Beckhoff EJ3255, Documentation

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Product overview
EJ3255 16 Version: 1.1
3.2 EJ3255 - Technical data
Technical data EJ3255
Number of analog inputs 5
Power supply via Up contacts
Technology ratiometric potentiometer evaluation with own supply, 3-wire
connection
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 bits representation (including sign)
Measuring error (total measuring
range) < ± 0.5 % (relative to full scale value)
Electrical isolation 500 V (E-bus/signal voltage)
Current consumption load voltage (Up
contacts) dependent on the potentiometers, max. 70 mA
Current consumption via E-bus typ. 80 mA
Special Features Open-circuit recognition, supply monitoring, activatable filters
simultaneous measurement of the channels
Permissible ambient temperature range
during operation 0°C .. +55°C
Permissible ambient temperature range
during storage -25°C .. +85°C
Permissible relative air humidity 95 %, no condensation
Operating altitude max. 2,000 m
Dimensions (W x H x D) approx. 12 mm x 66 mm x 55 mm
Weight app. 30 g
Mounting on signal distribution board
Pollution degree 2
Installation position
Standard [ } 23]
Position of the coding pins [
}
26]
1 and 6
Color coding green
Vibration / shock resistance according to EN 60068-2-6/EN 60068-2-27 (with corresponding
signal distribution board)
EMC immunity / emission according to EN 61000-6-2/EN 61000-6-4 (with corresponding
signal distribution board)
Protection class EJ module: IP20
EJ system: Dependent on the signal distribution board
Approval CE
CE approval
The CE Marking refers to the EtherCAT plug-in module mentioned above.
If the EtherCAT plug-in module is used in the production of a ready-to-use end product (PCB in con-
junction with a housing), the manufacturer of the end product must check compliance of the overall
system with relevant directives and CE certification.
To operate the EtherCAT plug-in modules, they must be installed in a housing.