An incremental encoder that uses precision measuring wheels to directly measure the movement of a conveyor belt, or to accurately measure moving material.
Wheeled encoders more accurately track the conveyor belt or other material than shaft encoders. Two problems with shaft encoders in this application are: (1) slippage of the conveyor belt on the roller, and (2) inaccuracy of roller diameters. Both of these contribute to inaccuracies that reduce the overall efficiency of a material handling sortation system or precision measuring system. Wheeled encoders ride directly on the moving material, use a wheel tread having a high coefficient of friction, and have a very low starting torque resulting in virtually no slippage of the wheels on the belt. In addition, the wheels are precision ground with exacting tolerances, versus a roller which has a much larger tolerance and its circumference seldom translates into an integral number of encoder pulses per unit of linear movement.
R21 - Compact size and Rugged Construction
The model R21 is an optical shaft encoder in a 2" diameter x 1-7/8" (Ø51mm x 48mm) housing with an integral mounting arm, compatible with a variety of mounting accessories for installation either above or below a moving web or conveyor. When used with the MW-8 (8.00" circumference) or MW-20 (20.00cm circumference) measuring wheel it can accurately track the web or conveyor to within ±.007" or ±.016cm per revolution. This is not a light duty encoder - it was built with heavy duty bearings and solid construction for reliable, long-term operation in continuous duty applications.
Standard Features and Options:
· Generates pulses for accurate linear measurement
· Heavy Duty construction
· Compact size
· Precision 8" or 20cm circumference measuring wheel
· 16mm or M12 connector, or attached cable
· "Anti-Jitter" and other material handling features
· ESD, Short Circuit, Reverse Voltage protection
· Various mounting hardware kits are available
Popular Models:
- R21-1000/8-30C
- R21-16AJ/8-30S3
- R21QZ-1024/5DS
R21-P - Compact size, Rugged Construction, User Selectable Parameters
The model R21 is an optical shaft encoder in a 2" diameter x 1-7/8" (Ø51mm x 48mm) housing with an integral mounting arm, compatible with a variety of mounting accessories for installation either above or below a moving web or conveyor. When used with the MW-8 (8.00" circumference) or MW-20 (20.00cm circumference) measuring wheel it can accurately track the web or conveyor to within ±.007" or ±.016cm per revolution. This is not a light duty encoder - it was built with heavy duty bearings and solid construction for reliable, long-term operation in continuous duty applications. During installation various features, such as the number of pulses per revolution, can be selected by setting configuration switches. The available features depend on the encoder model.
Standard Features and Options:
· Double ended shaft and integral mounting arm
· Unbreakable code disk
· Various programmable features
· Attached cable or optional connector
· Heavy duty bearings
· Short circuit and ESD protected
Popular Models:
R22 - Compact size and Rugged Construction
The model R22 is an optical shaft encoder in a 2" diameter x 1-7/8" (Ø51mm x 48mm) housing with an integral mounting arm, compatible with a variety of mounting accessories for installation either above or below a moving web or conveyor. When used with the MW-8 (8.00" circumference) or MW-20 (20.00cm circumference) measuring wheels it can accurately track the web or conveyor to within ±.007" or ±.016cm per revolution. This is not a light duty encoder - it was built with heavy duty bearings and solid construction for reliable, long-term operation in continuous duty applications.
Standard Features and Options:
· double ended shaft and integral mounting arm
· Unbreakable code disk
· Up to 1200 pulses per revolution
· Attached cable or optional connector
· Heavy duty bearings
Popular Models:
- R22-1000/5DS M233
- R22-1200/5 M189
- R22Q-1000/8-30S3
- R22Q-1200/5DS M233
- R22Q-1200/5DS
- R22Q-1500/8-30S3
- R22Q-800/8-30S M203
- R22QZ-1200/5-26DHS
- R22QZ-1200/5DLS
R22-P - Compact size, Rugged Construction, User Selectable Parameters
The model R22 is an optical shaft encoder in a 2" diameter x 1-7/8" (Ø51mm x 48mm) housing with an integral mounting arm, compatible with a variety of mounting accessories for installation either above or below a moving web or conveyor. When used with the MW-8 (8.00" circumference) or MW-20 (20.00cm circumference) measuring wheels it can accurately track the web or conveyor to within ±.007" or ±.016cm per revolution. This is not a light duty encoder - it was built with heavy duty bearings and solid construction for reliable, long-term operation in continuous duty applications. During installation various features, such as the number of pulses per revolution, can be selected by setting configuration switches. The available features depend on the encoder model (see Currently Available Programs table)
Standard Features and Options:
· Double ended shaft and integral mounting arm
· Unbreakable code disk
· Various programmable features
· Attached cable or optional connector
· Heavy duty bearings
Popular Models:
- R22-P1200QB/5-26DHS
- R22-P1200QR/5DLS
- R22-P64AJ/8-30S
RH - For precise Linear Measuring 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.
Standard Features and Options:
· Generates pulses for accurate linear measurements
· Tracks conveyor movement independent of conveyor roller diameters
· Heavy duty construction
· Precision 12" or 30cm circumference measuring wheels
· Programmable model available - see Model RH-P
· Exclusive "Anti-jitter" circuit for conveyor applications
· Single (A), quadrature (A, B), and index (Z) outputs.
· Short circuit, ESD, reverse voltage protection
Popular Models:
- RH-10AJ/120ACT
- RH-12/12
- RH-12/12P
- RH-1200/8-30NP
- RH-12AJ/12
- RH-12AJ/24P
- RH-12AJ/8-30
- RH-192/12C
- RH-192/12C M148
- RH-192AJ/8-30P M131
- RH-1AJ/120ACT
- RH-2/24P
- RH-24/8-30C
- RH-240AJ/8-30C,120AJ/8-30C M154
- RH-24AJ/12C
- RH-2AJ/120ACT
- RH-2AJ/24P
- RH-2AJ/8-30P
- RH-300/5
- RH-3600/8-30
- RH-3AJ/120ACT
- RH-3AJ/24C
- RH-3AJ/24P
- RH-4/24P
- RH-4AJ/120ACT
- RH-4AJ/24
- RH-4AJ/24P
- RH-6/24P
- RH-600/8-30
- RH-600AJ/5-26P
- RH-6AJ/12
- RH-6AJ/120ACT
- RH-6AJ/24
- RH-6AJ/24P
- RH-6AJ/8-30
- RH-8AJ/24C IW
- RHQ-100/24P
- RHQ-1000/24C
- RHQ-1000/24P
- RHQ-1024/5D
- RHQ-1200/24P M131
- RHQ-1200/5 -30
- RHQ-1200/8-30NP
- RHQ-256/8-30D
- RHQ-360/15C
- RHQ-50/24
- RHQ-50/24RD
- RHQ-600/5D
- RHQ-72/5
RH-P - User Selectable Pulses per Revolution
The RH-P 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. The number of pulses per each revolution of the wheel is selectable by setting configuration switches. 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.
Standard Features and Options:
· Progammable via DIP switches at installation time
· User selectable pulses per revolution
· User Selectable Output: Current sinking (NPN), Current sourcing (PNP), NPN or open collector, or Push/Pull Output
· Exclusive "anti-jitter" circuit
· Shourt-circuit and ESD Protection
· 5 vdc, or 8 to 30 vdc Supply voltages
· Mounts either above or below a web, conveyor belt, or roller
· Optional 12 inch or 30 cm. circumference measuring wheels
Popular Models:
- RH-P144AJ/8-30 IW
- RH-P144AJ/8-30 M126
- RH-P144AJ/8-30 M131
- RH-P144AJ/8-30
- RH-P144AJ/8-30 RC M202
- RH-P1500AJB/8-30 M131
- RH-P1500AJB/8-30
- RH-P1500QB/8-30 M218
- RH-P1500QB/8-30
- RH-P192/8-30 M196
- RH-P240AJ/8-30
- RH-P240AJ/8-30 IW
- RH-P240AJ/8-30 M131
- RH-P240AJ/8-30 M148
- RH-P240AJ/8-30
- RH-P240AJ/8-30 RC
- RH-P240Q/8-30
- RH-P300AJQ/8-30C
- RH-P600AJB/8-30
- RH-P600AJB/8-30C
- RH-P600AJB/8-30NP M131 RC
- RH-P600AJB/8-30NP RC
- RH-P64AJ/8-30 IW M131
- RH-P64Q/5
- RH-P64Q/8-30
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