DE59408212D1 - Arrangement for the isolated transmission of direct and alternating current signals - Google Patents

Arrangement for the isolated transmission of direct and alternating current signals

Info

Publication number
DE59408212D1
DE59408212D1 DE59408212T DE59408212T DE59408212D1 DE 59408212 D1 DE59408212 D1 DE 59408212D1 DE 59408212 T DE59408212 T DE 59408212T DE 59408212 T DE59408212 T DE 59408212T DE 59408212 D1 DE59408212 D1 DE 59408212D1
Authority
DE
Germany
Prior art keywords
transmission
arrangement
invertor
rectifier
transformer
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE59408212T
Other languages
German (de)
Inventor
Zur Gathen Guenter Von
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB AG Germany
Original Assignee
Hartmann and Braun AG
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 and Braun AG filed Critical Hartmann and Braun AG
Application granted granted Critical
Publication of DE59408212D1 publication Critical patent/DE59408212D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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

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>
DE59408212T 1993-12-14 1994-12-14 Arrangement for the isolated transmission of direct and alternating current signals Expired - Fee Related DE59408212D1 (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
DE59408212D1 true DE59408212D1 (en) 1999-06-10

Family

ID=6505569

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4343540A Expired - Fee Related DE4343540C2 (en) 1993-12-14 1993-12-14 Arrangement for the isolated transmission of direct and alternating current signals
DE59408212T Expired - Fee Related DE59408212D1 (en) 1993-12-14 1994-12-14 Arrangement for the isolated transmission of direct and alternating current signals

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE4343540A Expired - Fee Related DE4343540C2 (en) 1993-12-14 1993-12-14 Arrangement for the isolated transmission of direct and alternating 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 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
CA2073447A1 (en) * 1990-02-21 1991-08-22 William R. Kirkpatrick Multifunction isolation 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
EP0658866A1 (en) 1995-06-21
ATE179826T1 (en) 1999-05-15
DE4343540A1 (en) 1995-07-27
DE4343540C2 (en) 1995-12-07
EP0658866B1 (en) 1999-05-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: ABB PATENT GMBH, 68526 LADENBURG, DE

8320 Willingness to grant licences declared (paragraph 23)
8327 Change in the person/name/address of the patent owner

Owner name: ABB AG, 68309 MANNHEIM, DE

8339 Ceased/non-payment of the annual fee