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Frequency/Rate Meter
K3MA-F
CSM_K3MA-F_DS_E_12_3
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, startup compensation time 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 Component Recognition Program of UL.
• CE marking.
• Built-in external power supply (12 VDC, 40 mA).
For the most recent information on models that have been certified for
safety standards, refer to your OMRON website.
Refer to Safety Precautions for All Digital Panel
Meters.
Model Number Structure
■ Model Number Legend
:
K3MA-F-@
1
2
3
1. Input Type
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
Ordering Information
■ List of Models
Input type
Rotary pulse
Supply voltage
100 to 240 VAC
24 VAC/VDC
Output
Model
None
K3MA-F 100-240VAC
2 relay contact outputs (SPST-NO)
K3MA-F-A2 100-240VAC
None
K3MA-F 24VAC/VDC
2 relay contact outputs (SPST-NO)
K3MA-F-A2 24VAC/VDC
1
K3MA-F
■ Accessories (Order Separately)
Name
Shape
Model
Splash-proof Soft Cover
K32-49SC
Hard Cover
K32-49HC
Watertight Cover
Y92A-49N
Rubber Packing
K32-P1
Specifications
■ Ratings
Model
K3MA-F 100-240VDC, K3MA-F-A2 100-240VAC
K3MA-F 24VAC/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)
6 VA max.
External power supply
12 VDC, 40 mA
Insulation resistance
20 MΩ min. (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- ±480 V on power supply terminals in normal mode.
mon mode.
±1,500 V in common mode.
±1 μs, or 100 ns for square-wave noise with 1 ns.
±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/s2 for 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)
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)
Emission Enclosure:
Emission AC Mains:
(EMS)
Immunity ESD:
Weight
Approx. 200 g
4.5 VA max. (24 VAC)
4.5 W max. (24 VDC)
EN61326-1
Industrial electromagnetic environment
CISPR 11 Group 1 class A: CISRP16-1/-2
CISPR 11 Group 1 class A: CISRP16-1/-2
EN61326-1
Industrial electromagnetic environment
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)
2
K3MA-F
■ Characteristics
Input signal
No-voltage contact (30 Hz max., ON/OFF pulse width: 15 ms min.)
Voltage pulse (5 kHz max., ON/OFF pulse width: 90 μs min., ON voltage: 4.5 to 30 V/OFF voltage:
0 to 2 V)
Open collector (5 kHz max., ON/OFF pulse width 90 μs min.)
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.
Must be able to dependably switch a load current of 5 mA max.
Measuring accuracy
±0.1%FS ±1 digit (at 23±5°C)
Measurement method
Cycle measurement
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 position 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
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 OFF/2/4/8 operations)
Auto-zero time
Startup compensation time
Setting change lockout
Parameter initialization
Display auto-return time
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)
■ Measuring Ranges
No-voltage Contact/Open Collector Inputs
Input
Measuring range
No-voltage contact (30 Hz max.) with
ON/OFF pulse width of 15 ms min.
0.05 to 30.00 Hz
Open collector (5 kHz max.) with
ON/OFF pulse width of 90 μs min.
0 to 5 kHz
Measuring accuracy
±0.1% FS ±1 digit max.
(at 23±5°C)
Displayable range
–19999 to 99999
(with scaling function)
■ Input/Output Ratings
Relay Contact Output
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 A at 250 VAC, 1 A at 30 VDC
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)
3
K3MA-F
Connections
■ Terminal Arrangement
Models with
comparative
output
A1
Power
supply
Output
terminals
A2
E1
E2
OUT1
100- to 240-VAC type or
24-VAC/VDC type
OUT2
E3
(No polarity for 24-VDC
connection.)
Input
terminals
E4
+
12 V
40 mA
External power supply
B5
E5
B6
E6
−
Note: Refer to Input Circuits on page 5.
Terminal No.
Name
Description
A1 - A2
Operation power
Connects the operation power supply.
E4 , E6 - E5
Pulse input
No-voltage contact/open collector input
E1 , E2 - E3
Outputs
Outputs the relay outputs.
B5 - B6
External power supply
Use as the power supply for sensors.
■ Block Diagram
Key
Input circuit
Input
Microcomputer
Display
EEP ROM
Output
circuit
5V
Contact output
(See note.)
X
12 V
Constant voltage circuit
Power supply circuit
Note: Relay output models only.
■ Input Circuits
Pulse Input
12 V
200 Ω
1 kΩ
Pulse
detection
circuit
E4
NPN, contact input
NPN
E5
PNP, voltage pulse input
12 V
Voltage
detection
circuit
E6
Voltage pulse
PNP
10 kΩ
+
B5
−
B6
The negative pole of the sensor power
supply and COM are connected
internally.
4
K3MA-F
Operation
■ Main Functions
Input Types and Ranges
Frequency range
(setting parameter)
Pulse frequency selection
(p-fre)
Function
Input range (setting parameters)
Selects pulse input signal.
0.05 to 30.00 Hz
(30)
0 to 5 kHz
(5k)
Setting range
Displayable from −19999 to 99999
with scaling function.
The position of the decimal point
can be set as desired.
Pulse Frequency Selection
Parameter
p-fre
Setting value
Meaning
30
0.05 to 30.00 Hz
measurement range
5k
0 to 5 kHz measurement range
Note: The default value is “0 to 5 kHz (5k).”
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
inp
0 to 99999
Input value for dsp
dsp
-19999 to 99999
Display value for inp
Parameter
dp
Setting value
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
Note:
Display value
Meaning
%.%%%%
The initial value will change depending on the
pulse frequency selection.
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.
DISPLAY
If p-fre is set to 30, the initial setting for the
decimal display will be 000.00.
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.
5
K3MA-F
Convenient Functions
Scaling Teach
The parameter (inp) for the K3MA-F’s initial setting level can be set using actual input values with the teaching function. After displaying the parameter, the actual input settings can be made with the following operation.
Teaching mode
Monitor mode
Use
to shift to
the next parameter
without registering.
“T” flashes.
Use
to
register and shift to
monitor mode.
Normal change
“T” lights to
indicate that the
parameter is valid
for teaching.
“T” turns OFF.
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.
Parameter
Set value
out1.t
or
out2.t
hi
Upper limit: Upper-limit alarm
operation
lo
Lower limit: Lower-limit alarm
operation
hi-lo
Upper Limit (High Acting)
OUT1 value
Lower Limit (Low Acting)
Measurement value
OUT1 value
ON
Output
OFF
Upper and lower limits: Upperand lower limit alarm operation
Upper and Lower Limits
(Outside Band Acting)
OUT1 upper-limit
value
Measurement value
Hysteresis
Measurement value
Meaning
Hysteresis
ON
Output
OFF
Hysteresis
OUT1 lower-limit
value
ON
Output
OFF
Hysteresis
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
Threshold Output
OUT2 upper-limit
value
OUT2
value
OUT1 upper-limit
value
Measurement
value
Combination of Upper Limit and
Upper/Lower Limits
Measurement
value
OUT1 lower-limit
value
OUT1
value
OUT2 lower-limit
value
OUT2 upper-limit
value
OUT1 value
Measurement
value
OUT2 lower-limit
value
OUT2 ON
OFF
OUT2 ON
OFF
OUT2 ON
OFF
OUT1 ON
OFF
OUT1 ON
OFF
OUT1 ON
OFF
Parameter Initialization
Use this to reset the K3MA-F after returning it to its factory-set condition.
This function returns all of the parameters to their initial values.
Parameter
init
Setting value
Meaning
off
---
on
Initializes all parameters.
6
K3MA-F
Average Processing
Changing the Display Color
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.
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
Hysteresis (Comparative Output
Models Only)
OUT2 value
8.781
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
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).
Hysteresis
Move-to-Protect-Level Time
Measurement value
The time required to shift to the protect level can be set as desired.
Output
MAX/MIN Display
ON
OFF
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.
Setting range: 0.0 to 19.9 s
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
MAX/MIN
Startup Compensation Time
LEVEL
MODE
SHIFT
UP
MAX value
Max
The startup compensation time is the time to wait for the
measurement operation to be entered after the power supply of the
K3MA-F is turned ON. Use this parameter to cancel measurement
and comparative output operation until the a rotating body reaches
its normal speed when the power supply to the K3MA-F and rotating
body are turned ON at the same time.
MAX/MIN
MAX/MIN
LEVEL
MODE
SHIFT
UP
MIN value
Min
MAX/MIN
Display
MAX/MIN
LEVEL
MODE
SHIFT
UP
Lower limit
setting
(OUT2)
Startup
compensation
time
00000 displayed
Time
Power supply
OUT2
output
7
K3MA-F
Nomenclature
2. Operation indicators
1
2
3. Level indicator
Max
Min
1. Main indicator
SV
T
MAX/MIN
LEVEL
MODE
SHIFT
UP
4. MAX/MIN key
5. Level key
8. Up key
6. Mode key
Name
7. Shift key
Functions
1. Main indicator
Displays current values, parameter names (abbreviations), and comparative value settings.
2. Opera- 1
tion indica- 2
tors
SV
Lit when output 1 is ON.
Lit when output 2 is ON.
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.
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. The level can be switched between operation level and initial setting 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
p
Protect
Not lit
Operation
s
f
Initial setting
Advanced function setting
8
K3MA-F
Dimensions
Terminal cover
(provided)
101.2
91
Main indicator
character size
Panel cut-out
120 min.
14.2 mm
A
B
C
D
E
85
97
7.6 mm
75 min.
0
92+0.5
12
1.3
45+0.50
80
96
44.8
Mounting Recommended Panel Thickness
1 to 8 mm.
Mount the product horizontally.
48
MAX/MIN
LEVEL
MODE
SHIFT
The K3MA-F uses M3 terminals.
A terminal cover is provided.
UP
Application Examples
Displaying conveyor
belt feed speed
K3MA-F
m/min
Monitoring the rotations Displaying the monitor
of a mixer or churner
output from an inverter
as rotations or line speed
rpm
rpm
Inverter
K3MA-F
K3MA-F
Gear
Mixer or churner
Motor
Voltage pulse
Proximity sensor
• Monitoring line speed for a reflow
furnace
• Displaying feed speed for food
processing, conveying, sintering
• Mixers for resin molding
• Powdering/pelleting machines,
centrifugal separators
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)
9
K3MA-F
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.
■ 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.
5.8 mm max.
5.8 mm max.
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.
■ Unit Labels (Provided)
• The unit labels are not attached to the K3MA-F. Select the desired
labels from the provided sheet.
■ LCD Angle of View
The K3MA is designed to provide the best visibility at the angles
shown in the following diagram.
Note: For scales and gauges, use the unit labels that are specified by
the relevant laws or regulations.
10°
30°
■ 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,
deterioration, 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.
10
K3MA-F
Operating Procedures
■ Operations in Run Mode
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.
Measurement
value
MAX/MIN Key
MAX value
MAX/MIN Key
MIN value
MAX/MIN Key
The maximum and minimum values can be reset by pressing the MAX/MIN 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
OUT2 upper-limit value, OUT2 lower limit value 2).
Measurement
value
MAX value
MIN value
OUT1
value
OUT1 upperlimit value
OUT2
value
OUT1 lowerlimit value
OUT2 upperlimit value
OUT2 lowerlimit value
Note: When the comparative value is displayed, it can be changed by pressing the Shift
Key and the Up Key (when key protection is OFF).
■ 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
Protect
Function
Measurement
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 action, Stopped
and other parameters.
Advanced function setting
Setting average processing, display color settings, and other advanced function parameters.
Stopped
Power ON
Level Key
+
MODE Key
for at least user-set time
Operation level
Protect level
Level Key
+
MODE Key
1 s min.
Level Key
1 s min.
Level Key
3 s min.
Measurement in progress
Initial setting level
Measurement stopped
Level change
Level Key
1 s min.
Password input
Advanced function
setting level
11
K3MA-F
■ Parameters
Note: 1. Some parameters are not displayed for certain models.
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 defaults.
Power ON
Operation level
Current value
For models with the
comparative output
function.
MODE
OUT1
value
Set one of these.
−
MODE
OUT1
upper-limit
value
−
MODE
OUT1
lower-limit
value
−
MODE
OUT2
value
−
MODE
Set one of these.
OUT2
upper-limit
value
−
MODE
OUT2
lower-limit
value
−
MODE
12
K3MA-F
To change a setting, press the Shift Key
make the change with the Up Key
.
Press Level
Key
for
more than 3 s.
Press Level Key
again, and then
for less than 1 s.
Advanced-function
setting level
Initial setting level
Press Level
Key
for
more than 1 s.
Pulse frequency
Pulse
frequency
Enter
password
"-0169"
/
Average
processing
/ / /
Scaling
Scaling
input
value
−
Scaling
display
value
−
MODE
Decimal
point
position
−
Models
with the
comparative
output
function
−
OUT2
hysteresis
−
−
Auto-zero
time
Upper Limit
Startup
compensation
time
−
MODE
Upper Limit
Green (red)
Display
color
change
Lower Limit
Upper/Lower
Limits
MODE
−
Green
Red (green)
Red
MODE
Move to
advancedfunction
setting level
/
MODE
Upper/Lower
Limits
OUT2 type
−
MODE
Lower Limit
MODE
OUT1
hysteresis
MODE
MODE
OUT1 type
Unit: times
Comparative hysteresis
MODE
MODE
MODE
/
MODE
MODE
Models
with the
comparative output
function
Parameter
initialization
Display
auto-return
time
−
Move-toprotectlevel time
−
−
Unit: s
MODE
MODE
−
Unit: s
Settings displayed in reversed colors are initial settings.
13
K3MA-F
Press
Level Key +
Mode Key for more than 1 s.
Operation level
Protect level
Press
Level Key +
than preset time.
Mode Key for more
Operation/adjustment
lockouts
/
/
/
/
MODE
Setting level lockouts
MODE
Setting change lockout
/
MODE
Operation/Adjustment Lockouts
■ Initial Settings
Restricts key operations for operation level and adjustment level.
Parameter
Setting
Current value
display
oapt
Power ON
Operation level
Set value
display
0
Allowed
Allowed
1
Allowed
Allowed
2
Allowed
Prohibited
• Initial setting is 0.
• This is not displayed on models with no comparative output function.
Press the Level Key
level.
for 3 s min. to move to the initial setting
Select the pulse frequency for measurement.
Set the scaling values and OUT type as required.
Setting Level Lockouts
Restricts shifting to initial setting level or advanced function setting
level.
Parameter
icpt
Setting
Shift to initial
setting level
Shift to
advanced
function
setting level
0
Allowed
Allowed
1
Allowed
Prohibited
2
Prohibited
Prohibited
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, display auto-return time, or move-toprotect-level time.
Press the Level Key
the operation level.
for more than 1 second to return to
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
wtpt
Setting
Specify set value of OUT 1 and 2.
Setting change by key
operation
off
Allowed
on
Prohibited
Measurement starts.
However, all protect level parameters can still be changed.
14
K3MA-F
■ Setting Example
Initial Settings
The settings for the following example are shown here.
Example: Display conveyor belt feed speed
E2E-X5E1
Proximity Sensor
0.1 m
1
2
Max
Min
SV
MAX/MIN
LEVEL
MODE
SHIFT
UP
K3MA-F-A2 100-240VAC
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
dsp
18850
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: p-fre (pulse frequency), Setting value: 30
2. Set the scaling. The display value (D) is shown with the following
formula.
D = f × α,
f: frequency and
α: prescaling value
The value of α will be internally calculated and registered if the
input value (f) and the display value (D) are set.
The number of rotations or speed is shown with the following formula.
Rotations (rpm)
= Frequency input/No. of pulses
per rotation × 60
Cycle speed D (m/min) = Rotations × roll circumference
= 1/N × f × 60 × d × π
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 × π
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 example so
that 1885.0 is displayed for an input of 100 Hz.
Parameter
Setting value
inp (scaling input value)
100
dsp (scaling display value)
18850
dp (decimal point position)
%%%%.%
Input value
inp
100
When displaying a flowrate (e.g., in l/min or l/h), make the scaling
settings after confirming the I/O characteristics of the flowrate sensor. There are flowrate sensors that output analog signals. If this kind
of flowrate sensor is used, consider using the K3MA-J.
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.
■ 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
Main indicator
Error contents
Countermeasures
Not lit
e111
RAM memory error
Repair is necessary.
Consult your OMRON sales representative.
5
e111
EEPROM memory error
When this error is displayed, press the Level Key for 3 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.
Not lit
Flashes 99999
The scaling display value exceeds 99999.
Promptly change the input to a value that falls within the
specified range.
The scaling value may be inappropriate. Review the scaling value at the initial setting level.
Not lit
Flashes -19999
The scaling display value is lower than −19999.
Promptly change the input to a value that falls within the
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.
In the interest of product improvement, specifications are subject to change without notice.
15
Terms and Conditions Agreement
Read and understand this catalog.
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you
have any questions or comments.
Warranties.
(a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship
for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron
disclaims all other warranties, express or implied.
(b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER
ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the
Products or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at
Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or
replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount
equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty,
repair, indemnity or any other claims or expenses regarding the Products unless Omron’s analysis confirms that the Products
were properly handled, stored, installed and maintained and not subject to contamination, abuse, misuse or inappropriate
modification. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall
not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or
electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice,
recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above
warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.
Limitation on Liability; Etc.
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.
Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself
is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine,
system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product
with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence
thereof.
Performance Data.
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining
suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate
it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability.
Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our
practice to change part numbers when published ratings or features are changed, or when significant construction changes are
made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers
may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at
any time to confirm actual specifications of purchased Product.
Errors and Omissions.
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
2016.4
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2016 All Right Reserved.
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