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ED4 Digital Encoder Display

ED3 S Webproduct 01 Product Photo

ED4 Features

  • Color graphics LCD display with capacitive touchscreen and backlight
  • Two 32-bit quadrature input channels. Configurable as single ended or differential. Quadrature inputs are 28V tolerant
  • Two analog encoder inputs (shared with single-ended quadrature connector)
  • Twp PWM encoder inputs (shared with either single or differential encoder connectors). Up to 12-bit resolution
  • Multiple user configurable features such as setpoints and scale factor
  • Digital I/O port with 2 open-drain digital outputs and 2 digital inputs. I/O pins are 28V tolerant
  • 3.75 MHz maximum A/B frequency
  • USB 2.0 interface for parameter download/upload and firmware updates
  • Easy configuration using USD Digital Device Explorer software
  • Accepts power supply voltages from +7.5 to +28V or USB bus power

See more info below

Configure the ED4

CE Marking: Starting July 22nd, 2014, some US Digital products will contain the CE Marking. The ED4 will not contain a CE Marking and will not be available for shipping to CE Mark required countries (for example, all countries within the European Union (EU)). See the Product Change Notification PCN 4464 for more information, or contact a US Digital representative at sales@usdigital.com.

ED4 Product Description

Restriction of Hazardous Substances

The ED4 is the next generation of US Digital's ED3 display device. The ED4 can display the data output from quadrature, analog and PWM encoder devices in a format meaningful for a customer’s application.

The ED4 can display:

  • Rotation speed or position of a quadrature output incremental encoder (single ended or differential)
  • Absolute position of a PWM output encoder
  • Absolute position of an Analog output encoder
  • Digital pulse counts or pulse rate gated with a direction control
  • Programmable alarm conditions based on the encoder output values

The user configures the ED4 over USB 2.0 using a GUI running on a PC.  The software allows the user to customize the display features for a specific application. A programmable scale factor and unit labels can be applied so the ED4 displays the output count or speed in different units such as inches, meters/sec, degrees, etc. The ED4 stores its programmable parameters in non-volatile flash memory. 

The ED4 can be USB bus powered or by an external DC power supply. A 12VDC power supply (PS-12) that plugs directly into a 120VAC receptacle is included with the display.

Product Specifications

APPLICATIONS

  • Quadrature Counter, Tachometer
  • Quadrature encoder CPR tester
  • Up/Down Pulse Counter, Frequency Counter
  • Position or velocity display
  • Distance display
  • Digital level display
  • Speed zone alarm indicator
  • Programmable tilt switch

ENVIRONMENTAL

PARAMETER MIN. MAX. UNITS
Operating Temperature 0 70 C
Electrostatic Discharge, IEC 61000-4-2 ± 8   kV

OPERATIONAL PARAMETERS

PARAMETER MIN. MAX.
Encoder Name String Length   14 chars
Encoder Units String Length   9 chars
Encoder Value Display Range (including decimal fraction)   10 digits
Encoder Value Decimal Resolution 0 6 digits
Quadrature Count Range -2^31 2^31 - 1
Scale Factor Range (including decimal fraction)   10 digits
Offset Range (including decimal fraction)   10 digits

ELECTRICAL

PARAMETER MIN. TYP. MAX. UNITS
Supply Voltage, external (1) 7.5 12 28 V
Supply Current (2)
   50% Backlight
   100% Backlight
26
31
50
60
73
93
mA
mA
Encoder Supply Voltage Output (3) 4.75 5.0 5.25 V
Encoder Supply Current (each output)   150   mA
Digital Input Voltage 0   28 V
Digital Input Logic Low     0.4 V
Digital Input Logic High 2.3     V
Open-drain Output Voltage Range (4) 0   28 V
Open-drain Output Current     1 A
Open-drain FET resistance @ 1A   0.06   Ohms
Quadrature Encoder A/B or Step/Dir Frequency 0   3.75 MHz
Quadrature Speed Measurement Range (x4) 0.5   320k Counts/Sec
Quadrature Speed Measurement Sample Period    0.1 2 Seconds 
Speed Measurement Error   < 0.1%    
Moving Average Speed Filter 0   15 Samples
Analog Encoder Input Voltage 0    5  V 
Analog Encoder A/D resolution   12   bits
Analog Encoder Sample Rate   500   kHz
Anlog Encoder Source Impedance     50 Ohms
PWM Encoder Resolution (5)   14   bits
PWM Period 0.275    4.35 Milliseconds
PWM Encoder Input Voltage 0   28 V
Encoder Single-ended Interface
   Logic Low 
   Logic High
0.0
2.3



0.4
28
V
V
Encoder Differential Interface
   Minimum Differential Voltage
   Common Mode Voltage
   Input Voltage Range 
200
0
0 



30
30 
mV
V
V 

(1) The ED4 can also be USB bus powered. An external supply is not needed in this case. If both USB and external power is connected, external power is used.

(2) Does not include current drawn by an external encoder.

(3) In Default mode, the 5V nominal encoder supply is generated from the 7-28V power supply voltage. In USB bus powered mode, the 5V nominal USB voltage powers the encoders directly. In HV Mode, the encoders are powered from the power supply voltage input. 

(4) An external clamp diode should be used when switching inductive loads.

(5) PWM duty cycle is measured once per cycle

OPERATING MODE

The ED4 is configured over a USB 2.0 interface using an easy-to-use PC application.The ED4 can display two encoder channels on its color LCD display. Quadrature, Analog and PWM encoder outputs are supported. The encoder reading can be scaled and offset so the reading is in arbitrary units. The unit name text can also be displayed he ED4 firmware is field upgradeable by the user over USB.

The ED4 has a capacitive touch screen for the user to interact withe the display. The following buttons are supported.

  • Display Button : displays a submenu to increase/decrease backlight brightness, turn off backlight until screen touch
  • Offset - displays a submenu to set or clear Encoder Channel 1 or 2
  • More - displays a submenu to show serial number and firmware version

 

 

FACTORY DEFAULT CONFIGURATION

·         I/O Alarms disabled

·         Display Alarms disabled

·         Quadrature Mode: Encoder 1 and Encoder 2 – single ended, X1 mode

·         Quadrature positive count, reset on index

·         Encoder #1 Name = “Encoder 1:”

·         Encoder #2 Name = “Encoder 2:”

·         Encoder #1 Units = “ct”

·         Encoder #2 Units = “ct”

·        Display Decimal Precision = 0

·        Scale factor = 1

·         Offset = 0

·         Display Limits disabled

·         LCD Backlight Level = 50%

INPUT CIRCUIT

SINGLE-ENDED:

DIFFERENTIAL:

PANEL MOUNTING INSTRUCTIONS

  1. Remove the rear cover by removing the four screws in the back.
  2. Insert the display through the rectangular opening in the front panel so that the gasket seals against the front.
  3. Reassemble the rear cover to secure the display into the front panel.
  4. The recommended mounting screw torque is TBD oz-in

CONNECTOR PINOUTS

Encoder Channel 1/2 Connectors

PIN 5-PIN Analog 5-PIN PWM 5-PIN SINGLE-ENDED 10-PIN DIFFERENTIAL
1 Ground Ground Ground Ground
2 NC NC Index Ground
3 Analog PWM A channel Index-
4 +5V out +5V out DC power out (1) Index+
5 NC NC B channel A- channel
6       A+ channel
7       DC power out (1)
8       DC power out (1)
9       B- channel
10       B+ channel

(1) External DC power is output in HV mode, +5V out in standard mode

 

Alarm Connector

 

PIN DESCRIPTION
1 External DC Power Input (7.5-28V)
2 GND
3 Channel 1 Quadrature Capture Input (Falling Edge)
4 Channel 2 Quadrature Capture Input (Falling Edge)
5 Channel 1 Alarm Output (Open Drain)
6 Channel 2 Alarm Output (Open Drain)

INCLUDED ACCESSORIES

PS-12 Power Supply

Additional Information

Product Notes

  • US Digital® warrants its products against defects in materials and workmanship for two years. See complete warranty for details.

Datasheets

User Guides

Related

Product Configurator

For pricing, this product requires configuration.

Begin by completing either Option 1 or 2 below. Questions? Contact our support team.

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