US Digital

ED2 Advanced Digital Encoder Display

Overview

  • Large 0.5" high digits, LCD with blue backlight
  • Bidirectional count or rate display
  • Count speeds up to 2MHz (300KHz in quadrature mode)
  • Two independently updated display registers
  • Programmable scale factors
  • Programmable decimal point
  • Displays both incremental and US Digital's absolute encoders
  • Quadrature sensing (Up to 4 times resolution)
  • Digital filtering of quadrature signals
  • Can be configured by a Windows PC

The ED2 can display the count/position data for up to two incremental...

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Product Specifications

The ED2 has a hardware counter chip which is capable of high speed counting, and can monitor both ports simultaneously. The ED2 also has a microprocessor which can read the counter chip or communicate serially to absolute encoders to query them for their current positions. After the ED2 has obtained a raw count, depending upon how the ED2 was configured, it takes the raw count and multiplies it by a user configurable scale factor. The ED2 has two display registers. This means that it can keep track of two encoders at once. The user toggles between these display registers to select which encoder channel is currently displayed on the LCD. If the user does not need or want more than one display, this can be disabled when the user configures the unit.

The count display is set to the preset value when the user presses the preset button. If an external reset signal is encountered the ED2 will display its minimum value, not its preset value. The preset value is entered by the user during unit configuration.

Programming the ED2 is done through a PC running Windows 95/98/NT. The windows ED2 configuration program, ED2CONF, is run on a PC which is connected to the SEI Port of the ED2 through a US Digital AD2B or SEI-USB adapter.

Although the unit has been programmed at the factory, the parameters may be changed to meet the users specific requirements. To configure the ED2, connect a cord from the SEI adapter to the SEI Port of the ED2, and flip the selector switch on the back of the unit to SLAVE.

Then start the ED2CONF program on the PC, making sure it is set up to communicate with the same COM port to which the SEI adapter is connected. ED2CONF allows the user to configure the ED2 using easy point and click menus. Configurations can be saved to disk on the PC, so that commonly used configurations can be quickly downloaded into the ED2.

This is a very flexible unit that allows the firmware to be downloaded in the field. For other personalities, functions, or controller operations, please contact technical support.

ParameterMin.Max.
Number of Incremental Encoders Tracked 0 2
Number of Absolute Encoders Tracked 0 2
Resolution of Absolute Encoder 2 32767
Number of Digits Displayed 0 8
Digits to Right of Decimal Point 0 6
User-programmable TTL Outputs 0 2

Included Accessories

PS-12 Power supply

Configuration Software

SEI Explorer

Optional Accessories

AD2B

SEI-USB

Product Description

The ED2 can display the count/position data for up to two incremental encoders or one absolute encoder and one incremental encoder. The ED2 has two display registers and one display LCD which gives it the ability to simultaneously keep track of two separate encoder channels. A button on the front of the ED2 allows the user to select which register to display. This device can also be used as a remote display, displaying values sent from a PC via a serial link. The ED2 can be powered from a power supply, or can draw its power from the US Digital SEI bus.

The unit is constructed of a lightweight, high impact plastic case with a clear viewing window. The ED2 offers 8 large 0.5 inch high digits with blue backlighting. When properly installed, the front panel is sealed for wash-down and dusty environments.

By default, the ED2 is configured to display two 360 CPR incremental encoders. Different resolutions, advanced functions and interfacing to a computer are achieved using either the AD2B or SEI-USB.

Product Notes
  • Cables and connectors are not included and must be ordered separately.
  • US Digital warrants its products against defects in materials and workmanship for two years. See complete warranty for details.
Related Documentation

Purchasing

Configure and Purchase

Product Part Number
Quantity Price
1 $235.50
10 $209.95
50 $197.92
100 $187.18
Over 100 Call for quote
Quantity
Unit Price

$235.50

Subtotal

$235.50

For your convenience, use the above part number to order via phone 800.736.0194

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