.
3. Ensure that the rated voltage is reached within two seconds
after the power is turned ON.
4. Conduct aging for 15 minutes min. after power is turned ON
for correct measurement.
5. Do not touch the slit sections or terminals while the power
is being supplied to prevent the product from being affected
by static electricity.
6. Do not lay heavy objects on the product during use or storage. Doing so may deform or deteriorate the product.
7. Do not use paint thinner for cleaning. Use commercially
available alcohol.
Mounting
• M ount the product to a panel that is 1 to 8 mm thick.
• I nstall the product in a horizontal position.
• Use crimp terminals that match screw sizes.
Noise Prevention
• I nsta ll the prod uct as fa r as poss ible from devic es t hat generat e
strong, high-frequency fields (such as high-frequency welders or
sewing machines) or surges.
• I nstall surge absorbers or noise filters on nearby devices that
generate noise (particularly, motors, transformers, solenoids,
magnet coils, and other devices that have a high inductance
component).
Line filter
Power
supply
input
Process
Meter
+
Process
Signal
input
Meter
−
Surge absorber
Power
supply
input
15
K3MA-JK3MA-J
• To prevent inductive noise, separate the terminal block wiring for
the product from high-voltage or high-current power lines. Do not
route the wiring for the product in parallel with or tie it in a bundle
with power lines.
Take the following countermeasures against inductive noise in
input lines.
Analog Signal Inputs
+
Signal
input
2-conductor shielded cable
• When using a noise filter for the power supply, check for the voltage and current and install it as close as possible to the Process
Meter.
• Do not install the product near radios, television sets, or wireless
devices. Doing so may cause reception interference.
■
Troubleshooting
When an error occurs, error details will be displayed on the main indicator. Confirm the error from the main indicator and take the appropriate countermeasures.
Level
display
Not lit
$
Not lit Flashes
Not lit Flashes
Not lit Flashes
Main indicator Error contents Countermeasures
$
2$11
RAM memory error Repair is necessary.
EEPROM memory error When this error is displayed, press the Level Key for 3
You will see this indication when turning ON
the product the first time after purchase. This is
because the input signal value is 0 mA at that
time even though the range is factory set to 4
to 20 mA.
Input error Promptly change the input voltage/current to a value
The scaling display value exceeds 99999. Promptly change the input to a value that falls wi thin the
The scaling display value is lower than -19999. Promptly change the input to a value that falls wi thin the
−
Process
Meter
Increasing Service Life
• Do not use the product in locations where the temperature or humidity exceeds the ratings or where condensation may occur.
When installing the product in a panel, be sure that the temperature around the product (not the temperature around the panel)
does not exceed the ratings. The product service life depends on
the ambient temperature. The higher the ambient temperature,
the shorter the service life. To extend the product service life,
lower the temperature inside the Process Meter.
• Use and store the product within the temperature and humidity
ranges given in the specifications. When gang-mounting Process Meters or arranging them vertically, heat generated by the
Process Meters will cause the internal temperature to rise, reducing the service life. In such cases, consider fo rced cooling
methods, such as using a fan to circulate air around the Process
Meters. Do not, however, allow only the terminals to be cooled.
Doing so will increase measurement error.
• T he life of the output relays is greatly affected by the switching
capacity and switching conditions. Use these relays within their
rated load and electrical life. The contacts may fuse or burn if
they are used past their electrical life.
Consult your OMRON sales representative.
seconds, and the settings will be restored to the factory
settings.
If the error cannot be recovered, repair is necessary.
Consult your OMRON sales representative.
At the initial setting level, set the input type and other
parameters according to your application.
that falls within the measurement range.
If the error cannot be recovered, repair is necessary.
Consult your OMRON sales representative.
specified range.
The scaling value may be inappropriate. Review the
scaling value at the initial setting level.
specified range.
The scaling value may be inappropriate. Review the
scaling value at the initial setting level.
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. N108-E1-01
In the interest of product improvement, specifications are sub jec t to c hange witho ut notic e.
OMRON Corporation
Industrial Automation Company
Measuring and Supervisory Controls Department
Shiokoji Horikawa, Shimogyo-ku
Kyoto, 600-8530 Japan
Tel: (81)75-344-7108/Fax: (81)75-344-7189
16
Printed in Japan
1001-1M (1001) (B)
Loading...