Photcraft Encoders

Product Details:

The RL-P rotary shaft encoder directly couples to a rotating shaft and produces a specified number of square wave output counts per revolution of the shaft. The number of counts per revolution is determined by setting configuration switches accessible through an access port near the connector. Any one of a predefined set of counts per revolution are available.

It comes with a 3/8″, 1/2″, or 5/8″ shaft for heavy duty applications where a face mounted encoder is required. The rugged 3″ diameter by 2-3/8″ deep enclosure is constructed of 1/4″ thick aluminum with a 5 or 6 pin connector on the side.

When coupled to a rotating shaft, either directly with a flexible coupling or using a timing belt, it converts shaft rotation into square wave outputs.

The number and types of outputs are based on an integrated micro-controller and a factory installed program. Various programs were developed to meet the specific needs of different applications. Many programs offer installation time options that are configured using DIP switches located near the connector.

The following are examples of existing program outputs and features:

• User selectable counts per revolution (cpr)
• User selectable output circuit
• 2 or 3 pulse outputs with differing counts per revolution
• User selectable quadrature outputs
• Anti-jitter and enhanced anti-jitter features
• Direction indicator
• Minimum speed detector
• Fractional counts per revolution, such as 2.5 cpr
• Multiplier that increases the maximum cpr

Call or visit our website for details about currently available programs, and to inquire about new features to meet your specific application needs.

Features:

• Heavy duty bearings
• 3/8″, 1/2″ & 5/8″ shaft diameters
• DIP switches to configure options at installation time
• Exclusive “Anti-Jitter” option
• User selectable CPR & output circuit
• Made in the USA

 

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Product Details:

The Model RL rotary shaft encoder is sold with an option of several different sized diameter shafts and bearings and was designed for heavy duty applications where a rugged, face mounted encoder is required. When coupled to a rotating shaft, either directly or using a timing belt, it converts shaft rotation into square wave outputs with the specified number of counts per revolution providing an accurate means of digitizing position, rate or direction of rotation.

Output pulses are generated when a shatter-proof optical disk internally mounted on the encoder shaft and having the specified output pattern is read by 1, 2, or 3 opto-sensors depending on the number of outputs required. The matched LED and opto-sensor pairs, compensation circuitry and rugged aluminum housing assure continuous, reliable operation in industrial environments over a 0°
to 70°
C temperature range.

Resolutions from 1 to 1344 counts per revolution are available in single output, quadrature output, and with optional zero reference (index output). We also produce many customized models having 1, 2 or 3 independent outputs with any combination of counts per revolution (up to 360) on each output (call for information).

The “Anti-Jitter” option was designed for conveyor and web applications that require continuous and accurate measurement of the web’s movement even if the system must be stopped and restarted without reset. “Anti-Jitter” eliminates the effects of mechanical vibration and the possible dither that results in false output pulses and subsequent erroneous counts when the system is actually “stopped”. It also eliminates the need for more expensive quadrature encoders and up-down counters. “Anti-jitter” is available on single output models.

Accessories and customized configurations are available including speed and direction of rotation indication, measuring wheels, special shafts, mounting brackets, and flexible couplings.

Features:

• Heavy duty bearings
• 3/8″, 1/2″, 5/8″ & metric shaft diameters
• Exclusive anti-jitter and enhanced anti-jitter option
• DC or AC supply voltages
• 1 to 1344 counts per revolution
• Made in the USA

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Product Details:

The BlueCoder model RBL is an optical incremental encoder that use the benefits of blue LED light. It is housed in a 3″ diameter x 2-3/8 long ultra rugged enclosure. Multiple face mounting options are available. The MS circular electrical connector is either 5-pin, 6-pin or 10-pin depending on model.

Features:

• Heavy duty bearings
• High-Definition blue-light phased array technology
• Compensated blue-light source
• Unbreakable code disk
• IP50 environmental seal
• Made in the USA

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Product Details:

The model RJ optical shaft encoder features rugged construction and flexible mechanical configurations making it ideally suited for many industrial shop-floor environments.

The model RJ converts shaft rotation into square wave output pulses to provide an accurate means of digitizing position, rate or direction of rotation.

Output pulses are generated when a shatter-proof optical disk internally mounted on the encoder shaft and having the specified output pattern is read by 1, 2, or 3 opto-sensors depending on the number of outputs required. The matched LED and opto-sensor pairs, compensation circuitry and rugged aluminum housing assure continuous, reliable operation in industrial environments over a 0° to 70° C temperature range.

The electrical outputs are designed to be compatible with most instruments, electronic counters, PLC’s and other similar industrial motion control devices. Optional differential line driver outputs allow for longer cable runs (hundreds of feet) and higher electrical noise immunity.

The model RJ is designed with 3/8″ bearings and shaft, seals at the shaft, heavy duty aluminum enclosure with environmental seals, and sealed circular connector.

Resolutions from 1 to 1200 counts per revolution are available in single output, dual output (quadrature), and with optional zero reference (index output). We also produces many customized models having 1, 2 or 3 independent outputs with any combination of counts per revolution (up to 360) on each output (call for information).

A variety of accessories and customized configurations are available including 1 foot or 30 cm. circumference measuring wheels, mounting adapters (including a 2-1/2 square flange), special shaft lengths and diameters, and flexible couplings.

Features:

• Size 22.5 housing
• Environmentally sealed
• Resolutions up to 2400 CPR
• Single, quadrature, and index outputs
• Made in the USA

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Product Details:

The model RG optical shaft encoder features rugged construction and flexible mechanical configurations making it ideally suited for many industrial shop-floor environments. Output pulses are generated when a shatter-proof optical disk internally mounted on the encoder shaft and having the specified output pattern is read by 1, 2, or 3 opto-sensors depending on the number of outputs required. The matched LED and opto-sensor pairs, compensation circuitry and rugged aluminum housing assure continuous, reliable operation in industrial environments over a 0° to 70° C temperature range.

The electrical outputs are designed to be compatible with most instruments, electronic counters, PLC’s and other similar industrial motion control devices. Optional differential line driver outputs allow for longer cable runs (hundreds of feet) and higher electrical noise immunity.

Features:

• Size 22.5 housing
• Resolutions up to 2400 CPR
• Dual or triple output models with any combination of CPR on each output
• 120 VAC supply voltage option
• Various mounting adapters and custom shafts
• Made in the USA

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Product Details:

The model R20 is an optical shaft encoder in a 2″ diameter x 1-3/4″ long housing that can be face mounted using three 6-32 x .25″ deep mounting holes on a 1.75″ diameter bolt circle. The shaft is up to 3/8″ diameter, either single or double ended. Electrical connection is through a 16mm circular connector or an attached cable.

Features:

• Shaft size from 0.250″ to 0.375″
• Metric shaft size from 4mm to 8mm
• Unbreakable code disk
• Servo ring and face mount options
• Enhanced anti-jitter option
• Made in the USA

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Product Details:

The BlueCoder model RB20 is an optical incremental encoder that use the benefits of blue LED light. It is housed in a 2″ diameter x 1-3/4″ long enclosure that can be face mounted using three 6-32 x .25″ deep mounting holes on a 1.75″ diameter bolt circle. Short wavelength light, such as blue-light is less diffraction as it interacts with the slots of a code disk. The shorter wavelength light can be taken advantage of by using modern semiconductor processes with small shallow structures. Coupled with the long term temperature-stable modern blue LEDs the result are improved resolution, accuracy and stability.

Features:

• High-Definition blue-light phased array technology
• Compensated blue-light source
• Wide operating voltage 4.5Vdc – 30Vdc
• High resolution up 10,000 CPR
• Unbreakable code disk
• Low lag time. Excellent for motor regulation
• Shaft size from 0.250″ to 0.375″ & 4mm to 8mm
• Servo ring and face mount options
• IP65 environmental seal
• Made in the USA

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Product Details:

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 counts per each revolution of the wheel is selectable by setting configuration switches. 12″ or 30cm circumference measuring wheels ride directly on the conveyor belt or web eliminating any slippage problems typicaly 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. For mounting below the belt use MB-UB1 underbelt mounting accessory.

The encoder generates up to 3 square wave outputs depending on factory installed program and options. DIP switch positons set at installation time configure the encoder according to the facotry installed program. See “Currently Available Programs”

The types of outputs based on shaft rotation are as follows:

Pulse Output: A Single output (A) with a specific number of counts per revolution (cpr) of the shaft; Dual outputs (A and B) with two independent outputs and the cpr on A can be different than the cpr on B; or Triple outputs (A, B, and C) with three independent outputs.

Quadrature: Two pulse outputs, A and B, have the same cpr and are in quadrature relation to each other (A leads B by 90
for clockwise rotation as viewed from shaft end farthest from connector). Indicates distance and direction to any control device that accepts quadrature inputs.

Zero Marker Output: Zero reference or index pulse on output Z occurring once per revolution.

Direction Output: Indicates the direction of shaft rotation.

Minimum Speed Output: Indicates when the shaft exceeds a predetermined revolutions per minute (rpm).

Anti-Jitter feature: Designed for conveyor and web systems requiring continuous and accurate measurement of the web’s movement even if the system must be stopped and restarted without reset. When the web stops, and if there is sufficient vibration or back-and-forth movement, then the encoder output could oscillate, appearing as if the web were actually moving. Anti-jitter eliminates this condition by significantly increasing the pulse hysteresis.

Call or visit our website for details about currently available programs, and to inquire about new features to meet your specific application needs.

Features:

• User selectable counts per revolution
• Exclusive “Anti-Jitter” circuit
• Mounts either above or below a web, conveyor belt, or roller
• Self-aligning
• 12″ or 30 cm. circumference measuring wheels
• Fully interchangeable with model RH
• Made in the USA

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Product Details:

The Model 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 bar code laser scanners or CCD vision systems. 12″ or 30cm circumference measuring wheels 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. For mounting below the belt use MB-UB1 under belt mounting accessory.

Shaft rotation is converted into square wave output pulses to provide an accurate means of digitizing position, rate or direction of rotation. A shatter-proof optical disk attached to the encoder shaft interrupts an infrared light beam and photo sensor. Internal wave shaping circuitry provides a square wave output that is compatible with all popular counters and digital tachometers. When used with measuring wheels it can accurately measure inches, feet, centimeters, inches/min., feet/min., and many others.

Configurations consist of: unidirectional that produces a single output (output A) with the specified number of counts per revolution regardless of which direction the shaft is rotating; and quadrature that produces 2 outputs (A and B) for indicating amount and direction of shaft rotation. Both are also available with optional index output (output Z).

The Anti-Jitter option was designed for conveyor and web systems that require continuous and accurate measurement of the web’s movement even if the system must be stopped and restarted without reset. “Anti-Jitter eliminates the effects of mechanical vibration and the possible dither that results in false output pulses and the subsequent erroneous counts when the system is actually “stopped”. “Anti-jitter” is available on single output models with up to 60 counts per revolution.

Features:

• Ultra heavy duty construction
• Accurate linear measurement.
• Tracks conveyor movement independent of conveyor roller diameters.
• Self-Aligning
• Exclusive “Anti-Jitter” circuit for conveyor applications
• Single (A), quadrature (A, B), and index (Z) outputs
• Made in the USA

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Product Details:

The BlueCoder model RBH is an optical incremental encoder that use the benefits of blue LED light. It is housed in a 3″ diameter x 2-3/8 long ultra rugged enclosure 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. Solid construction and heavy duty bearings make this encoder a great choice for long-term operation in continuous duty applications.

Features:

• Heavy duty bearings
• High-Definition blue-light phased array technology
• Compensated blue-light source
• High resolution up 10,000 CPR
• Unbreakable code disk
• IP50 environmental seal
• Made in the USA

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Product Details:

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.

Call or visit our website for details about currently available programs, and to inquire about new features to meet your specific application needs.

Features:

• Double ended shaft with two measuring wheels
• Integral mounting arm
• Self-aligning
• Unbreakable code disk
• Various programmable features
• Heavy duty bearings
• Made in the USA

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Product Details:

The BlueCoder model RB22 is an optical incremental encoder that use the benefits of blue LED light. It is a size 20 encoder that is a compact 2″ diameter x 1-7/8″ (Ø51mm x 48mm) long optical shaft encoder 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. Solid construction and heavy duty bearings make this encoder a great choice for long-term operation in continuous duty applications.

Solid construction and heavy duty bearings make this encoder a great choice for long-term operation in continuous duty applications.

Features:

• High-Definition blue-light phased array technology
• Compensated blue-light source
• High resolution up 10,000 CPR
• Unbreakable code disk
• IP65 environmental seal
• Integrated mounting arm
• Precision measuring wheel
• Made in the USA

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Product Details:

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.

Call or visit our website for details about currently available programs, and to inquire about new features to meet your specific application needs.

Standard Features and Options:

• Integrated mounting arm
• Economical single measuring wheel
• Unbreakable code disk
• Various programmable features
• Heavy duty bearings
• Made in the USA

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Product Details:

The BlueCoder model RB21 is an optical incremental encoder that use the benefits of blue LED light. It is a size 20 encoder that is a compact 2″ diameter x 1-7/8″ (Ø51mm x 48mm) long optical shaft encoder 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. Solid construction and heavy duty bearings make this encoder a great choice for long-term operation in continuous duty applications.

Features:

• High-Definition blue-light phased array technology
• Compensated blue-light source
• High resolution up 10,000 CPR
• Unbreakable code disk
• IP65 environmental seal
• Integrated mounting arm
• Precision measuring wheel
• Made in the USA

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Product Details:

The model R22 is a size 20 encoder that is a compact 2″ diameter x 1-7/8″ (Ø51mm x 48mm) long optical shaft encoder 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.

Solid construction and heavy duty bearings make this encoder a great choice for long-term operation in continuous duty applications.

Features:

• Accurate linear measurement
• Dual precision measuring wheels
• Compact size 20
• “Anti-Jitter” and other material handling features
• IP66 optional
• Made in the USA

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