Omron K3MA-J - Preface and General Precautions; General Precautions

Process Meter K3MA-J 3
■ Characteristics
■ Measuring Ranges
Process Voltage/Current Inputs
■ Input/Output Ratings
Relay Contact Output
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 pro-
cessing 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 po-
sition 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)
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 M
Ω min. –19999 to 99999
(with scaling function)
0.000 to 5.000 V
–5.000 to 5.000 V
±0.1% FS ±1 digit max.
(at 23
±5°C)
–10.00 to 10.00 V
DC current 4.00 to 20.00 mA/
0.00 to 20.00 mA
±0.1% FS ±1 digit max.
(at 23
±3°C)
45
Ω
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
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)
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)