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Isolation Converter
AD-TW 41 GM ; AD-TW 41 ST


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  Description

The separation converter 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.

  Application

Economic separation of computer inputs, protection of sensitive units against potential delay, galvanic decoupling in complex measuring units. Optional available FSK-capable (HART® Communications Protocol). Caution: with open output the input becomes high-impedance! To avoid this behavior, the version can be used with bypass.

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  Business data

Order number
AD-TW 41 GM design GM
AD-TWB 41 GM design GM with output bypass
AD-TWH 41 GM design GM, FSK-transparency (HART®-Protokoll)
AD-TW 41 ST design ST
AD-TWB 41 ST design ST with output bypass

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  Technical specifications

Input current
Measuring range 0 ... 20 mA
Input voltage < 25 V
Voltage drop device < 2,5 V
Output current
Output range 0 ... 20 mA
Max. burden 1000 Ohm
Burden error -0,03% / 100 Ohm
Residual ripple 0,5 % (1000 Ohm; 20 mA)
Transmission behaviour
Basic accuracy < 0,2 %
Input / output 1 : 1
Temperature influence 50 ppm/K
Response time ~ 20 ms
Transmission frequency 500 Hz (500 Ohm)
Housing GM
Dimensions (WxHxD) 15x42,5x102 mm
Type of protection IP 20
Connection method screw clamp
Terminals, wire cross section 2,5 mm˛ flex wire / 4 mm˛ one wire
Bolting torque terminals 0,5 Nm
Weight ~ 60 g
Manner of fastening 35 mm DIN rail 35mm
Housing ST
Dimensions (WxHxD) 15x42,5x102 mm
Type of protection IP 20
Pluggable
Connection method screw clamp
Terminals, wire cross section 2,5 mm˛ flex wire / 4 mm˛ one wire
Bolting torque terminals 0,5 Nm
Weight ~ 50 g
Manner of fastening 35 mm DIN rail 35mm
Environmental conditions
Ambient temperature 0 ... 50 °C
Storage and transport -10 ... 70 °C (no bedewing)
EMC
Product family standard EN 61326 1)
Emitted interference EN 55011, CISPR11 Cl. B
Galvanic isolation
Base isolation, functional separation
Working voltage 50 VDC
Test voltages input / output 500 V, 50 Hz (1 min.)
Protection circuits
Input electrical surge protection
Output electrical surge protection
1) During checking, slight signal deviations are possible.

  Block and wiring diagram

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  Dimensions

AD-gm-st-masszeichnung.svg