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Torque Detector RH series

The RH series makes torque measurement range wider beyond expectation.

As the shift to electrification of various products, the development of quieter and higher quality motors has been required. The RH series can accurately detect torque fluctuations with high rigidity, and supports high-speed rotation.
It helps the development of products with outstanding quietness by minimizing cogging torque and torque ripple that cause vibration and noise.

Feature

High rigidity: Highly accurate detection of torque fluctuation with high response
The RH series is a torque detector that can accurately detect torque fluctuations with high torsional rigidity about 4.5 times compared to the existing products .
 

Example of RH series cogging torque measurement (compared to a general torque detector)

This is an example of measuring cogging torque of the RH torque detector and a general torque detector with the CF-9400 FFT analyzer.

 

The power spectrum above shows the measurement result of the cogging torque of the RH series and a general torque detector.
The RH series has higher torsional rigidity than general detectors, and also its resonance frequency is higher. The torque measurement (the torque ripple due to the first order component of cogging torque) can be performed with higher accuracy. In addition, it enables to measure flat and higher frequency.

High speed torque measurement: Rotation speed up to 20,000 r/min

In motors of EV scooters and compressor for air conditioners, the demand for high-speed rotation has been increasing as well.
The RH series provides high-speed rotation measurement up to 20,000 r/min and stable measurement from low (*) to high speed rotation.
(2.5 times faster than the existing models)

Direct signal output: Ideal for installing into system

RH series can be used as a stand-alone torque detector without a display unit and the direct signal output has achieved cost saving.

Example of system configuration

High accuracy: Perform performance evaluation tests of motors and other equipment with high accuracy

The RH series torque detector has achieved highly accurate measurement with ±0.05%/FS of linearity including hysteresis (1/2 compared with the existing models).

Compact: Weight and volume are reduced to about 1/3 compared to the existing models

Smaller and lighter than the existing models and having the same center height to easily replace and handle.

Comparison of dimensions with SS series

Example of system configuration

RH series Torque Detector alone
RH Series Torque Detector Connecting With The TQ-5300 Torque Meter
 

Specifications

Measurement section
 RH-1105RH-1205
Torque DetectionRated torque10 N・m 20 N・m
Breakdown torque400 % or more of rated torque
Limit torque200 % or more of rated torque
Linearity±0.05%/ FS or less (screen display with TQ-5300 connected)
Influence on temperature at zero point±0.02 %/FS/°C or less (screen display with TQ-5300 connected)
Influence on temperature at span point±0.02 %/FS/°C or less (screen display with TQ-5300 connected)
Rotation speed detectionNumber of output pulses (standard)4 P/R (detected with hall IC and magnet)
Number of output pulses
(optional RH-0501 rotation detection gear 60 P/R mounted)

60 P/R (optional MP-981 or MP-9820 used for rotational speed detection)

Output section
Analog torque outputOutput formatVoltage output 0 to ±10 V/F.S
Analog conversion methodCycle conversion method
(converted to torque value at each cycle and then converted to analog voltage)
Minimum allowable load100 kΩ
Linearity±0.10 %/FS or less
Zero point offset0.05 V or less
ConnectorBNC (female)
Torque frequency outputOutput formatLine driver output 10 kHz ±5 kHz
ConnectorR03-RB12F
Rotational speed pulse outputOutput itemHall IC pulse output on which waveform shaping is processed
Output formatOpen collector output with pull-up to +5 V by 330 Ω resistor
Minimum allowable load10 kΩ
ConnectorR03-RB5F
Interface section
Torque zero inputInput itemTorque zero correction value acquisition start
Contact input; Makes a torque at no-load zero automatically through external contact.
Input signalNo-voltage contact input Open voltage: 5.25 V or less Short-circuit current: 1 mA or less
ConnectorR03-RB5F
READY outputOutput itemContact output: Contact closes in the torque measurement state.
Output formatPhoto MOS relay
Load voltageDC 30 V or less
Load current100 mA or less
ON-resistance10 Ω or less
ConnectorR03-RB5F
General specifications
 RH-1105RH-1205
Power supply voltageDC 24 V (8-30 V)
Power consumption20 W or less
Power input connectorR03-RB12F
Operating temperature range0~+50 °C *1
Operating humidity range20 to 85 %, no dew condensation*1*2
Storage temperature range-10~+60 °C *1
Storage humidity range20 to 85 %, no dew condensation*1*2
CE marking
Low Voltage Directive22014/35/EU standard EN61010-1
EMC Directive2014/30/EU standard EN61326-1
RoHS Directive22011/ 65/ EU standard EN IEC 63000, *Four substances added by (EU) 2015/ 863
FCCFCC Part 15 Subpart B Class A
ICESICES-003 Issue6 + Amendment1 ClassA
SafetyIEC61010-1: Overvoltage category I, grounding protection class III, contamination level 2
Torsional rigidity (design value)10 N·m : 3.6 kN·m/rad20 N·m : 6.9 kN·m/rad
Inertia moment (design value)10 N·m : 24.3×10-6 kg·m220 N·m : 24.6×10-6 kg·m2
Rated rotational speed (standard)16,000 r/min
Rated rotational speed (with optional RH-0502 dynamic balance adjusted)20,000 r/min
Supplied itemsInstruction manual, Inspection chart, Key

*1: When exposed to a high temperature environment for a long time, it may affect the zero torque value. Avoid long-time exposure or correct for zero torque before usage.
*2: Avoid a hot and humid place for long-time continuous use or storage. It may affect the performance.

Options

ModelName
RH-0105Torque signal cable (5 m)
RH-0110Torque signal cable (10 m)
RH-0205Power cable (5 m)
RH-0210Power cable (10 m)
RH-0305Rotation signal cable (5 m): for connecting RH series with TQ-5300 series
RH-0310Rotation signal cable (10 m): for connecting RH series with TQ-5300 series
MX-7105Rotation signal cable (5 m): for connecting MP-981/9820 with TM-3000 series
MX-7110Rotation signal cable (10 m): for connecting MP-981/9820 with TM-3000 series
MX-8105Rotation signal cable (5 m): for connecting MP-981/9820 with TQ-5300 series
MX-8110Rotation signal cable (10 m): for connecting MP-981/9820 with TQ-5300 series
RH-0405Torque zero input cable (torque zero, READY output, and rotation signal cable) 5m
RH-0410Torque zero input cable (torque zero, READY output, and rotation signal cable) 10m
RH-0501Rotation detection gear 60 P/R
MP-981Magneto-electric rotation detector
MP-9820Magneto-electric rotation detector
RH-0502Dynamic balance adjustment
MX-101Signal cable (1.5m)
MX-105Signal cable (5m)