U. S. Digital
US Digital designs and manufactures motion control products for OEM manufacturers as well as end users. Motion control building blocks include absolute and incremental magnetic and optical encoders, inclinometers, interfaces, drives, cables, couplings and more. Application examples range from motors, solar and renewable energy to medical, industrial automation, robotics and textiles.
- 800.736.0194
360.260.2468 - info@usdigital.com
- 1400 NE 136th Avenue
Vancouver,, Washington 98684
United States
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Encoders
Wherever precision in motion is of the essence, an encoder is likely to be found. Indeed, it’s hard to name an industry that does not benefit from encoder technology. It is found everywhere from mission-critical applications in the most rugged environments to routine workplace applications that demand uncompromising repeatability.
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Incremental Encoders
Incremental encoders provide a relative position with respect to a "home" or zero position. US Digital offers incremental encoders as kits ready for assembly and shaft-equipped encoders, using both optical and magnetic technologies. Also in stock and immediately available are encoder modules and encoder components such as disks and hubdisks.
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Miniature Absolute Magnetic Shaft Encoder
MA3
The MA3 is a miniature rotary absolute shaft encoder that reports the shaft position over 360 with no stops or gaps. The MA3 is available with an analog or a pulse width modulated (PWM) digital output.
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Networked Absolute Inclinometer
T7
The T7 is available in several interface and protocol options. The physical interface can be RS232, RS485 or US Digital's CAN (Controller Area Network). The protocol can be either US Digital's serial protocol or Modbus RTU. The RS232 version supports a single T7 with up to 100 ft of cable. For users that need longer cable lengths or multiple T7s on a single bus, the RS485 or US Digital CAN (Controller Area Network) version can be used. The USD-CAN protocol allows a network of up to sixty-four T7s to be connected to a single host. Power for each T7 is supplied over the CAN network cable. The host accesses the USD-CAN T7s through US Digital's low cost CANA-232/CANA-485 adapter module. This module allows the host to access each T7 on the network using simple, easy serial port commands, just like the RS232 version. The RS485 version supports up to 32 T7s on the bus.
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Transmissive Optical Encoder Module
EM2
The EM2 provides digital A & B quadrature outputs with a third output index channel. Each EM2 module is resolution specific and is matched to the resolution of a code wheel. The EM2 operates with a single 5V supply and provides single ended outputs which are capable of both sinking and sourcing 5mA. An internal 0.1 uF decoupling capacitor is designed into the EM2 to provide enhanced noise immunity.
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Transmissive Rotary Codewheel
HUBDISK-1
US Digital offers a wide variety of standard hub / disk assemblies (optical encoder disks attached to an aluminum hub) to aid with mounting on a shaft. Encoder disks may also be ordered as a stand alone item (see the Disks page). These rotary encoder disks are made from mylar polyester film. This material allows for a wide temperature range and is virtually unbreakable.
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Transmissive Rotary Codewheel
HUBDISK-2
US Digital offers a wide variety of standard hub / disk assemblies (optical encoder disks attached to an aluminum hub) to aid with mounting on a shaft. Encoder disks may also be ordered as a stand alone item (see the Disks page). These rotary encoder disks are made from mylar polyester film. This material allows for a wide temperature range and is virtually unbreakable.
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Transmissive Rotary Disk
DISK-2
US Digital offers a wide variety of standard rotary encoder disks. They may be ordered as a stand alone disk (see below) or as a codewheel (see the Disks page). These rotary encoder disks are made from mylar polyester film. This material allows for a wide temperature range and is virtually unbreakable. There is no minimum order.
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Transmissive Rotary Disk
DISK-1
US Digital offers a wide variety of standard rotary encoder disks. They may be ordered as a stand alone disk (see below) or as a codewheel (see the Disks page). These rotary encoder disks are made from mylar polyester film. This material allows for a wide temperature range and is virtually unbreakable. There is no minimum order.
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Absolute Encoders
US Digital designs and manufactures absolute encoders in both optical configurations, for the highest possible resolution and accuracy, and magnetic versions for demanding environments. In either case, absolute encoders report a shaft angle within a single 360-degree shaft rotation without stops or gaps. Unlike incremental (sometimes called "relative") encoders, absolute encoders provide true (absolute) shaft position, eliminating the need for a "home" or "zero" cycle after a supply-voltage power cycle.
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Absolute Magnetic Kit Encoder
MAE3
The MAE3 is an absolute magnetic kit encoder that provides shaft position information over 360 of rotation with no stops or gaps. This magnetic encoder is designed to easily mount to, and dismount from, an existing shaft to provide digital feedback information. The MAE3 is available with an analog or a pulse width modulated (PWM) digital output.
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Absolute Optical Encoder
A2
Product DescriptionRestriction of Hazardous SubstancesThe A2 absolute encoder is a non-contacting optical rotary position sensor which reports the shaft angle within a 360 deg. range. As opposed to incremental encoders, the A2 reports the absolute position rather than the change in position. When powered up, it does not require a home cycle, even if the shaft was rotated while the power was off. In multi-turn mode, it tracks the position in a 32-bit counter as long as the power supply is maintained. Internally, an infrared LED flashes through a circular bar code onto a linear array sensor. The microcontroller decodes the image into a unique position. All user programmable parameters such as resolution, origin, direction and mode are permanently stored in an internal EEPROM
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Absolute Optical Encoder Kit Version
A2K
The A2K absolute encoder is a non-contacting optical rotary position sensor which reports the shaft angle within a 360 deg. range. As opposed to incremental encoders, the A2K reports the absolute position rather than the change in position. When powered up, it does not require a home cycle, even if the shaft was rotated while the power was off. In multi-turn mode, it tracks the position in a 32-bit counter as long as the power supply is maintained. Internally, an infrared LED flashes through a circular bar code onto a linear array sensor. The microcontroller decodes the image into a unique position. All user programmable parameters such as resolution, origin, direction and mode are permanently stored in an internal EEPROM
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Absolute Optical Inclinometer
A2T
The A2T is a single axis, digital gravity angle sensor. The A2T serves as a full 360 range absolute tilt sensing programmable level with either digital or analog output. Internally, a rotary bar coded disk is mounted to a weighted gravity driven wheel. A micro-controller strobes an LED to transfer the bar code image onto an optical linear array, then decodes the position every 2 mSec. Magnetic damping provides fast response and settling time while virtually eliminating overshoot and oscillations. An internal EEPROM stores field programmable parameters such as resolution, zero position, direction swap, and mode. This second generation design virtually eliminates the primary accuracy limitation of first generation inclinometers, which is sitation (hysteresis).
