ELM350x - Technical data

Analog inputs

2 channel (differential)

4 channel (differential)

Time relation between channels

Simultaneous conversion of all channels in the terminal, synchronous conversion between terminals, if DistributedClocks is used

ADC conversion method

ΔΣ (delta-sigma) with internal sampling rate

8 Msps

5.12 Msps

Input filter limit frequency for hardware
(see explanations in chapter

ELM features/firmware filter concept)

Before AD converter:
hardware low-pass -3 dB @ 30 kHz,
type: Butterworth 3rd order

Within ADC after conversion:

Low-pass
-3 dB @ 5.3 kHz, rise time 150 µs

Low-pass
-3 dB @ 2.6 kHz, rise time 300 µs

Type sinc3/average filter

The rise time/settling time/delay caused by the filtering will be considered within the DistributedClocks timestamp.

Resolution

24 bit (including sign)

Connection technology

2/3/4/5/6-wire

Sampling rate (per channel, simultaneous)

50 µs/20 ksps

100 µs/10 ksps

Free down sampling by firmware via decimation factor

Oversampling

1...100 can be selected

Supported EtherCAT cycle time

(dependent on operation mode)

DistributedClocks: min. 100 µs, max. 10 ms

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

FreeRun: not yet supported

Connection diagnosis

Wire break/short circuit

Internal analog ground AGND

Existing by external connection to -Uv

Overvoltage protection of the inputs related to -Uv (internal ground)

Value to follow

Internal power supply

Via E-bus

E-bus current consumption

Typ. 450 mA

Typ. 720 mA *⁾

Current consumption of power contacts

-

Thermal power loss

Typ. 3 W

Dielectric strength – destruction limit

Max. permitted short-term/continuous voltage between the contact points ±I1, ±I2, +Uv and -Uv: unsupplied ±40 V, supplied ±36 V

Note: -Uv corresponds to the internal AGND

Recommended operating voltage range for compliance with specification

Max. permitted voltage during specified normal operation between ±I1 and ±I2: typ. ±10 V against –Uv

Note: -Uv corresponds to the internal AGND

Distributed Clocks

Yes, with Oversampling n = 1…100, accuracy << 1 μs

Special features

Extended Range 107 %, freely configurable numeric filters, TrueRMS, integrator/differentiator, non-linear scaling, PeakHold

Functional diagnosis ¹⁾

Yes

Electrical isolation channel/channel ²⁾

no

Electrical isolation channel/E-Bus ²⁾

Functional insulation, 707 V DC (type test)

Electrical isolation channel/SGND ²⁾

Functional insulation, 707 V DC (type test)

Configuration

via the EtherCAT Master, e.g. TwinCAT

Note to cable length

Signal cable lengths to the sensor / encoder over 3 m must be shielded, the shield design must be in line with the state of the art and be effective. For larger cable lengths > 30 m, a suitable surge protection should be provided if appropriate interference could affect the signal cable.

Connection type

6-pin. PushIn spring-loaded technology, service plug

Dimensions (W x H x D)

See chapter Housing

Mounting

on 35 mm rail conforms to EN 60715

Note Mounting

Plug partly not within scope of delivery, see chapter

Notes on connection technology

Weight

Approx. 350 g

Permissible ambient temperature range during operation

-25…+60 °C

0…+55 °C

Permissible ambient temperature range during storage

-40…+85 °C

-25…+85 °C

Permissible operating altitude range

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

Relative humidity

max. 95%, no condensation

Protection class

IP 20

Installation position

Variable

Vibration-/shock resistance

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

EMC-resistance / emission

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

Approvals/ markings *⁾

CE, UKCA, cULus_60, EAC

CE, UKCA, cULus_55, EAC

EMC notes

In case of the "PushIn" connector, ESD air discharges conforming to EN 61000-6-4 into the connectors or to the lines connected there can lead to measurement deviations up to ±FSV within the respective channel or to other channels by crosstalk.

Peak voltages (surge) conforming to EN 61000-6-2 that are applied to the cable shield can lead to measurement deviations up to ±FSV.