Field termination assembly supporting use of mistake-proof keys

Patent metadata

Field	Value
Publication number	US-10790609-B2
Application number	US-201916263144-A
Country	US
Kind code	B2
Filing date	Jan 31, 2019
Priority date	Oct 22, 2018
Publication date	Sep 29, 2020
Grant date	Sep 29, 2020

Abstract

A system includes a housing having multiple slots. The system also includes multiple adaptor modules each configured to be inserted into one of the slots and perform at least one function related to an associated input or output signal. For each slot-adaptor module pair, the slot includes one of a key and a receptacle configured to receive the key, and the adaptor module includes the other of the key and the receptacle. Each key fits into the receptacle associated with one type of adaptor module and cannot fit into the receptacles associated with other types of adaptor modules. Each receptacle accepts the key associated with one type of adaptor module and cannot accept the keys associated with other types of adaptor modules. Each of at least one of the keys and the receptacles is rotatable to achieve one of multiple different orientations. Different ones of the keys have different cross-sectional shapes.

First claim

What is claimed is:

1. A system comprising:
a housing comprising multiple slots;
a first printed circuit board carrying first connectors configured to be coupled to multiple external devices, a second connector configured to be coupled to at least one additional external device, and a power connector; and
a second printed circuit board electrically coupled to the first printed circuit board, the second printed circuit board carrying fuses and electrical disconnects associated with the multiple adaptor modules;
multiple adaptor modules each configured to be inserted into one of the slots and to perform at least one function related to an associated input or output signal;
wherein, for each slot-adaptor module pair, the slot comprises one of a key and a receptacle configured to receive the key, and the adaptor module comprises the other of the key and the receptacle;
wherein each key fits into the receptacle associated with one type of adaptor module and cannot fit into the receptacles associated with other types of adaptor modules;
wherein each receptacle accepts the key associated with one type of adaptor module and cannot accept the keys associated with other types of adaptor modules;
wherein each of at least one of the keys and the receptacles is rotatable to achieve one of multiple different orientations; and
wherein different ones of the keys have different cross-sectional shapes.

2. The system of claim 1 , wherein each of the slots is configured to receive any of the different types of adaptor modules.

3. The system of claim 1 , wherein:
the housing comprises the receptacles; and
the adaptor modules comprise the keys.

4. The system of claim 1 , wherein:
the housing and the adaptor modules form at least part of a field termination assembly; and
the field termination assembly further comprises multiple electrical terminals configured to be electrically coupled to multiple field devices in an industrial process control and automation system.

5. The system of claim 1 , wherein at least one of the keys comprises a universal key configured to be inserted into most or all of the receptacles.

6. The system of claim 1 , wherein at least one of the receptacles comprises a universal channel block configured to block insertion of most or all of the keys.

7. The system of claim 1 , wherein:
the different cross-sectional shapes are associated with different classes of adaptor modules; and
the different orientations are associated with different channel types within each class of adaptor module.

8. An apparatus comprising:
a housing comprising multiple slots, each slot configured to receive an adaptor module that performs at least one function related to an associated input or output signal;
wherein: a first printed circuit board is configured to be electrically coupled to the adaptor module and carries first connectors configured to be coupled to multiple external devices, a second connector configured to be coupled to at least one additional external device, and a power connector; and
the apparatus further comprises a second printed circuit board electrically coupled to the first printed circuit board, the second printed circuit board carrying fuses and electrical disconnects associated with the multiple adaptor modules;
wherein each slot comprises one of (i) a key configured to be inserted into a receptacle of the associated adaptor module or (ii) a receptacle configured to receive a key of the associated adaptor module;
wherein one of:
each key fits into the receptacle associated with one type of adaptor module and cannot fit into the receptacles associated with other types of adaptor modules; or
each receptacle accepts the key associated with one type of adaptor module and cannot accept the keys associated with other types of adaptor modules;

wherein each of at least one of the keys and the receptacles is rotatable to achieve one of multiple different orientations; and
wherein different ones of the keys have different cross-sectional shapes.

9. The apparatus of claim 8 , wherein each of the slots is configured to receive any of the different types of adaptor modules.

10. The apparatus of claim 8 , wherein:
the first connectors are configured to be coupled to multiple field devices in an industrial process control and automation system; and
the second connector is configured to be coupled to at least one process controller in the industrial process control and automation system.

11. The apparatus of claim 8 , wherein the different cross-sectional shapes comprise trapezoidal, rectangular, and circular cross-sectional shapes.

12. The apparatus of claim 8 , wherein:
the different cross-sectional shapes are associated with different classes of adaptor modules; and
the different orientations are associated with different channel types within each class of adaptor module.

13. A method comprising:
inserting multiple adaptor modules into multiple slots of a housing, each adaptor module configured to perform at least one function related to an associated input or output signal; and
matching, for each slot-adaptor module pair, a key and a receptacle configured to receive the key, the slot comprising one of the key and the receptacle, the adaptor module comprises the other of the key and the receptacle;
wherein each key fits into the receptacle associated with one type of adaptor module and cannot fit into the receptacles associated with other types of adaptor modules;
wherein each receptacle accepts the key associated with one type of adaptor module and cannot accept the keys associated with other types of adaptor modules;
wherein each of at least one of the keys and the receptacles is rotatable to achieve one of multiple different orientations; and wherein different ones of the keys have different cross-sectional shapes; and
wherein at least one of the keys comprises a universal key configured to be inserted into most or all of the receptacles.

14. The method of claim 13 , wherein each of the slots is configured to receive any of the different types of adaptor modules.

15. The method of claim 13 , wherein at least one of the receptacles comprises a universal channel block configured to block insertion of most or all of the keys.

16. The method of claim 13 , wherein:
the different cross-sectional shapes are associated with different classes of adaptor modules; and
the different orientations are associated with different channel types within each class of adaptor module.

Assignees

• Honeywell Int Inc

Inventors

• Pakimo Dawa
• Balakrishna Vishwanath
• Vijaykumar Hemanth
• Bhutia Karma
• Deshpande Shripurnabodh
• Cherian Jaison
• Thayumanavan Chandrashekar
• Kumar Kn Dinesh

Classifications

• H01R9/2416

  Means for guiding or retaining wires or cables connected to terminal blocks · CPC title

• H01R25/006

  the coupling part being secured to apparatus or structure, e.g. duplex wall receptacle · CPC title

• H01R12/55

  characterised by the terminals · CPC title

• H01R13/514 Primary

  composed as a modular blocks or assembly, i.e. composed of co-operating parts provided with contact members or holding contact members between them · CPC title

• G05B19/0423 Primary

  Input/output · CPC title