Decentralization type control apparatus for an air-conditioning

Details Decentralization type control apparatus for an air-conditioning Decentralization type control apparatus for an air-conditioning

1986-04-09

1987-06-23

Tanner, Harry

Refrigeration

With indicator or tester

Operatively correlated with automatic control

236 94, F25B 4900

Patent

active

046742913

ABSTRACT:
A decentralization type control apparatus for an air-conditioning or a refrigerating apparatus comprising a plurality of terminal control units and a central control unit for controlling the plurality of terminal control units. Each of the terminal control units is provided with a monitoring and controlling section for monitoring operations of the central control unit, a first memory part which stores information output from the central control unit through the monitoring and controlling section and information input into the terminal control unit itself, a second memory part storing a control program for a load, a control part for controlling the air conditioning or refrigerating apparatus by the information stored in the memory parts, and an output part generating an alarm to the outside, wherein when a fault in the central control unit is detected by the monitoring and controlling section, the terminal control unit solely takes over operations to control the air-conditioning or refrigerating apparatus and generates from the output part an alarm informing the fault of the central control unit.

REFERENCES:
patent: 4212078 (1980-07-01), Games et al.
patent: 4333316 (1982-06-01), Stamp, Jr. et al.
patent: 4381549 (1983-04-01), Stamp, Jr. et al.

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