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Headquarters Malaysia
Beckhoff Automation Sdn. Bhd.

Lot 7, Lorong Teknologi A, Jalan Teknologi,
Taman Perindustrian Sains Selangor, Kota Damansara,
47810, Petaling Jaya, Selangor, Malaysia

+60 3 6151-3088
info@beckhoff.com.my
www.beckhoff.com/ms-my/

EL3351 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit

EL3351 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit

EL3351 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit

Run LED 1
Error LED 1
Run LED 2
Error LED 2
+UD
-UD
-Uv = 0 V
Shield
+UREF
-UREF
+Uv = 5 V
Shield
Top view 
Contact assembly 
The supply voltage for
the strain gauge can be
drawn from the outputs
+UV and -UV of the terminal
(5 V) or it can be supplied
from an external source.
With external strain gauge
supply only max. ±12 V
are permitted.
EL3351 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit

EL3351 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit

Measurement technology easily configured: Analog EtherCAT input terminals.

Measurement technology simply integrated: With the analog EtherCAT Terminals.

Precise strain measurement in the I/O system

Measurement technology easily configured: Analog EtherCAT input terminals.

Measurement technology simply integrated: With the analog EtherCAT Terminals.

Precise strain measurement in the I/O system

The EL3351 analog input terminal permits direct connection of a resistor bridge. The bridge voltage, UD, and the supply voltage, UREF, to the bridge are digitized with a 16 bit resolution, and are transmitted along an electrically isolated channel to the supervising automation system. The input channels are available in the form of two 16 bit values for further processing. The resulting measurement can be calculated from the formula: measurement = UD/UREF. Precise acquisition of the supply voltage along with the bridge voltage compensates for long-term and temperature drift.

Product status:

regular delivery

Product information

Technical dataEL3351
Number of inputs2, for 1 resistor bridge in full bridge technology
Power supplyvia the E-bus
Distributed clocks
Measuring range UDmax. -20…+20 mV
Measuring range UREFmax. -12…+12 V
Internal resistance> 200 kΩ (UREF), > 1 MΩ (UD)
Supported nominal sensitivitycalculated in PLC, freely selectable
Input filter limit frequency50 Hz default setting, parameterizable
Conversion time2.5…800 ms, configurable, max. 400 samples/s
Power supply UV5 V, max. 20 mA
Resolution16 bit, 32 bit presentation
Filter50 Hz, configurable
Measurement error/ uncertainty< ±0.1% (relative to full scale value, 50 Hz filter)
Current consumption power contacts
Current consumption E-bustyp. 170 mA
Special featuresintegrated 5 V DC bridge supply
Operating/storage temperature0…+55°C/-25…+85°C
Weightapprox. 60 g
Relative humidity95%, no condensation
Vibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.IP20/variable
Approvals/markingsCE, UL, ATEX, IECEx
Pluggable wiringfor all ESxxxx terminals
Ex markingATEX:
II 3 G Ex ec IIC T4 Gc
IECEx:
Ex ec IIC T4 Gc
Housing dataEL-12-8pinES-12-8pin
Design formcompact terminal housing with signal LEDsterminal housing with pluggable wiring level
Materialpolycarbonate
Dimensions (W x H x D)12 mm x 100 mm x 68 mm
Installationon 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means ofdouble slot and key connection
Markinglabeling of the BZxxx series
Wiringsolid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver
Connection cross-sections*: 0.08…2.5 mm²,
st*: 0.08…2.5 mm²,
f*: 0.14…1.5 mm²
s*: 0.08…1.5 mm²,
st*: 0.08…1.5 mm²,
f*: 0.14…1.5 mm²
Connection cross-section AWGs*: AWG28…14,
st*: AWG28…14,
f*: AWG26…16
s*: AWG28…16,
st*: AWG28…16,
f*: AWG26…16
Stripping length8…9 mm9…10 mm
Current load power contactsImax: 10 A

*s: solid wire; st: stranded wire; f: with ferrule

Ordering information
EL3351EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit
ES3351EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit, pluggable wiring

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