RH Wheeled Encoder
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RH Encoder

Shown with measuring wheels and Y-1

Standard Resolution Models

Description (144k)

Specifications (65k)

Dimensions

 

High Resolution Models

RH-1800/3600 Specifications (78k)

Contact us for information about
other high resolution models.

 

See also RH-P Programmable

PPI For Conveyor or Web Applications

The RH encoder, also known as a Pulse Position Indicator (PPI), generates tracking pulses for web applications, and in particular for material handling sortation applications when used with barcode laser scanners or CCD vision systems. It typically is equipped with two 12 inch or 30 centimeter circumference measuring wheels that ride directly on the conveyor belt or web, eliminating any slippage problems typically encountered with shaft encoders. With its double wheel construction, the encoder is self-aligning when allowed to pivot freely from its integral arm. The encoder’s weight is sufficient to maintain contact when mounted above the moving material. Special mounting accessories are also available for mounting the encoder from below.

For High Resolution Applications the RH-1800/3600 encoder generates both 1800 and 3600 pulses per revolution, making it suitable for high resolution printing and CCD scanner applications. When used with precision 12” circumference measuring wheels (MW-1-B) it generates 150 and 300 pulses per inch of linear movement. Please inquire about other similar models.

Model Number

RH output type - pulses per revolution anti-jitter / supply voltage output circuit modification   accessories
 

Single pulse output on A is standard

Q Quadrature A and B outputs
Z= Outputs A and Z
QZ= Outputs A, B and Z
  1

to

1200

AJ = anti-jitter option

 

(single output only)

  5, 5R

12, 12R

15

24

8-30

120AC

current sinking is standard

C= open collector
D= differential line driver
P= current sourcing
T= Triac
Optional modification number

(see modified versions table below)

  10' (3m) cable is standard

For other accessory options, see the accessories table below

High resolution models:

      1800 / 3600     5

8-30

push/pull is standard

C= open collector

 

Example: RH - 24AJ / 12C   MW1 - Y1 - 20 Example: RHQZ - 600 / 5  M101   MW30 - 6M
bulletRH pulse position indicator
bulletsingle pulse output
bullet24 pulses per revolution
bulletAnti-jitter feature
bulletoperates on 12 vdc
bulletopen collector output circuit
bulletAccessories: MW-1-B wheels, Y-1 yoke, and 20' cable

 

bulletRH wheeled encoder
bulletquadrature and index (A, B, and Z) pulse outputs
bullet600 pulses per revolution on A and B outputs
bulletoperates on 5 vdc
bulletcurrent sinking output circuit
bulletM101 modification (see table below)
bulletAccessories: MW-30-B wheels, 6 meter cable

 

Example: RH - 6AJ / 120ACT -10 Example: RH - 1800 / 3600 / 8-30  M139   MW1-UB1-10
bulletRH pulse position indicator
bulletsingle pulse output
bullet6 pulses per revolution
bulletAnti-jitter feature
bulletoperates on 120 vac
bullettriac output circuit
bulletAccessories: 10' cable
bulletRH pulse position indicator
bulletdual pulse output
bullet1800 pulses per revolution on output A
3600 pulses per revolution on output B
bulletoperates on 8-30 vdc
bulletpush/pull output circuit
bulletM139 option: Enhanced anti-jitter (see table below)
bulletAccessories: MW-1-B wheels, MB-UB1 mounting, 10' cable

Note: Not all features are listed. Some combinations are mutually exclusive.

Standard Features and Options

bullet

Other output types: direction, minimum speed detector, dual, or triple

bullet

Shaft: 3/8" diameter X .8" length, double ended

bullet

Short-Circuit, ESD, and Surge protection are available

bullet

CE Marked (specific models only)

 

 

Accessories

Summary Datasheet (48k)

Top of Page

Measuring Wheels - Mounting - Cables
MW1 = MW-1-B wheels

MW30 = MW-30-B wheels

MW1R = MW-1R-B wheels

MW30R = MW-30R-B wheels

MW1W = Wide MW-1 wheels

MW30W = Wide MW-30 wheels

  Y1 = Y-1 yoke assembly

Y2A = Y-2A yoke assembly

Y3 = Y-3 yoke assembly

UB1 = MB-UB1 under-belt counterweight

UB1A = MB-UB1A counterweight with dual weights

UB2 = MB-UB2 Offset Mounting

UB3 = MB-UB3 under-belt spring assembly

UB4 = MB-UB4 under-belt spring assembly

  10 = connector with 10' of cable

20 = connector with 20' of cable

3M = connector with 3m of cable

6M = connector with 6m of cable

(any length cable in feet or meters)

 

 

Modified Versions

Top of Page

Modification Description  
IW Independent wheels for curved conveyors Datasheet (127k)
M94 Modified connector wiring, ECCI PU820 12/5 compatible Datasheet (17k)
M101 Encoder with DIN connector (not recommended for new designs) Datasheet (20k)
M119 4469 line driver outputs Datasheet (29k)
M126 1.8" shaft length (each side)  Datasheet (17k)
M129 Encoder with 2 independent, single output circuits Datasheet (24k)
M130 Encoder cable with pre-wired 4-pin connector on other end to scanner Datasheet (27k)
M131 Encoder with 4-pin Micro-Change connector Datasheet (33k)
M139 Enhanced Anti-Jitter feature Datasheet (45k)
M140 Minimum speed detector output Datasheet (40k)
M142 Enhanced Anti-Jitter feature and Turck PSG 4M-2/S90-S618 Datasheet (29k)
M148 Specially constructed cable with 3-pin connector for high noise immunity Datasheet (39k)
M197 RH encoder with 10 ft. / 3 meter permanently attached cable Datasheet (33k)

 

Custom models available

 

 

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Copyright © 2008 Photocraft Inc
Last modified: May 12, 2008