Wago 857-400 Data Sheet

Data sheet | Item number:857-400

Isolation amplifier; Current and voltage input signal; Current and voltage
output signal; Zero/span adjustment; Configuration via DIP switch; Supply
voltage: 24 VDC; 6 mm module width

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Data sheet | Item number:857-400

Item description

Short description:

The configurable isolation amplifier converts, amplifies, filters and electrically isolates analog standard signals.

Features:

Zero/span adjustment across the entire measuring range

Switching between measuring ranges is calibrated

Switchable max. operating frequency

Safe 3-way isolation with 2.5 kV test voltage per EN 61140

Data

Technical Data

Configuration

Configuration options DIP switches

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) ≥1MΩ

Zero/span adjustment ± 3% of the full scale value

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Data sheet | Item number:857-400

Output

Output signal type Current

Voltage

Output signal voltage 0 … 5 V; 1 … 5 V; 0 … 10 V; 2 … 10 V (calibrated switchable)

Output signal current 0 … 20 mA; 4 … 20 mA; 0 … 10 mA; 2 … 10 mA (calibrated switchable)

Load impedance (output/voltage) ≥2kΩ

Load impedance (output/current) ≤600Ω

Signal processing

Max. operating frequency 100Hz/ 5kHz (configurable via DIP switch)

Step response typ. 3.5ms (100 Hz);100µs (5 kHz)

Measurement error

Transmission error typ. ≤ 0.1 % 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 ≤25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

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

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Data sheet | Item number:857-400

Mechanical data

Type of mounting DIN-35 rail

Material Data

Color light gray

Fire load 0 MJ

Weight 36.8 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 4045454471293

Customs Tariff No. 85437090300

Approvals / Certificates

Ex-Approvals

Logo Approval Additional Approval Text Certificate name

IECEx

TUEV Nord Cert GmbH

IEC 60079-0 IECEX_TUN_14.0030_X

IECEx

TUEV Nord Cert GmbH

EN 60079-0 TÜV_14_ATEX_112692_X

Ship Approvals

Logo Approval Additional Approval Text

Certificate
name

DNV GL

Det Norske Veritas, Germanischer Lloyd

- TAA00001D1

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