X20DS1928

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The X20DS1928, part of B & R Automation's X20 Series, features status indicators for counting direction, operating status, and module status. This module consumes 1.3 W of internal I/O power, supports EnDat 2.1/2.2 encoder inputs, and operates with shielded cables for all signal lines. It offers differential, symmetrical signal transmission up to 400 kHz.

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Product Description:

The B & R Automation's X20DS1928 is an intelligent I/O module that belongs to X20 Series designed for industrial use. This module is especially designed for a connection with EnDat 2.1/2.2 encoder inputs. The X20DS1928 has a status indicator for counting direction, operating status and module status which gives the user a quick visual view on the status of the module and how it is performing. A feature of the X20DS1928 is that it is compatible with EnDat encoder inputs. EnDat is an electrical interface for encoders which enables feedback of high resolution position data as well as efficient data transfer. DC coupling is provided in the module which is bidirectional and functional up to a signal frequency of 400 kHz.

The design of the module makes it necessary to use shielded cables for all the signal lines to minimize the effects of electromagnetic interference or EMI and also to enhance signal quality over longer distances. It has a maximum encoder cable length of up to 10 meters hence can be easily integrated into different industrial environments. For sine/cosine signals the value of the differential voltage is 1 VSS and the angular position resolution is given by 13-bit (1 VSS). As for the power, It has the power consumption of only 0.01 W of power from the bus and 0.3 W of internal I/O power. For power supply of the encoder, the module delivers 5V ~5% output voltage.

The overload-proof and short-circuit-proof of the X20DS1928 also ensure that the modules and all the components connected are also protected from any electrical defaults that may lead to their destruction. It is designed to work under the temperature condition of -25 to 60 C when mounted horizontally and -25 to 50 C when mounted vertically which makes it suitable for varying industrial applications. Besides, it can also withstand various storage and transport conditions ranging from -40 to 85 degree Celsius.

Angular position resolution
13 bit
Bus power consumption
0.01 W
Differential signal voltage
1 VSS
Encoder inputs
EnDat 2.1/2.2
Encoder power output
5 V ±5%
Internal I/O power consumption
1.3 W
Max encoder cable length
10 m
Operating temperature (horizontal)
-25 to 60 °C
Operating temperature (vertical)
-25 to 50 °C
Protection
Overload and short-circuit proof
Signal frequency
DC to 400 kHz
Signal lines
Shielded cables required
Signal transmission (sine/cosine)
Differential, symmetrical
Status indicators
Counting direction, operating and module status
Storage temperature
-40 to 85 °C
Transport temperature
-40 to 85 °C

Frequently Asked Questions about X20DS1928:

Q: What is the maximum encoder cable length for the X20DS1928?

A: The module supports encoder cable lengths up to 10 meters.

Q: What is the differential voltage for sine/cosine signals on the X20DS1928?

A: The differential voltage is 1 VSS.

Q: What is the power consumption of the X20DS1928?

A: It consumes 0.01W from the bus and 0.3W for internal I/O.

Q: What are the operating temperature ranges for the X20DS1928?

A: It operates at -25 degrees C to +60 degrees C when mounted horizontally and -25 degrees C to +50 degrees C when mounted vertically.

Q: What voltage does the X20DS1928 provide for encoder power?

A: It delivers 5V ~5% output voltage for the encoder.


Internal Product Review

  • ‘‘The X20DS1928 by B&R Automation is an I/O module for EnDat 2.1/2.2 encoders with 400 kHz DC coupling and a 10m cable length. It provides 1 VSS differential voltage and 13-bit resolution. It consumes 0.01W from the bus and 0.3W for I/O, and operates between -25 degrees C and +60 degrees C (horizontal) or -25 degrees C and +50 degrees C (vertical).’’

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