Beckhoff EJ3255 EtherCAT plug-in module

Beckhoff EJ3255 EtherCAT plug-in module

The EJ3255 EtherCAT plug-in module enables potentiometers to be connected directly. A stabilized power supply in the module and the ratiometric measurement of the input voltage offer the preconditions for precise measurement. On account of its high sampling rate and together with potentiometer position encoders, the compact 5-channel module represents an economical position detector.

Technical data:EJ3255

Number of inputs:5

Power supply:via UP contacts

Auxiliary power current:UP contacts: dependent on the potentiometers, max. 125 mA

Technology:ratiometric potentiometer evaluation with supply, 3-wire

Distributed clocks:yes

Feed voltage potentiometer:typ. 10 V ±10%

Internal resistance:>> 100 kΩ to wiper connection

Input filter limit frequency:typ. -3 dB at 3 kHz and potentiometer 50 kΩ

Sensor types:potentiometer 300 Ω…50 kΩ

Output current:max. 0.3 A total supply current for the potentiometers

Wiring fail indication:yes

Conversion time:typ. 300…700 μs, dependent on settings, default setting: approx. 500 μs (5 channels, filter deactivated)

Resolution:16 bit (incl. sign)

Measurement error/uncertainty:< ±0.5% (relative to full scale value)

Electrical isolation:500 V (E-bus/field potential)

Current consumption E-bus:typ. 80 mA

Special features:open-circuit recognition, supply monitoring, activatable filters, simultaneous measurement of the channels

Weight:approx. 30 g

Operating/storage temperature:0…+55°C/-25…+85°C

Relative humidity:95%, no condensation

EMC immunity/emission:conforms to EN 61000-6-2/EN 61000-6-4

Vibration/shock resistance:conforms to EN 60068-2-6/EN 60068-2-27

Protect. rating/installation pos.:IP20/see documentation

Approvals/markings:CE

Housing data Beckhoff EJ3255 EtherCAT plug-in module

Design form:EtherCAT I/O plug-in module

Material:polycarbonate

Installation:on signal distribution board

Mechanical coding:EJ plug-in module: signal-specific coding pins on the housing,

signal distribution board: holes in the printed circuit board

Locking:latching lug in circuit board cut-out

Connection method:field wiring: application-specific wiring level on the signal distribution board,

EJ plug-in module: 2 x 20-pin socket strip

Dimensions (W x H x D):12 mm x 66 mm x 55 mm