Omron, K3MA-J Series

Multi-range DC voltage/current input.
Front-panel key operation for easy setting.
Average processing function suppresses flicker.
Scaling, front-panel forced-zero, zero-limit functions.
Easy confirmation of max/min display.
Short 80-mm depth (measured from edge of face plate).
Finger protective cover (standard equipment) guards against electric shock.
Water- and dust-proof NEMA4X (IP66 equivalent) front panel.
Recognized to U.S. and Canadian requirements under the Component Recognition Program of UL.
CE marking.

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)	6 VA max.	4.5 VA max. (24 VAC) 4.5 W max. (24 VDC)
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 common mode. ±1 μs, or 100 ns for square-wave noise with 1 ns.	±480 V on power supply terminals in normal mode. ±1,500 V in common mode. ±1 μs, or 100 ns for square-wave noise with 1 ns.
Vibration resistance	Vibration: 10 to 55 Hz, 0.35-mm half amplitude 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)
Ambient humidity	Operating: 25% to 85% (with no condensation)
Approved safety standards	UL61010-1, CSA C22.2 No.61010-1-04, conforms to EN61010-1 (Pollution degree 2/ overvoltage category II) Conforms to VDE0106/P100 (finger protection)
EMC	(EMI) EN61326-1 Industrial electromagnetic environment Emission Enclosure: CISPR 11 Group 1 class A: CISRP16-1/-2 Emission AC Mains: CISPR 11 Group 1 class A: CISRP16-1/-2 (EMS) EN61326-1 Industrial electromagnetic environment Immunity ESD: EN61000-4-2: 4 kV contact discharge, 8 kV air discharge Immunity RF-interference: EN61000-4-3: 10 V/m (amplitude-modulated, 80 MHz to 1 GHz) Electrical Fast Transient Noise: EN61000-4-4: 2 kV (power line) Immunity Burst Noise: 1 kV line to line (I/O signal line) Immunity Surge: EN61000-4-5: 1 kV (power line), 2 kV line to ground (power line) Immunity Conducted Disturbance: EN61000-4-6: 3 V (0.15 to 80 MHz) Immunity Voltage Dip/Interrupting: EN61000-4-11: 0.5 cycle, 0, 180°, 100% (rated voltage)
Weight	Approx. 200 g

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
Input impedance	Current input: Approx. 45Ω, Voltage input: 1MΩ min.
Sampling period	250 ms
Display refresh period	Sampling period (sampling times multiplied by number of measurements for averaging if average processing is selected.)
Max. displayed digits	5 digits (-19999 to 99999)
Display	7-segment digital display, Character height: 14.2 mm
Polarity display	"-" is displayed automatically with a negative input signal.
Zero display	Leading zeros are not displayed.
Scaling function	Programmable with front-panel key inputs (range of display: -19999 to 99999). The decimal point 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	Forced-zero (with front-panel key) Zero-limit Scaling teach function Display color change (green (red), green, red (green), red) OUT type change (upper limit, lower limit, upper/lower limit) Average processing (simple average)
Output	Relays: 2 SPST-NO
Delay in comparative outputs	750 ms max.
Degree of protection	Front panel: NEMA4X for indoor use (equivalent to IP66) Rear case: IEC standard IP20 Terminals: IEC standard IP00 + finger protection (VDE0106/100)
Memory protection	Non-volatile memory (EEPROM) (possible to rewrite 100,000 times) (with terminal cover attached)

Measuring Ranges

Process Voltage/Current Inputs

Input	Measuring range	Measuring accuracy	Input impedance	Displayable range
DC voltage	1.000 to 5.000 V	±0.1% FS ±1 digit max. (at 23±3°C)	1 MΩ min.	-19999 to 99999 (with scaling function)
	0.000 to 5.000 V	±0.1% FS ±1 digit max. (at 23±3°C)
	-5.000 to 5.000 V	±0.1% FS ±1 digit max. (at 23±5°C)
	-10.00 to 10.00 V	±0.1% FS ±1 digit max. (at 23±5°C)
DC current	4.00 to 20.00 mA/	±0.1% FS ±1 digit max. (at 23±3°C)	45 Ω
DC current	0.00 to 20.00 mA	±0.1% FS ±1 digit max. (at 23±3°C)	45 Ω

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	1.5 A at 250 VAC, 1.5 A at 30 VDC
Min. permissible load (P level, reference value)	10 mA at 5 VDC
Mechanical life	5,000,000 times min.
Electrical life	100,000 times min.

K3MA-J

Mounting Recommended Panel Thickness 1 to 8 mm.
Mount the product horizontally. The K3MA-J uses M3 terminals.

TITLE	DOCUMENT TYPE	SIZE
K3MA-J	Catalog	1524KB
K3MA Series digital panel meters	Manual	7460 KB
K3MA-[] digital panel meter	Instruction Manual	4635 KB

Ratings

Characteristics

Measuring Ranges

Process Voltage/Current Inputs

Input/Output Ratings

Relay Contact Output

K3MA-J

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