EPP3504-0023 - Technical data

Technical data


Analog inputs

4 channel (differential)

Time relation between channels to each other

Simultaneous conversion of all channels in the box, synchronous conversion between devices, if DistributedClocks will be used

ADC conversion method

ΔΣ (Delta-Sigma) with internal sample rate

8 Msps

Cutoff frequency input filtering hardware
(see explanations within chapter Features/ Firmware filter concept)

Before AD converter:
Hardware low pass -3 dB @ 30 kHz
type butterworth 3th order

Within ADC after conversion:

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

type sinc3/average filter

The ramp-up time/ settling time/ delay caused by the filtering will be considered within the DistributedClocks-Timestamp.


24 bit (including sign)

Connection technology


Sampling rate (per channel, simultaneous)

100 µs/10 ksps

Free down sampling by Firmware via decimation factor


1…100 selectable

Supported EtherCAT cycle time

(depending on the operation mode)

DistributedClocks: min. 100 µs, max. 10 ms

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

FreeRun: not yet supported

Connection diagnosis

Wire break/short cut

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 EtherCAT P

Nominal voltage US

24 V DC (-15 %/+20 %)

Current consumption from US

typ. 150 mA

Nominal voltage UP

24 V DC (-15 %/+20 %)

Current consumption from UP

No (diagnosis LED only, sensors will be supplied by US)

Thermal power dissipation

typ. 3 W

Dielectric strength - destruction limit

max. permitted short-term/permanent voltage between the contact points ±I1, ±I2, +Uv and –Uv: non-supplied ±40 V, supplied ±36 V

Note: -Uv corresponds to internal AGND

Recommended operation voltage range to compliance with specification

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

Note: -Uv corresponds to internal AGND

Common data


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)


Electrical isolation channel/channel 2)


Electrical isolation channel/EtherCAT 2)

Functional insulation, 707 V DC (type test)

Electrical isolation channel/SGND 2)

Functional insulation, 707 V DC (type test)


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.

1) see chapters Self-test and self-test report and Connection test/switchable connection diagnostics

2) see notes to potential groups within chapter Power supply, potential groups

Basic mechanical


Connection type

Push-In spring-loaded terminal PC FMC 1.5
6‑pol, RM 2.54 mm

Pluggable, 25 mating cycles

Dimensions (W x H x D)

See chapter “Mounting and wiring”/ “Mounting”/ “Dimensions”


Directly on metallic, earthed structure screwed

Note mounting

Plug partly not within scope of delivery, see chapter

Notes on connection technology EPP3504-0023


approx. 250 g

Permissible ambient temperature range during operation

0…+55 °C

Permissible ambient temperature range during storage

-25…+85 °C

Environmental data


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 (because of plug connectors)

Normative data


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 *)


EMC notes

In case of push-in connectors, 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 into the Up supply at set connection “Connect Up- to GNDA“ within CoE (F800:01) can lead to measurement deviations up to ±FSV.

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