AD-TW 201 ST, TWB 201 ST

Description

The separation converter AD-TW 201 ST serves the galvanic separation of impressed currents. It obtains its auxiliary energy form the input signal. The connection of an additional auxiliary voltage is not necessary. The output current is independent of the connected load up to the maximum value. When the output current loop is disconnected, the input of the isolating transformer becomes high-impedance. If this causes problems in the system, the AD-TWB 201 ST device variant can be used. This variant has an internal electronic bypass that keeps the current flow at the input.

Application

Economic separation of computer inputs, protection of sensitive units against potential delay, galvanic decoupling in complex measuring units.The device is designed in plug-in module technology.

Business data

Order number
AD-TW 201 ST	Without bypass
AD-TWB 201 ST	With bypass
Identifiers
Customs tariff number / country of origin	8543 70 90 / Deutschland

Information

Downloads
Data sheet	en-tw201st.pdf (154 kB)
Safety instructions	ad-safety-instructions.pdf (86 kB)

Technical specifications

Input current
Measuring range	0/4 ... 20 mA
Input voltage	< 25 V
Self-voltage consumption AD-TW 201 ST	< 2,5 V
Self-voltage consumption AD-TWB 201 ST	< 3,5 V
Oscillation current	< 80 µA
Output current
Output range	0/4 ... 20 mA
Max. burden	500 Ohm
Burden error	-0,03% / 100 Ohm
Residual ripple	0,5 % (500 Ohm; 20 mA)
Transmission behaviour
Basic accuracy	< 0,3 %
Input / output	1 : 1
Temperature influence	50 ppm/K
Response time	~ 20 ms
Transmission frequency	500 Hz (500 Ohm)
Housing
Dimensions (WxHxD)	20x30x16,5 mm
Type of protection	IP 20
Connection method	Plug-in module
Weight	~ 80 g
Environmental conditions
Ambient temperature	-10 ... 50 °C
Storage and transport	-10 ... 70 °C (no condensation)
EMC
Product family standard	EN 61326-1 ¹⁾
Emitted interference	EN 55011, CISPR11 Cl. B, Gr. 1
Galvanic isolation
Base isolation, functional separation
Working voltage	50 V DC
Test voltages input / output	500 V, 50 Hz (1 min.)

¹⁾ During checking, slight signal deviations are possible.

Block and wiring diagram

AD-TW 201 ST, TWB 201 ST

Dimensions

AD-TW 201 ST, TWB 201 ST

CAD / CAE Daten

CAD model is not yet available for this product.

The CAD product overview can be found at: adamczewski.partcommunity.com