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Pulse Counter

Reversible Counter (with Calculation Function)

MODEL 472A

  • ■ Wide range application fields such as position measurement, level monitoring, flow rate measurement etc.
  • ■ 15.2 mm and 7.6 mm LED adoption. Two colors display available: Red and Green.
  • ■ 2 inputs calculation function are available. Selection is possible from A, B, A+B, A-B
  • ■ Analog and BCD output can be added later.
  • ■ Available high speed 120 kHz type(472B

Operation manual

Standard Specifications

Model Designation

472A - - - - - -

①Input signal

Code Specifications
1 NPN open collector 2 input
2 Voltage pulse 2 input

②Power supply

Code Power Source Voltage
A AC 100 to 240 V
9 DC 24 V
C DC 110 V 

③Sensor power supply

Code Specifications
3 DC 12 V ± 5%  100 mA
5 DC 24 V ± 5% 60 mA

④Mounting, Sensor

Code Specifications
X null (provided with open collector AL1, AL2)
1 Photo MOS relay 2 points expanded (AL3, AL4)

⑤Analog output

Code Specifications
X null
04 DC 0 to 5 V / More than 1 kΩ
05 DC 0 to 10 V / More than 1 kΩ
09 DC 1 to 5 V / More than 1 kΩ
29 DC 4 to 20 mA / Less than 510 Ω

⑥BCD output

Code Specifications
X null
DN Open collector output (NPN)

General Specifications

Input signal 472A-1 For 472A-1 (no voltage contact or open collector NPN):
Residual voltage 3V or less
Contact capacity 12V 10mA
(In case of relay contact, pay attention to the erroneous count due to chattering.)
472A-2 For 472A-2 (voltage pulse):
Input resistance approx. 24 kΩ
Threshold value “H” = 4.5 to 30 V “L” = 0 to 2 V
Counting system Standard A: Count value corresponding to IN-A
B: Count value corresponding to IN-B
A+B: Addition of A and B
A-B: Reduction between A and B
Phase Differential Count up when IN-A is advanced from IN-B by 90°
Count down when IN-A is lag from IN-B by 90°
Command Input Count up or down the IN-A input pulse by the command of IN-B ON/OFF.
Batch-1 & Batch-2 Selectable when provided with comparator output AL3, AL4.
Counting speed 10 Hz / 100 Hz / 1 kHz / 10 kHz, switchable by setting
Display range Both Display-1 and display-2: -999999 to 999999
Display for number of times of over, for both display-1 and display-2: -99 to 99
Pulse coefficient (m) 1×10-6 to 9999
Pulse division ratio (n) Number of pulse per rotation 1/1 to 1/1000
Display value (d) (d)Display value =(p)number of pulse ×(m)Pulse coefficient ×(n)Pulse division ratio
Display accuracy ±0 digit at pulse coefficient 1 and pulse division ratio 1
Display Display-1 side (lower 6 digits): 7 segments display, red/green, character height 15.2 mm
Display-1 side (upper 2 digits), Display-2 side: 7 segments display, red, character height 7.6 mm
With zero suppress function
Display cycle Approx. 100 msec.
Decimal point Decimal option selectable from 0, 0.0, 0.00 or 0.000 (not external controllable)
Key protection Function which makes inable to change of setting contents.
Initialization function Returns to factory shipment setting.
Control input Pause / Latch Pause – Counting is prohibited
Latch – Counting is continued, display is held
Reset L level input or no voltage contact input
Sensor power supply DC 12 V ± 5% 100 mA or DC 24 V ± 5% 60 mA
Comparator output Standard AL1 to 2 open collector (NPN), Contact capacity DC 30 V 30 mA
Option AL3 to 4 photo MOS relay, Contact capacity AC / DC 150 V 80 mA
Analog output Option 0 to 5 V, 0 to 10 V, 1 to 5 V, 4 to 20 mA
BCD output Option 6 digits  Open collector output
Output capacity: DC 30 V, 10 mA
with a cable (2 m).
Compensation for blackout The totalized value is memorized in non-volatile memory and retained. No count is made during the blackout. The data retaining duration is about 10 years.
Power supply AC 100 to 240 V 50/60 Hz, DC 24 V, DC 110 V
Power consumption AC 100 V … Approx. 11 VA
AC 200 V … Approx. 15 VA
DC 24 V … Approx. 250 mA
DC 110 V … Approx. 50 mA
Operating temperature 0 to 50°C
External dimensions 96(W) × 48(H) × 133.3(D) mm
Weight Approx. 300 g
Protection degree Front panel IP65, Rear case IP20, Terminal block section IP00
Mounting method Depends on exclusive bracket.

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