ATE179826T1 - ARRANGEMENT FOR THE POTENTIALLY ISOLATED TRANSMISSION OF DC AND AC CURRENT SIGNALS - Google Patents

ARRANGEMENT FOR THE POTENTIALLY ISOLATED TRANSMISSION OF DC AND AC CURRENT SIGNALS

Info

Publication number
ATE179826T1
ATE179826T1 AT94250295T AT94250295T ATE179826T1 AT E179826 T1 ATE179826 T1 AT E179826T1 AT 94250295 T AT94250295 T AT 94250295T AT 94250295 T AT94250295 T AT 94250295T AT E179826 T1 ATE179826 T1 AT E179826T1
Authority
AT
Austria
Prior art keywords
transmission
arrangement
invertor
rectifier
transformer
Prior art date
Application number
AT94250295T
Other languages
German (de)
Inventor
Zur Gathen Guenter Von
Original Assignee
Hartmann & Braun Gmbh & Co Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hartmann & Braun Gmbh & Co Kg filed Critical Hartmann & Braun Gmbh & Co Kg
Application granted granted Critical
Publication of ATE179826T1 publication Critical patent/ATE179826T1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Inverter Devices (AREA)
  • Burglar Alarm Systems (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Power Conversion In General (AREA)

Abstract

The invention relates to an arrangement for galvanically isolated transmission of DC and AC signals via two-wire lines, having a combination comprising an invertor, a coupling stage with galvanic isolation and a rectifier for unidirectional DC transmission and a transformer for unidirectional DC transmission and a transformer for AC transmission, the invertor being connected to a first pair of connecting terminals and the rectifier to a second pair of connecting terminals. In order to transmit DC signals unidirectionally and AC signals bidirectionally in a galvanically isolated manner via a joint two-wire line while maintaining a 0/4 ...20mA interface, it is proposed according to the invention, that a first series inductance (141) is connected upstream of the invertor (11), that a second series inductance (142) is connected downstream of the rectifier (13), and that the first and the second series inductances (141, 142) are windings of the transformer (14) for AC transmission. <IMAGE>
AT94250295T 1993-12-14 1994-12-14 ARRANGEMENT FOR THE POTENTIALLY ISOLATED TRANSMISSION OF DC AND AC CURRENT SIGNALS ATE179826T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4343540A DE4343540C2 (en) 1993-12-14 1993-12-14 Arrangement for the isolated transmission of direct and alternating current signals

Publications (1)

Publication Number Publication Date
ATE179826T1 true ATE179826T1 (en) 1999-05-15

Family

ID=6505569

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94250295T ATE179826T1 (en) 1993-12-14 1994-12-14 ARRANGEMENT FOR THE POTENTIALLY ISOLATED TRANSMISSION OF DC AND AC CURRENT SIGNALS

Country Status (3)

Country Link
EP (1) EP0658866B1 (en)
AT (1) ATE179826T1 (en)
DE (2) DE4343540C2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421837C2 (en) * 1994-06-22 2003-04-17 Adl Analoge & Digitale Leistun Driver module for potential-free signal transmission
DE19622295A1 (en) * 1996-05-22 1997-11-27 Hartmann & Braun Ag Arrangement for data transmission in process control systems
DE29718405U1 (en) * 1997-10-16 1998-11-12 Siemens AG, 80333 München Analog input unit
DE19925943A1 (en) * 1999-06-08 2000-12-21 Krohne Messtechnik Kg Circuit arrangement for data acquisition, transmission and evaluation
DE10335203A1 (en) * 2003-07-30 2005-03-10 Flowtec Ag Service interface for connection to field devices of process automation
FI121101B (en) * 2007-01-22 2010-06-30 Abb Oy Apparatus for producing an analog current or voltage signal
DE102008012414A1 (en) * 2008-02-29 2009-09-03 Siemens Aktiengesellschaft Front end for use in sensor or actuator component of digital signal processing system, has hardware for maintaining potential separation between analog and digital circuit, and coupler transferring processing result to inner potential

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292633A (en) * 1978-11-24 1981-09-29 Robertshaw Controls Company Two-wire isolated signal transmitter
DE3407324A1 (en) * 1984-02-29 1985-08-29 Hartmann & Braun Ag, 6000 Frankfurt Circuit arrangement for DC isolation of analog DC signals
DE3526997A1 (en) * 1984-07-28 1986-02-06 Knick Elektronische Meßgeräte GmbH & Co, 1000 Berlin Direct current transmission circuit
DE69127075T2 (en) * 1990-02-21 1998-02-26 Rosemount Inc MULTIFUNCTIONAL INSULATION TRANSFORMER
US5227782A (en) * 1991-08-14 1993-07-13 Rosemount Inc. Hydrostatic interface unit
DE4232922C2 (en) * 1992-09-28 1995-10-05 Mannesmann Ag Arrangement for data transmission in process control systems

Also Published As

Publication number Publication date
DE59408212D1 (en) 1999-06-10
EP0658866B1 (en) 1999-05-06
DE4343540C2 (en) 1995-12-07
DE4343540A1 (en) 1995-07-27
EP0658866A1 (en) 1995-06-21

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Legal Events

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REN Ceased due to non-payment of the annual fee