Datasheet

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ISO 9001 CERTIFIED
Cynergy3 Components Ltd.
7 Cobham Road
Ferndown Industrial Estate
Wimborne, Dorset 21 7BH PE
SC420TWHL 2017
Telephone [phone]
Email:[e-mail]
Made in the UK
SC420TWHL
mA and Voltage Input Isolating Terminals
Voltage or Current Inputs
Simple 2 Wire 4-20mA Output
Low Cost Solution
Replace Standard DIN-Rail Terminals
RFI Protection, Input Isolation
Loop Powered Output Gives High Noise Immunity
The SC420TWHL series of isolating terminal
blocks can replace standard DIN-Rail
terminal to provide input isolation, signal
conversion and excellent RFI and noise
rejection
The units are powered from the output side,
making them ideal for plc and data
acquisition applications.
Inputs for the SC420TWHL include mA or
Voltage and other units are available with
thermocouple, mV or RTD inputs. The
standard output is 4-20mA.
The SC420TWHL units are housed in ultra-
compact DIN-rail mounted enclosures just
18mm wide.
Input Options
The range of inputs for the SC420TWHL are as follows:-
Standard Ranges are 4-20mA, 0-20mA, 0-10V and 1-5V.
But the unit can cover the following ranges:-
Input Types Input Range MIN Input Range MAX
DC Current 0 - 100µA 0 - 5 A
DC Voltage 0 - 100mV 0 - 100 V
Technical Specifications
Parameter Min Typ Max Comments
Supply Voltage 10V 24V 32V Powered from Output Side
Input Current 0mA 0-20mA 30mA
Full Scale Volt Drop 0.2V 0.3V On Input Side (20mA Input)
Input Impedance (Volt In) 1M Voltage Input
Ω
Input Impedance (mA In) 10M mA InputΩ
Output Linearity Error ±0.1%
Temp Coefficient 100ppm/ºC
Load Resistance Error ±5ppm/ 0 < RL < 600
ΩΩ
Time Constant (10-90%) 30ms 300ms for Thermocouple Input
Operating Ambient -15ºC 70ºC
Relative Humidity 0% 90%
Isolation Voltage 1kV
Surge Voltage 2.5kV for 50µSTransient of 10kV/µS
Notes
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur.
Device is protected against reverse polarity connection.
Accuracy figures based on 0-20mA input, 250 load resistance, and an ambient temperature of 20ºC.
Ω
Installation Data
Mounting DIN Rail TS35
Orientation Any
Connections Screw Clamp with pressure plate
Conductor Size 0.5-4.0mm
Insulation Stripping 12mm
Weight Approx 50g
Ordering Information
Part No.: SC420TWHL 4-20mA In 4-20mA Out
Connection Details
1. Output Channel +ve
2. Output Channel -ve
3. Input Channel +ve
4. Input Channel -ve
63mm
58mm
18mm