3
K3MA-J
■
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 (cos
φ
= 1)
Inductive load (cos
φ
= 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
Max. contact voltage
250 VAC, 150 VDC
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)
