Common technical data

Technical data

EL3751

Analog inputs

1 channel

Connection technology

2 - 6 wire

Resolution

24 bit including sign, 32 bit display

Sampling type

simultaneous

Ground reference

differential

Selection of oversampling factors

1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64

ADC conversion method

deltaSigma ΔΣ, 1.28 msps (internal sampling rate)

Limit frequency input filter hardware

Before AD converter: 30 kHz hardware filter
Within ADC after conversion: -3dB @ 3.2 kHz, mean value filter 5th order

Measuring error

Typically ±0.01% @ 23°C, exceptions for individual measuring ranges, details see function tables and 2) below.

Max. sampling rate/conversion time

10 ksps/ 100 µs (fixed, additionally free downsampling in firmware through decimation factor)

Supported EtherCAT cycle time

(depending on the operation mode)

DistributedClocks: min. 100 µs, max. 25 ms (max. 10 ms recommended)

FrameTriggered/Synchron: min. 200 µs, max. 100 ms

FreeRun: not supported

Signal delay (step response)

tbd.

Signal delay (linear)

tbd.

Phase response linear, constant envelope delay

Acquisition method

Simultaneous (1 channel, simultaneous with DC synchronization of several terminals)

Dielectric strength - destruction limit

max. permitted short-term/continuous voltage

  • Voltage between each contact point ±I1, ±I2, +UV, and –UV,: non-supplied ±40 V, supplied ±36 V
  • Voltage between every contact point and SGND (shield, mounting rail): see information to electrical isolation

Note: -UV, corresponds to internal GND

Recommended operation voltage range to compliance with specification (UCM, common mode)

max. permitted voltage during specified normal operation

  • ±I1 and ±I2: typ. ±10 V against –UV,

Note: -UV, corresponds to internal GND

Distributed Clocks

Yes, with oversampling

Electrical isolation bus/channel

500 V DC (1 min. typical test voltage)

Electrical isolation channel/channel

(not applicable since 1 channel)

Bit width of the process image (default setting)

32 bit / per value

Supports CoE Interface function

Yes

Special features

integrated switchable ¼ bridge extension for 120 and 350 Ω

Higher-order synchronization, PeakHold drag indicator, predefined and freely configurable software filters, TrueRMS, freely selectable downsampling, 2-stage integrator/differentiator, free scaling function (also non-linear), end value limiter, extended/legacy range, line compensation

Available with factory calibration certificate on request

Internal surge voltage protection of the inputs related to -Uv (internal ground)

+IN1, -IN1: at approx. 12 ±0.5 V
(within 30 V-Mode at approx. 37 ±1 V)

+IN2, -IN2: at approx. < -0.3 V or > +5.3 V

Supply voltage for electronic

via the E-bus

Current consumption via E-bus

typ. 260 mA

Thermal power dissipation

typ. 1.2 W

Current consumption from the power contacts

none

Permissible operating altitude range

0 to 2000 m (derating at higher altitudes on request)

Weight

approx. 65 g

Permissible ambient temperature range during operation

0…+55 °C (in horizontal installation position)

0…+45°C (all other installation positions)

Permissible ambient temperature range during storage

-25…+85 °C

Installation position

Operation possible in all installation positions; compliance with full accuracy only possible in horizontal/standard position.

Permissible relative humidity

95 %, no condensation

Max. sensor wire length

The wire length from the EtherCAT terminal to the sensor/encoder must have max. 30 m without any action of protection. For larger wire lengths a proper over voltage protection (surge protection) is required.

Dimensions (W x H x D)

approx. 15 mm x 100 mm x 70 mm (width aligned: 12 mm)

Mounting

on 35 mm mounting rail conforms to EN 60715

Vibration/shock resistance

conforms to EN 60068-2-6 / EN 60068-2-27

EMC immunity/emission

conforms to EN 61000-6-2 / EN 61000-6-4

Protection class

IP20

Approvals/ markings *)

CE, UKCA, EAC, UL, ATEX

*) Real applicable approvals/markings see type plate on the side (product marking).

2) Dominant part of the basic accuracy is its offset specification (see following tables). The process described in the Offset correction section eliminates this proportion and increases the measurement accuracy considerably.

Ex marking

Standard

Marking

ATEX

II 3 G Ex nA IIC T4 Gc