Item no. 2857-550

Current signal conditioner; Current input signal; Current and voltage output signal; Digital and relay output; Configuration via software; Supply voltage: 24 VDC; 22.5 mm module width

Description

Short description:

The 2857-550 Current Signal Conditioner measures AC/DC currents up to 100 A, while converting the measured current into an analog standard signal at the output.

Features:

  • Both digital signal output and relay with changeover contact react to configured measuring range limits (switching ON/OFF delay and threshold value switch function configurable with up to two threshold values).
  • Clipping capability provides analog signal limitation to output end values.
  • Adjustable software filter
  • Input/Output response simulation via configuration display
  • Safe 3-way isolation with 3 kV test voltage per EN 61010-1

Note:


Additional setting options via interface configuration software or interface configuration app

Product details

Details

Technical Data

Configuration
Configuration options DIP switches
WAGO interface configuration software
WAGO interface configuration app
WAGO configuration display
Input
Input signal type Current
Input signal, current AC 0.5 … 100 A; DC ±100 A
Frequency range 15 … 1000 Hz
Max. input current 100 A AC/DC
Response threshold 500 mA (AC); 250 mA (DC)
Resolution (current) 10 mA
Output – Analog
Output signal type Current
Voltage
Output signal voltage ± 5 V; 0 … 5 V; 1 … 5 V; ± 10 V; 0 … 10 V
Output signal current ±10 mA; 0 … 10 mA; 2 … 10 mA; ±20 mA; 0 … 20 mA; 4 … 20 mA
Load impedance (output/voltage) ≥ 1 kΩ
Load impedance (output/current) ≤ 600 Ω
Output – Digital
Max. switching voltage (DO) Supply voltage (applied) – 0.3 V
Max. continuous current (DO) 100 mA (no internal restriction)
Number of switching tresholds (DO) 1 or 2 (adjustable)
Configurable rise/fall delay time (DO) 0 … 60 s (via software)
Output – Relay
Dielectric strength open contact (AC, 1 min) 1 kVrms
Number of changeover/switchover contacts 1
Contact material (relay) AgNi + Au
Max. switching voltage AC 250 V
Limiting continuous current (relay; terminal block assembly) 6 A (≤ 60 °C); 3 A (60 … 70 °C)
Dielectric strength open contact (AC, 1 min) 1 kVrms
Pull-in time (typ.) 8 ms
Drop-out time (typ.) 4 ms
Bounce time (typ) 8 ms
Number of switching tresholds (relay) 1 or 2 (adjustable)
Configurable rise/fall delay time (relay) 0 … 60 s (via software)
Signal processing
Measuring procedure True RMS measurement (TRMS); Arithmetic mean value
Max. operating frequency 3.3 kHz
Software filter; adjustable moving mean value (filtering level: 30)
Step response typ. 60 ms (DC; at software filter 3/default setting); 250 ms (AC)
Measurement error
Transmission error max. ≤ 1 % (of the full scale value)
Temperature coefficient ≤ 0.01 %/K
Power supply
Type of power supply 24 VDC
Nominal supply voltage US DC 24 V
Supply voltage range ±30 %
Current consumption at supply voltage ≤ 50 mA (+ IDO)
Safety and protection:
Test voltage (input/output/supply) AC 3 kV; 50 Hz; 1 min
Test voltage (measuring circuit/output) AC 4 kV; 50 Hz; 1 min
Protection class IP20

Connection data

Connection technology Push-in CAGE CLAMP®
WAGO terminal picoMAX® 5.0
Solid conductor 0.2 … 2.5 mm² / 24 … 12 AWG
Fine-stranded conductor 0.2 … 2.5 mm² / 24 … 12 AWG
Strip length 9 … 10 mm / 0.35 … 0.39 inch
Feedthrough for measurement conductor Ø 9.5 mm

Geometrical Data

Width 22.5 mm / 0.886 inch
Height from upper-edge of DIN-35 rail 107 mm / 4.213 inch
Depth 105 mm / 4.134 inch

Mechanical data

Type of mounting DIN-35 rail

Material Data

Fire load 1.918 MJ
Weight 102.9 g

Environmental Requirements

Surrounding air (operating) temperature -40 … 70 °C
Surrounding air (storage) temperature -40 … 85 °C

Standards and specifications

Conformity marking CE
EMC immunity to interference EN 61000-6-2; EN 61326-2-3; EN 50121-3-2
EMC emission of interference EN 61000-6-4; EN 61326-2-3; EN 50121-3-2
Standards/specifications EN 61010-1; EN 61373

Commercial data

Product Group 6 (Interface Electronics)
Packaging type bag
Country of origin DE
GTIN 4050821676997
Customs Tariff No. 85437090300

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Marking accessories

Testing and measuring

Power supplies

Installation Notes

4 pictures
Configuring

Configuration via DIP switches

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2 pictures
Inserting a conductor

Pluggable connection technology

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1 picture
Safety

Lock-out seal option

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