Wago 857-815 Data Sheet

Data sheet | Item number:857-815

Temperature signal conditioner for RTD sensors; Current and voltage output
signal; Power via output; 6 mm module width

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Data sheet | Item number:857-815

Derating

Item description

Short description:

The 857-815 Loop-Powered RTD Temperature Signal Conditioner records Pt100, Pt200, Pt500 and Pt1000 sensors and resistors up to 4.5 kΩ,
converting the temperature signal into an analog standard signal on the output side.

The loop-powered RTD temperature signal conditioner provides safe isolation between input and output with 3 kV test voltage per EN 61010-1.

Features:

No additional supply voltage required

For Pt100, Pt200, Pt500 and Pt1000 sensors, as well as resistors up to 4.5 kOhm

2-, 3-, and 4-wire connection technology

Switching between measurement ranges is calibrated

Detects sensor wire break/short circuit

Safe 2-way isolation with 3 kV test voltage per EN 61010-1

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Data sheet | Item number:857-815

Data

Technical Data

Configuration

Configuration options DIP switches

Input

Input signal type Pt sensors

Resistance

Max. input current 50 mA

Max. input voltage 30 V

Input – RTD sensors

Sensor types (RTD) Pt100

Pt200
Pt500
Pt1000

Sensor connection 2-wire; 3-wire; 4-wire (switchable)

Max. sensor supply current (RTD) ≤0.5mA

Measurement range temperature (RTD) -200 … 850°C

Min. measuring span (RTD) 50 K

Input – Resistors

Input range resistance 0 … 1kΩ;0 … 4.5kΩ

Output

Output signal type Current

Output signal voltage 0 … 5 V; 1 … 5 V; 0 … 10 V; 2 … 10 V

Output signal current 0 … 10 mA; 2 … 10 mA; 0 … 20 mA; 4 … 20 mA

Load impedance (output/current) ≤600Ω (See derating graph)

Signal processing

Step response typ. 1,000ms

Measurement error

Transmission error typ. ≤ 0.1 % at max. measuring span

Transmission error of set measurement range ≤ ((40 K/set measurement range [K]) + 0,1) %

Temperature coefficient ≤ 0.02 %/K

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Data sheet | Item number:857-815

Power supply

Type of power supply loop-powered (via output)

Supply voltage DC8 … 30V (power derived from the output circuit)

Safety and protection:

Test voltage AC 3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

Mechanical data

Type of mounting DIN-35 rail

Material Data

Fire load 0 MJ

Weight 39.8 g

Environmental Requirements

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

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

Relative humidity 5 … 95% (no condensation)

Max. operating altitude 2000 m

Standards and specifications

Conformity marking 1

EMC immunity to interference EN 61000-6-2; EN 61326-1; EN 50121-3-2

EMC emission of interference EN 61000-6-3; EN 61326-1; EN 50121-3-2

Standards/specifications EN 61010-1; EN 61373

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