The RH series makes torque measurement range wider beyond expectation.

RH-1105

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)

Installation example of rotation detector


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 alone


RH series Torque Detector connecting with the TQ-5300 Torque meter

 

RH series Torque Detector connecting with the TQ-5300 Torque meter



Specifications

Measurement section
 
 RH-1105 RH-1205
Torque Detection Rated torque 10 N・m  20 N・m
Breakdown torque 400 % or more of rated torque
Limit torque 200 % 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 detection Number 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 output Output format Voltage output 0 to ±10 V/F.S
Analog conversion method Cycle conversion method
(converted to torque value at each cycle and then converted to analog voltage)
Minimum allowable load 100 kΩ
Linearity ±0.10 %/FS or less
Zero point offset 0.05 V or less
Connector BNC (female)
Torque frequency output Output format Line driver output 10 kHz ±5 kHz
Connector R03-RB12F
Rotational speed pulse output Output item Hall IC pulse output on which waveform shaping is processed
Output format Open collector output with pull-up to +5 V by 330 Ω resistor
Minimum allowable load 10 kΩ
Connector R03-RB5F
Interface section
 
Torque zero input Input item Torque zero correction value acquisition start
Contact input; Makes a torque at no-load zero automatically through external contact.
Input signal No-voltage contact input Open voltage: 5.25 V or less Short-circuit current: 1 mA or less
Connector R03-RB5F
READY output Output item Contact output: Contact closes in the torque measurement state.
Output format Photo MOS relay
Load voltage DC 30 V or less
Load current 100 mA or less
ON-resistance 10 Ω or less
Connector R03-RB5F
General specifications
 
  RH-1105 RH-1205
Power supply voltage DC 24 V (8-30 V)
Power consumption 20 W or less
Power input connector R03-RB12F
Operating temperature range 0~+50 °C *1
Operating humidity range 20 to 85 %, no dew condensation*1*2
Storage temperature range -10~+60 °C *1
Storage humidity range 20 to 85 %, no dew condensation*1*2
CE marking
Low Voltage Directive (LDV) 22014/35/EU standard EN61010-1
EMC Directive 2014/30/EU standard EN61326-1 Class A Group 1
RoHS Directive 22011/ 65/ EU standard EN50581, *Four substances added by (EU) 2015/ 863
FCC FCC Part 15 Subpart B Class A
ICES ICES-003 Issue6 + Amendment1 ClassA
Safety IEC61010-1: Overvoltage category I, grounding protection class III, contamination level 2
Torsional rigidity (design value) 10 N·m : 3.6 kN·m/rad
20 N·m : 6.9 kN·m/rad
Inertia moment (design value) 10 N·m : 24.3×10-6 kg·m2 20 N·m : 24.6×10-6 kg·m2
Allowable rotational speed (standard) 16,000 r/min
Allowable rotational speed (with optional RH-0502 dynamic balance adjusted) 20,000 r/min
Supplied items Instruction 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

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