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857-420 Isolation amplifier;Current input signal;Current and voltage output signal

857-420 Isolation amplifier;Current input signal;Current and voltage output signal
857-420 Isolation amplifier;Current input signal;Current and voltage output signal
857-420 Isolation amplifier;Current input signal;Current and voltage output signal
857-420 Isolation amplifier;Current input signal;Current and voltage output signal
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Article: 857-420
Brand: Wago
9836.64 грн.
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Description 857-420 Isolation amplifier;Current input signal;Current and voltage output signal

Short description:

WAGO's isolation amplifier provides the power required for 2- or 3-wire field transmitters and electrically isolates analog signals.

Features:
  • Power supply to SMART transmitters
  • Calibrated measurement range switching
  • 3-way electrical isolation with 2.5 kV test voltage

Main attributes 857-420 Isolation amplifier;Current input signal;Current and voltage output signal

Configuration
Configuration options DIP switch
Connection data
Connection technology Push-in CAGE CLAMP®
Fine-stranded conductor 0.34 … 2.5 mm² / 22 … 14 AWG
Solid conductor 0.08 … 2.5 mm² / 28 … 14 AWG
Strip length 9 … 10 mm
Environmental requirements
Ambient temperature (operation) -25 … +70 °C
Ambient temperature (storage) -40 … +85 °C
Operating altitude (max.) 2000 m
Relative humidity 5 … 95 % (no condensation permissible)
Input
Input current (max.) 50 mA
Input resistance (input current) ≤ 50 Ω
Input signal (current) 0 … 20 mA; 4 … 20 mA (calibrated switching)
Input signal type Current
Sensor supply Uv = 18 V; 30 mA
Material data
Fire load 0.543 MJ
Flammability class per UL94 V0
Insulation material (main housing) Polyamide (PA66)
Weight 37 g
Measurement error
Temperature coefficient ≤ 0.01 %/K
Transmission error (typ.) ≤ 0.1 % of upper-range value
Mechanical data
Mounting type DIN-35 rail
Output (analog)
Bias ≤ 20 µA
Load impedance (current output) ≤ 600 Ω
Load impedance (voltage output) ≥ 2 kΩ
Output signal (current) 0 … 20 mA; 4 … 20 mA (calibrated switching)
Output signal (voltage) 0 … 5 V; 1 … 5 V; 0 … 10 V; 2 … 10 V (calibrated switching)
Output signal type Voltage
Residual pulsation ≤ 10 mV (rms)
Physical data
Depth from upper-edge of DIN-rail 97.8 mm
Height 94 mm
Width 6 mm
Power supply
Current consumption at nominal supply voltage ≤ 45 mA 
Nominal supply voltage Uₛ DC 24 V
Power supply type 24 VDC
Supply voltage range ±30 %
Safety and protection
Protection type IP20
Signal processing
Limit frequency 100 Hz
Step response (typ.) 3.5 ms
Standards and specifications
Conformity marking CE
Standards/specifications DNV
Test voltage
Test voltage (input/output/supply) AC 2.5 kV; 50 Hz; 1 min

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857-420 Isolation amplifier;Current input signal;Current and voltage output signal
857-420 Isolation amplifier;Current input signal;Current and voltage output signal
Article:857-420
Pre-Order
9836.64 грн.
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