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Direction Discrimination Magnetic Gear Speed Sensor RFP Series

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Direction Discrimination & Support for Various Modules with Just One Unit

Detects both forward and reverse directions with a single unit (compatible with gear m1/1.5/2 / involute gear verified). [Patent Pending]

Contributes to reducing work costs such as hole machining and installation adjustment.

Detects magnetic gear rotation from 0Hz, enabling detailed monitoring of movements during start-up and stop.


RFP16A/RFP16D

Standard Product Features

Detects Both Forward and Reverse Directions with 1 Unit

Contributes to reducing hole drilling during installation, mounting adjustment work, and costs

Conventional Product
Requires 2 sensors to detect both forward and reverse directions
RFP16
Detects both forward and reverse directions with 1 unit

IP67:
Seamless Tip and Conical PressTM

Metal case with integrated tip and main body machining
Traditional cable extraction technology Conical PressTM


Sensor Detection Surface / Conical PressTM

Supports m1, m1.5, m2 with 1 Unit

High design flexibility and reduced management costs

Includes Setting Card

Check the installation angle for each gear module with a single card
Check by aligning the arrow on the card with the forward rotation direction of the gear.


G: Gear forward rotation direction

2 Models by Output Signal

Proprietary semi-open collector output circuit eliminating the need for pull-up resistors

[RFP16A-85] A/B-phase signal output


[RFP16D-85] Speed/direction discrimination signal output

Measurement Possible from 0Hz

Detailed verification of movements during start-up and stop


Equipped with LED indicator

A/B-phase signal type Orange LED: A-phase / Green LED: B-phase
Speed/direction discrimination signal type Orange LED: Speed signal

RFP*Demo display image

[Product Introduction Video]

Applications

 Click here for a list of applications > 

Rotational Speed Measurement for Hydropower Generation: Flow Rate Control by Governor

 Learn more > 

Operation Check, Maintenance Inspection, and Testing of Backup Power Supplies / Emergency Generators

 Learn more > 

Various Measurements in Wind Tunnel Experiments: Vehicles, Architectural and Civil Engineering Structures, etc.

 Learn more > 

Transmission Experiments and Testing

 Learn more > 

Motorcycle Speed Measurement

 Learn more > 

Hydraulic Pump Rotation Measurement

 Learn more > 

Speed and Acceleration Measurement of Dynamometers, Alternators, etc.

 Learn more > 

Speed Conversion to CAN

 Learn more > 

Speed → CAN

With gear sensors and measuring instruments/signal converters

Differential Sensing + Transmission (Line Driver)
For noise issues at measurement sites

 Learn more > 

Technical Information | Mechanism and Principles of Rotation Sensors

 Learn more > 

Extensive Customization Options

Fixed Flange Mounting
No gap adjustment / Easy installation

Specified Connector Mounting
Easy replacement


Connector Mounting
Tip Shape Modification
Cable Length Modification
Output Circuit Modification and more
Various customizations available

Main Specifications

Name Direction-Discriminating Magnetic Gear Speed Sensor
Model RFP16A-85
RFP16A-85-P4M [With Connector]
RFP16D-85
RFP16D-85-P4M [With Connector]
Output Signal*1 Phase A Signal / Phase B Signal *2 Speed Signal / Direction Discrimination Signal
(Forward: H Level, Reverse: L Level) *2
Output Format Semi-Open Collector (Open Collector + Pull-up) Output
Pull-up Resistor Phase A Signal: 3.3kΩ / Phase B Signal: 3.3kΩ Speed Signal: 3.3kΩ / Direction Discrimination Signal: 10kΩ
Target Object Magnetic material (S45C Carbon steel for machine structural use, JIS G 4051, etc.) Standard involute gear
Detection Distance *3 m1: 0.1 - 1.0mm*3 / m1.5: 0.1 - 2.0mm*3 / m2: 0.1 - 2.7mm*3
Response Frequency Range *3 0 - 15kHz*3 
Output Voltage Approx. 0.5V lower than the supply voltage
Output Current 30mA max. (Sink current)
Supply Voltage Range DC 7 - 25V
Current Consumption 40mA max.
Operating Temperature Range *4 -40℃ to +140℃ (Power supply < 15V) /
-40℃ to +126℃ (≥ 15V)
-20℃ to +80℃
Magnet Polarity Tip S Pole
Operation Indicator LED Orange LED: Phase A / Green LED: Phase B Orange LED: Speed Signal
Insulation Resistance  50MΩ or more (With DC 500V megger, between all cables tied together and case)
Dielectric Strength AC 500V 50/60Hz 1 min, between all cables tied together and case
Vibration & Shock Resistance JIS E 4031:2013 (Railway applications - Testing for vibration and shock)  [Vibration functional test] X, Y, Z: 5.4m/s2 rms each axis in both directions, 10 min each
[Vibration durability test] X, Y, Z: 30.6m/s2 rms each axis for 5 hours  [Shock test] 300m/s2, 18 times in total (3 times each in positive and negative directions for 3 orthogonal axes)
Temperature Test Conforms to JIS C 60068-2-14:2011
External Dimensions M16 (P=1 screw thread) x L84
Weight*5 RFP16A-85: Approx. 230g / RFP16A-85-P4M: Approx. 250g
(Including approx. 65g/m for cable part)
RFP16D-85: Approx. 230g / RFP16D-85-P4M: Approx. 250g
(Including approx. 65g/m for cable part)
Sensor Body Case Brass (Nickel-plated)
Cable 2m PVC 4-core shielded cable, core wire 0.3sq
Accessories Nuts: 2 pcs, Toothed lock washer: 1 pc, Setting card: 1 sheet
Protection Rating IP67
RoHS RoHS compliant
Price (Excl. Tax)
Prices as of February 2024
RFP16A-85: 41,800 JPY
RFP16D-85: 41,800 JPY
RFP16A-85-P4M: 44,000 JPY
RFP16D-85-P4M: 44,000 JPY
*1: Initial state after power-on: Phase A signal, Phase B signal, and speed signal are at L level; direction discrimination signal is at H level.
*2: Forward and reverse directions are based on the installation shown in Figure 2.
*3: Verified values at a gear tooth width of 10mm.
*4: If the upper temperature limit (100℃) of the operation indicator LED is exceeded, LED performance may degrade, but output is not affected. The connector part of the connector-equipped model (-P4M) has an upper limit of 85℃.
*5: Weight includes main unit, 2 nuts, 1 toothed lock washer, and 2m cable.
Specifications are subject to change without notice.
RFP16A-85
Phase A/B Signal Output
Direct-cable (Standard specification)

Brown: +V DC 7 - 25V
  Blue: 0V
  White: Phase A Signal
  Black: Phase B Signal
  Shield: Insulated from the body

[A] M16 P=1 screw thread
      [B] Supplied nut and toothed lock washer
      [C] 14mm wrench flat
      [D] Operation indicator LED: Phase A signal / Phase B on back

RFP16D-85
Speed / Direction Discrimination Signal Output
Direct-cable (Standard specification)

Brown: +V DC 7 - 25V
  Blue: 0V
  White: Speed Signal
  Green: Direction Discrimination Signal
  Shield: Insulated from the body

[A] M16 P=1 screw thread
      [B] Supplied nut and toothed lock washer
      [C] 14mm wrench flat
  [D] Operation indicator LED: Speed signal

RFP16A-85-P4M
Phase A/B Signal Output
Cable with Connector

1: +V DC 7 - 25V
          2: 0V
          3: Phase A Signal
          4: Phase B Signal
          Shield wire is connected via connector shell

[E] LF10WBPD-4P Connector Male*
*Hirose Electric connector

RFP16D-85-P4M
Speed / Direction Discrimination Signal Output
Cable with Connector

1: +V DC 7 - 25V
          2: 0V
          3: Speed Signal
          4: Direction Discrimination Signal
          Shield wire is connected via connector shell

[E] LF10WBPD-4P Connector Male*
*Hirose Electric connector

Options

Extension Cables

Available in 3 different lengths with either Y-type crimp terminals or plug connectors at the cable ends.
Sensor (Connector Type)
Model: RFP16A-85-P4M
RFP16D-85-P4M
LF10WBPD-4P* 4-pole Male
Extension Cable Model  
Cable Length 5m Cable Length 10m Cable Length 20m
CY-RA-005 CY-RA-010 CY-RA-020 For RFP16A-85-P4M
Brown: +V DC 7 - 25V
  Blue: 0V
  White: Phase A Signal
  Black: Phase B Signal
  Shield: Insulated from the body
LF10WBJ-4S* 4-pole Female   Y-type crimp terminal 1.25Y-3
CY-RD-005 CY-RD-010 CY-RD-020 For RFP16D-85-P4M
Brown: +V DC 7 - 25V
  Blue: 0V
  White: Speed Signal
  Green: Direction Discrimination Signal
  Shield: Insulated from the body
LF10WBJ-4S* 4-pole Female   Y-type crimp terminal 1.25Y-3
CC-RP-005 CC-RP-010 CC-RP-020 Common to RFP16A/D-85-P4M
1: +V DC 7 - 25V
2: 0V
3: Phase A Signal / Speed Signal
4: Phase B Signal / Direction Discrimination Signal
Shield wire is connected via connector shell
LF10WBJ-4S* 4-pole Female   LF10WBPD-4P* 4-pole Male
*Hirose Electric connector

【Caution】
Extending the sensor cable makes it more susceptible to external noise.
Since the degree of influence varies depending on conditions, we recommend verifying performance in your actual operating environment.

Notice Regarding Specification Changes and Price Revision for RFP16A-85
● Operating temperature range expanded to -40℃ to +140℃ (Effective from Sep. 1, 2017)
(Applicable when supply voltage for RFP16A is under DC 15V. For DC 15 to 25V, it is -40℃ to +126℃. For RFP16D, it is -20℃ to +80℃.)
● Notice of Price Revision [Price Reduction] (Effective from Jun. 1, 2017) Click here for details →

Related Products: Enhanced Benefits When Combined with Sensors

Combining gear sensors with our F/V converters, speed meters, high-speed pulse counters, etc., enables real-time measurement of rotational speed, angle, and more, while offering various benefits.

High Precision & High-Speed Response

PeriomaticTM F/V converters and speed meters achieve high precision and high-speed response under all conditions, from stop, ultra-low speed to high speed, rapid acceleration, and rapid deceleration.



 What is PeriomaticTM > 

Improved Measurement Reliability & Safety

Peace of mind with equipment matching from the same manufacturer. Factory setting changes are also available (measuring instruments).


*Image for illustrative purposes

Sensor Power Supply Capability*

Eliminates the need for a separate power supply for the sensor.
*Optional for some models. The GP series does not require a power supply.

Sensor
Power


Measurement
Signal

Consolidated Contact Window

Reliable and convenient one-stop support for connections, settings, model selection, operation, and more.


*Image for illustrative purposes

 Contact Us > 

For Rotational Speed Measurement

F/V Converters
1-Pulse Response & Deviation Output Functions

 Learn More > 

Speed Meters
Various types including panel meters and handheld types

 Learn More > 

Signal Converters
For noise countermeasures, long-distance wiring, and signal splitting

 Learn More > 

Enclosed Customized Products
Check multiple channels at a glance. CAN/analog output also available

 Learn More > 

For Rotational Angle Measurement

High-Speed Analog Pulse Counters
For measuring rotational slip, etc.

 Learn More > 

Counters
Various types including panel meters and handheld types

 Learn More > 

Signal Converters
For noise countermeasures, long-distance wiring, and signal splitting

 Learn More > 

Enclosed Customized Products
Multi-channel CAN output, arithmetic output between 4 channels, etc., also available

 Learn More > 

Magnetic Gear Speed Sensor
Outputs magnetic field changes caused by the rotation of magnetic materials such as gears as pulse signals.
> Technical Info: View Types and Features of Pulse Signals

IMG12/16 Magnetic Gear Speed Sensor

> To Product Page
Noise suppression & Power supply reverse connection protection

Response: 0 - 20kHz
Temperature: -20 to +105℃
Power Supply: DC 4.5 - 25(17)V

Output Circuit:
Semi-open collector*1
Line driver
Differential (balanced) CMOS logic*2

Detects from 0Hz, and jitter suppression technology enables accurate rotational measurement

Line driver output type supports environments with long wiring

Equipped with a power supply reverse connection protection circuit to prevent failures caused by operational errors

FDP10/16 Magnetic Gear Speed Sensor

> To Product Page
Full-thread, general-purpose, easy installation

Response: 0 - 15kHz
Temperature: -20 to +80℃
Power Supply: DC 4.5 - 25V

Output Circuit:
Semi-open collector*1

Pursued ease of use as a general-purpose sensor

The output circuit is unbalanced, and an output voltage nearly equivalent to the sensor power supply voltage is obtained

Equipped with a semi-open collector output circuit so it can be connected directly even if the pull-up voltage at the signal receiving end is higher than the sensor output voltage

FP12T-50 Magnetic Gear Speed Sensor

> To Product Page
Wide temperature range

Response: 10 - 30kHz
Temperature: -40 to +150℃
Power Supply: DC 5 - 12V

Output Circuit:
Open collector


Built-in amplifier, usable at high temperatures (150℃)

RFP16A/D Magnetic Gear Speed Sensor

> To Product Page
Detects both forward and reverse directions with a single unit

Response: 0 - 15kHz
Temperature:
-40 to +140℃ (RFP16A Power supply < 15V)
-40 to +126℃ (RFP16A Power supply ≥ 15V)
-20 to +80℃ (RFP16D)
Power Supply: DC 9 - 25V

Output Circuit:
Semi-open collector*1
(Phase A/B or Speed/Direction Discrimination Signal)

Detects both forward and reverse directions with a single unit. Reduces work such as hole machining and mounting adjustment

*Compatible with m1/1.5/2 / Involute gear verified

GP12/16 Power-Generating Electromagnetic Pickup

> To Product Page
Self-generating type requiring no power supply

Response: 220 - 50kHz
Temperature: -20 to +100℃
Power Supply: No power supply required

Output Circuit:
Voltage output proportional to speed*3
0.5Vp-p or more

Self-generating type using a magnet and detection coil. No power supply required

Approaches the tooth tip of a gear, etc., and outputs a frequency signal proportional to the rotational speed

*1 Semi-open collector (open collector + pull-up): A proprietary output circuit developed by our company that allows direct connection even if the pull-up voltage at the signal receiving end is higher than the sensor power supply voltage.
Unlike a simple open collector, pulse output with a voltage close to the sensor power supply voltage can be obtained.
*2 Differential (balanced) CMOS logic can be used as an unbalanced signal. When used as a balanced signal, please check the power supply voltage and output voltage specifications.
*3 In principle, the output voltage of the GP type is proportional to speed, but the GP type prevents unnecessary increases in output to improve reliability.

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