Electronic actuator control unit and control arrangement for technical installations
A technology of control unit and control device, which can be applied in the direction of program control, comprehensive factory control, general control system, etc., and can solve the problems of increasing the number of feedback input terminals.
Inactive Publication Date: 2020-03-27
VALEO THERMAL COMML VEHICLES GERMANY GMBH
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0010] In order to create individual diagnostic options for each actuator, each actuator control unit is usually connected to the central controller via a separate feedback line in the prior art, which results in a large amount of wiring and significantly increases the central controller1 The number of feedback input terminals of the
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[0037] The central controller 1 and the actuator control unit are in image 3 Shown as a microprocessor. However, on the contrary, if the central controller 1 and the actuator control unit can perform the functions described herein in combination with the present invention, any other electronic logic circuit can be used.
[0038] versus figure 1 with figure 2 The central controller for the control device of each actuator group shown in ( image 3 Only one control unit is shown in) similar, image 3 The central controller 1 of the device according to the invention shown in has only one signal terminal 10. However, according to the present invention, this signal terminal 10 is designed to be used as an output terminal and an input terminal, i.e., digital signals can be transmitted and received and evaluated.
[0039] For the former purpose, a transistor 12 that can be controlled by the central controller 1 is provided. Through the transistor 12, the voltage level prevailing at ...
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An electronic actuator control unit (14) has two separate signal terminals (16, 17), each of which can be used as a signal input terminal and a signal output terminal. Thereby, at least two such actuator control units can be connected in series to form a chain such that a downstream signal terminal (17) of an actuator control unit located at a starting point of the chain is connected to an upstream signal terminal (16) of a subsequent actuator control unit, etc. During normal operation, each actuator control unit repeats the signal received at its upstream signal terminal (16) and invariably transmits said signal to its downstream signal terminal (17). Furthermore, each actuator control unit has a diagnostic unit that generates an error signal when an actuator belonging to the respective actuator control unit fails. In the event of this error signal, the actuator control unit interrupts the normal operation such that the actuator control unit pulls its upstream signal terminal to a predetermined fixed potential for a predetermined period of time (T0).
Description
Technical field [0001] The present invention relates to an electronic actuator control unit as described in the preamble of claim 1 and a control device for technical installations, the control device comprising a control unit for controlling a plurality of actuators The central controller of the serial chain formed. Background technique [0002] In this case, each actuator control unit is assigned to one of a plurality of similar actuators, and in this context, the actuator may be a fan, a pump, a compressor, etc., in particular. The technical installation considered here may be, for example, an air-conditioning system for a high-capacity vehicle such as a bus. A plurality of actuators (for example, an axial fan and / or a radial blower of an air-conditioning system) respectively form a group, as one of its operating parameters, for example, the rotational speed of the actuator has the same instantaneous set point. This set value is sent as a predefined time-varying variable fro...
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IPC IPC(8): G05B23/02
CPCG05B23/0213G05B2219/24065G05B9/02G05B19/4185G08C25/00G08C19/02Y02P90/02
Inventor 海瑞德·雷德柏格
Owner VALEO THERMAL COMML VEHICLES GERMANY GMBH