Page 1
Highly Visible LCD Display with 2-color
(Red and Green) LEDs
■ Contact, NPN, PNP, or voltage pulse input.
■ Front-panel key operation for easy setting.
■ Average processing function suppresses flicker.
■ Includes scaling, auto -zero time, star tup com pen-
sation time functions.
■ 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-F Frequency/Rate Meter
CUS
Ordering Information
Input type Supply voltage Output Model
Rotary pulse 100 to 240 VAC None K3MA-F 100-240VAC
2 relay contact outputs (SPST-NO) K3MA-F-A2 100-240VAC
24 VAC/VDC None K3MA-F 24VAC/VDC
2 relay contact outputs (SPST-NO) K3MA-F-A2 24VAC/VDC
Model Number Legend:
K3MA-F-@
1 2 3
1. Input T y pe
F: Rotary pulse
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
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Specifications
■ Ratings
Model K3MA-F 100-240VDC, K3MA-F-A2 100-240VAC K3MA-F 24VA C/VDC, K3MA-F-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:
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-FK3MA-F
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
■
Measuring Ranges
C)
10 mA at 5 VDC
100,000 times min. (at a rated load switching frequency of 10 times/min)
No-voltage Contact/Open Collector Inputs
Input Measuring range Measuring accuracy Displayable range
No-voltage contact (30 Hz max.) with
ON/OFF pulse width of 15 ms min.
Open collector (5 kHz max.) with ON/
OFF pulse width of 90
m
s min.
0.05 to 30.00 Hz
0.05 to 5000.0 Hz
0.1% FS 1 digit max.
(at 23
5
C)
–19999 to 99999
(with scaling function)
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■ Characteristics
K3MA-FK3MA-F
Input signal No-voltage contact (30 Hz max., ON/OFF pulse width: 15 ms min.)
Measuring accuracy
Measurement method Cycle measurement
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 Scaling teach function
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)
Voltage pulse (5 kHz max., ON/OFF pulse width: 90
0 to 2 V)
Open collector (5 kHz max., ON/OFF pulse width 90
Connectable Sensors
ON residual voltage: 2.5 V max.
OFF leakage current: 0.1 mA max.
Load current: Must have switching capacity of 15 mA min.
0.1%FS 1 digit (at 235C)
-
19999 to 99999)
-
” is displayed automatically with a negative input signal.
position can be set as desired.
Display color change (green (red), green, red (green), red)
OUT type change (upper limit, lower limit, upper/lower limit)
Average processing (simple average OFF/2/4/8 operations)
Auto-zero time
Startup compensation time
Setting change lockout
Parameter initialization
Display auto-return time
Rear case: IEC standard IP20
Terminals: IEC standard IP00 + finger protection (VDE0106/100)
Must be able to dependably switch a load current of 5 mA max.
m
s min., ON voltage: 4.5 to 30 V/OFF voltage:
m
s min.)
-
19999 to 99999). The decimal point
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K3MA-FK3MA-F
Nomenclature
2. Operation indicators
1
Max
Min
2
3. Level indicator
4. MAX/MIN key
Name Functions
1. Main indicator Displays current values , parameters, and set values.
2. Operation indicators
3. Level indicator Displays the current level that the K3MA-F 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 dis-
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.
T Lit when the teaching function is operable. Blinks while the teaching function is operating.
played.
SV
T
MAX/MIN LEVEL SHIFTMODE UP
5. Level key
6. Mode key
7. Shift key
1. Main indicator
8. Up key
Level indicator Level
/
Not lit Operation
2
%
Protect
Initial setting
Advanced-function setting
Operation
■ Main Functions
Input Types and Ranges
Frequency range
(setting parameter)
Pulse frequency selection
(
/%1$
)
Pulse Frequency Selection
Parameter Setting value Meaning
/%1$
*
Note: The initial value is “0.05 to 5 kHz (*).”
Selects pulse input signal. 0.05 to 30 Hz (
0.05 to 30 Hz measurement range
0.05 to 5 kHz measurement range
Function Input range (setting
0.05 to 5 kHz (
parameters)
*
Setting range
) Displayable from -19999 to
99999 with scaling function.
)
The position of the decimal point
can be set as desired.
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K3MA-FK3MA-F
Scaling
When the desired display value is set for a corresponding input, the value will be displayed on a line between two points determining the
zero point.
Parameter Setting value Meaning Parameter Setting value Meaning
(-/
#2/
to
to
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
INPUT
Input value
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-F.
Convenient Functions
Scaling Teach
(-/
The parameter (
the parameter, the actual input settings can be made with the following operation.
) for the K3MA-F’s initial setting level can be set using actual input values with the teaching function. After displaying
“T” lights to
indicate that the
parameter is valid
for teaching.
Monitor mode
Use to
register and shift to
monitor mode.
T e aching mode
“T” flashes.
Normal change
“T” turns OFF.
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.
Use to shift to
the next parameter
without registering.
Next parameter
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.
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K3MA-FK3MA-F
Upper Limit (High Acting)
Lower Limit (Low Acting)
Upper and Lower Limits
(Outside Band Acting)
OUT1 value
Measurement value
Output
ON
OFF
Hysteresis
Measurement value
OUT1 value
Output
Hysteresis
ON
OFF
OUT1 upper-limit
value
Measurement value
OUT1 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
Parameter Initialization
This function returns all of the parameters to their initial values.
Parameter Setting value Meaning
(-(3 .%%
.-
Use this to reset the K3MA-F after returning it to its factory-set
condition.
Average Processing
Threshold Output
OUT2 upper-limit
value
OUT1 upper-limit
value
OUT1 lower-limit
value
OUT2 lower-limit
value
ON
OUT2
OFF
ON
OUT1
OFF
--Initializes all param-
eters.
Combination of Upper Limit and
Upper/Lower Limits
OUT2 upper-limit
Measurement
value
value
OUT1 value
OUT2 lower-limit
value
ON
OUT2
OFF
ON
OUT1
OFF
Measurement
value
Auto-zero Time
This function sets the time for the display to return to zero when
input pulses stop. Set the time longer than the expected input
pulse cycle (the interval between one input pulse and the next).
Proper measurement is not possible if the time is set shorter than
the input pulse cycle.
Startup Compensation Time
The startup compensation time cancels measu rement for a predetermined time when turning power ON, to prevent unwanted
output due to temporary input fluctuations.
Display
Average processing stabilizes the display by minimizing any pulsating or flicker caused by fluctuations in the pulse width of sensor input or by eccentricity in rotating shafts.
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)
Set value
Measurement value
Hysteresis
Lower limit
setting
(OUT2)
Power supply
OUT2
output
Startup
compensation time
00000 displayed
Time
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
OUT2 value
Green
100.05
ON
Output
OFF
8.781
Red
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K3MA-FK3MA-F
Display Auto-return Time
This function automatically returns the display to the op eration
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.
■
External Connections
Terminal Arrangement
Power
supply
Output
terminals
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
100- to 240-VAC type or
24-VAC /VDC type
(No polarity for 24-VDC
connection.)
Terminal No. Name Description
-
A2
A1
-
E4
E1
B5
E5
E6
,
-
E3
E2
,
B6
-
Sensor power supply
12V
+
−
Models with
comparative
output
B5
B6
A1
A2
40 mA
OUT1
Input
terminals
E1
E2
OUT2
E3
E4
E5
E6
Note: Refer to Input Circuits on page 8.
Operation power Connects the operation power supply.
Pulse input No-voltage contact/open collector input
Outputs Outputs the relay outputs.
Sensor power supply Use as the power supply for sensors.
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Page 8
■ Input Circuits
Pulse Input
NPN, contact input
NPN
K3MA-FK3MA-F
12 V
200 Ω
1 kΩ
E4
Pulse
detection
circuit
■ Block Diagram
PNP, voltage pulse input
Input
PNP
Voltage pulse
Input circuit
EEPROM
E5
E6
B5
+
−
B6
Microcomputer
5 V 12 V
Constant voltage circuit
Power supply circuit
12 V
Voltage
detection
circuit
10 kΩ
The negative pole of the sensor power
supply and COM are connected
internally.
Key
Display
Output
circuit
X
Contact output
(See note.)
Note: Relay output models only.
8
Page 9
K3MA-FK3MA-F
■ 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, and setting OUT 1/2 set values. Continue
Initial setting Making initial settings of input type, scaling, output operating ac-
tion, and other parameters.
Advanced-function setting Setting average processing, display color settings, and other ad-
vanced-function parameters.
Power ON
Stopped
Stopped
+
Time set
by user
(See note.)
Protect level
+
1 s min.
Indicates change of level.
Note: The move-to-protect-level time can be set in the advanced-function setting level.
Operation level
1 s min.
1 s min.
Initial setting level
1 s min.
Advanced-function
setting level
-1234.5
Continue to press the key for 2 s min.
Password "−0169"
Flashing stops if key
is released.
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■ Parameters
Note: 1. Some parameters are not displayed for certain models.
K3MA-FK3MA-F
2. The K3MA-F 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
Current value
MODE
OUT1
value
MODE
OUT1
upper-limit
value
MODE
OUT1
lower-limit
value
MODE
OUT2
value
MODE
OUT2
upper-limit
value
MODE
OUT2
lower-limit
value
MODE
∼
∼
∼
∼
∼
∼
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Press Level
Key for
more than 3 s.
Press Level
Key for
less than 1 s.
Models
with the
comparative output
function
Initial setting level
MODE
MODE
MODE
MODE
MODE
MODE
MODE
Pulse
frequency
Scaling
input
value
Scaling
display
value
Decimal
point
position
OUT1 type
OUT2 type
Move to
advancedfunction
setting level
Press Level Key for less than 1 s.
Pulse frequency
Enter
password
"−0169"
/
Scaling
∼
Models
with the
comparative
output
function
Upper Limit
Lower Limit
Upper/Lower
Limits
Upper Limit
Lower Limit
Upper/Lower
Limits
∼
∼
∼
K3MA-FK3MA-F
Advanced-function
setting level
Parameter
initialization
MODE
Average
processing
MODE
OUT1
hysteresis
MODE
OUT2
hysteresis
MODE
Auto-zero
time
MODE
Startup
compensation
time
MODE
Display
color
change
MODE
Display
auto-return
time
MODE
Move-toprotectlevel time
MODE
Settings displayed in reversed colors are initial settings.
/
/
//
Unit: times
Comparative hysteresis
∼∼
∼∼
/
∼
Green (red)
Green
Red (green)
Red
∼∼
∼∼
Unit: s
Unit: s
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Press Level Key + Mode Key for more than 1 s.
K3MA-FK3MA-F
Operation level
Press Level Key + Mode Key for more
than preset time.
Protect level
MODE
MODE
MODE
Operation/adjustment
lockouts
Setting level lockouts
Setting change lockout
Operation/Adjustment Lockouts
Restricts key operations for operation level and adjustment level.
Parameter Setting Operation level
Current value
display
. /3
Allowed Allowed
Allowed Allowed
Allowed Prohibited
• Initial setting is 0.
• This is not displayed on models with no comparative output function.
Set value
display
//
//
/
Initial Settings
■
Power ON
Press the Level Key for 3 s min. to move to the initial setting
level.
Select the pulse frequ ency for measurement.
Set the scaling value s an d OUT type as requ i r ed .
Setting Level Lockouts
Restricts shifting to initial setting level or advanced-function setting level.
Parameter Setting Shift to initial
setting level
Shift to
advanced-
function
setting level
("/3
Allowed Allowed
Allowed Prohibited
Prohibited Prohibited
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
53/3 .%%
.-
Allowed
Prohibited
However, all protect level parameters can still be changed.
operation
If required, shift to the advanced-function setting level to set
the number of measurements for average processing,
hysteresis values, auto-zero time, startup compensation time,
display color change, displ ay auto- r et u rn time, or move-toprotect-level time.
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.
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K3MA-FK3MA-F
■ Setting Example
Initial Settings
The settings for the following example are shown here.
Example: Display conveyor belt feed speed
E2E-X5E1
0.1 m
Here, the conveyor belt feed speed is to be displayed in units of
0.1 m/min.
• Proximity Sensor: E2E-X5E1, NPN output
1 pulse/rotation, roller diameter 0.1 m
Display value
dps
18850
Proximity Sensor
1
Max
Min
2
SV
MAX/MIN LEVEL SHIFTMODE UP
K3MA-F-A2 100-240VAC
Input value
1. Select the maximum input frequency for the K3MA-F.
Set the pulse frequency selection to either 30 Hz or 5 kHz.
In the example, this is set to 30 Hz because the conveyor
belt is turning at a slow speed.
Parameter:
/%1$
(pulse frequency), Setting value:
2. Set the scaling. The relationship between the display value
and the input value is shown in the following equation.
Rotations (rpm) = Frequency input/No. of pulses
per rotation
Cycle speed D (m/min)= Rotations
=1/N
60
roll circumference
f 60 d
p
N: No. of pulses per rotation
f: Frequency (Hz)
d: Roller diameter (m)
When the input conditions are applied to this equation, we
obtain the following:
Display value = 1/1
f 60 0.1
p
For an input of 1 Hz, the display value is 18.8495 (m/min).
The scaling settings for the K3MA-F must be integers.
Also,
to decrease error, the scaling value is multiplied by 1,000,
to obtain an input of 1000 Hz and a display value of 18850.
However, because the display value in this case is displayed to the first decimal place, the scaling is set as
shown in the following exam ple so that 18850 is displayed
for an input of 100 Hz.
Parameter Setting value
(-/
(scaling input value)
(scaling display value)
#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.
inp
100
■
Application Examples
Displaying conveyor belt feed
speed
K3MA-F
Gear
Proximity sensor
• Monitoring line speed for a reflow furnace
• Displaying feed speed for food processing, conveying, sintering
m/min
Monitoring the rotations of a
mixer or churner
rpm
K3MA-F
Mixer or churner
• Mixers for resin molding
• Powdering/pelleting machines, centrifugal separators
Displaying the monitor output
from an inverter as rotations or
line speed
rpm
Inverter
K3MA-F
Motor
Note: If the monitor output from the inverter is analog,
such as 0 to 10 V, use the K3MA-J.
• Monitoring conveyor speed
• Machining equipment (grinders, polishers)
Voltage pulse
13
Page 14
Dimensions
K3MA-FK3MA-F
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-F into the panel cut-out hole.
2. For a waterproof installation, insert the rubber gasket onto
the body of the K3MA-F.
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-F .
■
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.
14
5.8 mm max.
Page 15
■ Unit Markings (Provided)
• The unit markings are not attached to the K3MA-F . Select the desired markings from the provided sheet.
Precautions
!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 modif y the product.
8. Do not use the product where flammable or combustible
gases are present.
¼m. Loose screws may
K3MA-FK3MA-F
Note: For scales and gauges, use the unit mark ings that are
specified by the relevant laws or regulations.
• 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
• Mount the product to a panel that is 1 to 8 mm thick.
• Install the product in a horizontal position.
• Use crimp terminals that match screw sizes.
Noise Prevention
• Install the product as far as possible from devices that generat e
strong, high-frequency fields (such as high-frequency welders or
sewing machines) or surges.
• Install 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
Frequency
/Rate
Meter
+
Frequency
Signal
/Rate
input
Meter
−
Surge absorber
Power
supply
input
Application
General Precautions
1. Do not use the product in the following loc ations :
15
Page 16
K3MA-FK3MA-F
• 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.
• When using a noise filter for the power supply, check for the voltage and current and install it as close as possible to the Frequency/Rate 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
Main indicator Error contents Countermeasures
$
RAM memory error Repair is necessary.
EEPROM memory error When this error is displayed, press the Level Key for 3
The scaling display value exceeds 99999. Promptly change the input to a value that falls within the
The scaling display value is lower than -19999. Promptly change the input to a value that falls within the
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 Frequency/Rate Meter.
• Use and store the product within the temperature and humidity
ranges given in the specifications. When gang-mounting Frequency/Rate Meters or arranging them vertically, heat generated
by the Frequency/Rate Meters will cause the internal temperature to rise, reducing the service life. In such cases, consider
forced cooling methods, such as using a fan to circulate air
around the Frequency/Rate Meters. Do not, however, allow only
the terminals to be cooled. Doing so will increase measurement
error.
• The 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.
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. N107-E1-01
In the interest of product improvement, specifications are subject to change 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)
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