Wago 857-423 Data Sheet

Data sheet | Item number:857-423

Isolation amplifier; Current and voltage input signal; 2 x current output signal;
Supply voltage: 24 VDC; 6 mm module width

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Data sheet | Item number:857-423

Item description

Short description:

The signal splitter converts, amplifies, filters and electrically isolates analog standard signals.

Features:

Two configurable current outputs

Switching between measuring ranges is calibrated

Switchable max. operating frequency

Safe 4-way isolation with 2.5 kV test voltage per EN 61140

Data

Technical Data

Configuration

Configuration options DIP switches

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Data sheet | Item number:857-423

Input

Input signal type Voltage

Current

Input signal voltage 0 … 5V;1 … 5V;0 … 10V (calibrated configurable signals)

Input signal, current 0 … 20mA;4 … 20mA (calibrated configurable signals)

Input resistance (intput/current) ≤50Ω

Input resistance (input/voltage) ≥100kΩ

Output

Output signal type Current

Output signal current 0 … 20 mA; 4 … 20 mA (calibrated switchable)

Load impedance (output/current) ≤300Ω

Signal processing

Max. operating frequency 100Hz/ 1kHz (configurable via DIP switch)

Step response typ. 3.5ms (100 Hz);300µs (1 kHz)

Measurement error

Transmission error typ. ≤ 0.1 % of upper range value

Transmission error max. ≤ 0.2 % of upper range value

Temperature coefficient ≤ 0.01 %/K

Power supply

Type of power supply 24 VDC

Nominal supply voltage U

S

DC24V

Supply voltage range ±30%

Current consumption at supply voltage ≤35mA

Safety and protection:

Test voltage (input/output/supply) AC 2.5kV;50Hz;1min

Protection class IP20

Connection data

Connection technology

Push-in CAGE CLAMP

®

Solid conductor 0.08 … 2.5mm²/ 28 … 14AWG

Fine-stranded conductor 0.34 … 2.5mm²/ 22 … 14AWG

Strip length 9 … 10mm/ 0.35 … 0.39inch

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Data sheet | Item number:857-423

Geometrical Data

Width 6mm/ 0.236inch

Height from upper-edge of DIN-35 rail 97.8mm/ 3.85inch

Depth 94mm/ 3.701inch

Mechanical data

Type of mounting DIN-35 rail

Material Data

Color light gray

Fire load 0.849 MJ

Weight 40.604 g

Environmental Requirements

Surrounding air (operating) temperature -25 … 70°C

Surrounding air (storage) temperature -40 … 85°C

Standards and specifications

Conformity marking 1

EMC immunity to interference EN 61000-6-2

EMC emission of interference EN 61000-6-4

Commercial data

Product Group 6 (Interface Electronics)

Country of origin DE

GTIN 4045454471316

Customs Tariff No. 85437090300

Approvals / Certificates

Ex-Approvals

Logo Approval Additional Approval Text Certificate name

IECEx

TUEV Nord Cert GmbH

EN 60079-0 TÜV_14_ATEX_112692_X

IECEx

TUEV Nord Cert GmbH

IEC 60079-0 IECEX_TUN_14.0030_X

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Data sheet | Item number:857-423

Ship Approvals

Logo Approval Additional Approval Text

Certificate
name

BV

Bureau Veritas S.A.

- 40179_A0

DNV GL

Det Norske Veritas, Germanischer Lloyd

- TAA00001D1

NK

Nippon Kaiji Kyokai

- TA17255M

PRS

Polski Rejestr Statków

- TE/2186
/880590/18

UL-Approvals

Logo Approval Additional Approval Text

Certificate
name

UL

UL International Netherlands B.V. (ORDINARY
LOCATIONS)

UL 508 E175199

Sec.4

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