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K-54

Temperature Meter 

K3MA-L

Precautions

 !WARNING

Do not touch any of the terminals while the power is being sup-
plied. 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 re-
sult in electric shock.

 !Caution

Do not allow metal objects or wire cuttings 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, re-
sulting 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 con-
necting it. Incorrect or reverse connections may damage or burn
out internal components in the product.

4.

Tighten the terminal screws securely. The recommended tighten-
ing torque is 0.43 to 0.58 N

m. Loose screws may 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 appro-
priate 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.

Application

General Precautions

1.

Do not use the product in the following locations:

• Locations subject to direct radiant heat from heating equip-

ment.

• Locations subject to exposure to water, oil, or chemicals.

• Locations subject to direct sunlight.

• Locations subject to dust or corrosive gases (particularly, sul-

furic 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 suf-
ficient 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 generate
strong, high-frequency fields (such as high-frequency welders or
sewing machines) or surges.

Install surge absorbers or noise filters on nearby devices that gen-
erate noise (particularly motors, transformers, solenoids, magnet
coils, and other devices that have a high inductance component).
Do not connect a surge absorber to the temperature sensor input
section of the K3MA-L.

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.

Temperature Inputs

Separate the lead wire that connects the product with a tempera-
ture sensor from the load line to prevent the product from being
affected by inductive noise.

When using a noise filter for the power supply, check for the voltage
and current and install it as close as possible to the Temperature
Meter.

Do not install the product near radios, television sets, or wireless
devices. Doing so may cause reception interference.

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 Temperature Meter.

Use and store the product within the temperature and humidity
ranges given in the specifications. When gang-mounting Tempera-
ture Meters or arranging them vertically, heat generated by the
Temperature 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 Tempera-
ture Meters. Do not, however, allow only the terminals to be cooled.
Doing so will increase measurement error.

The life of the output relays are 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.

+

Line filter

Power 
supply 
input

Tempera-
ture Meter

Signal 
input

Tempera-
ture Meter

Power 
supply 
input

Surge absorber

Summary of Contents for K3MA-L

Page 1: ...EMA4X IP66 equivalent front panel Recognized to conform to U S and Canadian requirements un der the Component Recognition Program of UL CE marking Model Number Structure Model Number Legend 1 Input Type L Platinum resistance thermometer or thermocouple 2 Output Type None No output C With relay contact output SPDT 3 Supply Voltage 100 240VAC 100 to 240 VAC 24VAC VDC 24 VAC VDC Ordering Information ...

Page 2: ...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 Ambient humidity Operating 25 to 85 with no condensation Approved safety standards UL3121 1 conforms to EN61010 1 Pollution degree 2 overvoltage...

Page 3: ...rity display is displayed automatically with a negative input signal Zero display Leading zeros are not displayed Input shift Input shift equivalent to the setting value supported for all points within the sensor measurement range Hold function Max hold maximum value Min hold minimum value Hysteresis setting Programmable with front panel key inputs 0001 to 9999 Other functions Display color change...

Page 4: ...re of 20 C 100 000 times min at a rated load switching frequency of 10 time min 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 For thermocouple input For platinum resistance thermometer input OUT1 A B B A1 A2 E1 E2 E3 E4 E5 E6 E4 E5 E6 Recommended DC power supply eg OMRON S8VS Terminal No Name De...

Page 5: ...300 to 1500 F 1 199 9 to 500 0 C 1999 to 900 0 F 2 0 0 to 100 0 C 0 0 to 210 0 F 3 JPt100 199 9 to 500 0 C 199 9 to 900 0 F 4 0 0 to 100 0 C 0 0 to 210 0 F 5 Thermocouple K 200 to 1300 C 300 to 2300 F 6 20 0 to 500 0 C 0 0 to 900 0 F 7 J 100 to 850 C 100 to 1500 F 8 20 0 to 400 0 C 0 0 to 750 0 F 9 T 200 to 400 C 300 to 700 F 10 199 9 to 400 0 C 199 9 to 700 0 F 11 E 0 to 600 C 0 to 1100 F 12 L 10...

Page 6: ...o 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 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 T...

Page 7: ...X 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 va...

Page 8: ...oring the temperature of an industrial furnace Monitoring the bearing temperature for a generator motor E5EN K3MA L Alarm output Molding equipment K3MA L K3MA L Industrial furnace PID control Generator motor Alarm output Monitoring the temperature of an indus trial furnace sintering furnace Monitoring alarm function for disinfect ing equipment Monitoring failsafe checking abnormal temperatures in ...

Page 9: ...cts the panel to secure the K3MA L 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 L Select the desired labels from the provided sheet Note For scales and g...

Page 10: ...roduct 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 generate strong high freq...

Page 11: ...inue Operation Displaying current values and setting OUT 1 value Continue Adjustment Setting communications writing control Continue Initial setting Making initial settings of input type output operating action and other parameters Stopped Advanced function setting Setting average processing display color settings and other ad vanced function parameters Stopped 123 4 Power ON Operation level Prote...

Page 12: ...eters are not displayed for certain models 2 The K3MA L 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 Adjustment level Press Level Key for less ...

Page 13: ...alization Average processing OUT1 type Temperature unit Temperature unit OUT1 type Upper Limit Lower Limit Upper Lower Limits Models with the compara tive out put function MODE MODE MODE MODE Models with the compar ative out put function Display color change Display auto return time Move to protect level time Green red Green Red green Red Unit s Unit s OUT1 Hysteresis Unit times MODE MODE MODE MOD...

Page 14: ... than preset time Paramet er Setting Operation level Moving to adjustment level Process value display Set value display oapt 0 Allowed Allowed Allowed 1 Allowed Allowed Prohibited 2 Allowed Prohibited Prohibited Parameter Setting Shift to initial setting level Shift to advanced function setting level icpt 0 Allowed Allowed 1 Allowed Prohibited 2 Prohibited Prohibited Parameter Setting Setting chan...

Page 15: ...ain indicator Error contents Countermeasures Not lit e111 RAM memory error Repair is necessary Consult your OMRON sales repre sentative 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 re pair is necessary Consult your OMRON sales repre sentative Not lit Flashes s err...

Page 16: ...pplication or use of the products At the customer s request OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the products This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product machine system or other application or use The following ar...

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