Datasheet

Frequency/Rate Meter K3MA-F 3
■ Characteristics
■ Measuring Ranges
No-voltage Contact/Open Collector Inputs
■ Input/Output Ratings
Relay Contact Output
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)
Input Measuring range Measuring accuracy Displayable range
No-voltage contact (30 Hz max.) with
ON/OFF pulse width of 15 ms min.
0.05 to 30.00 Hz
±0.1% FS ±1 digit max.
(at 23
±5°C)
–19999 to 99999
(with scaling function)
Open collector (5 kHz max.) with
ON/OFF pulse width of 90
µs min.
0 to 5 kHz
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)