| 摘要 |
<p>PURPOSE: To prevent a large space from being occupied, to reduce assembly cost and to realize intermediate control by means of air driving by constituting a bus with an air control compression pipe and an electric control signal conductor and electrically and simultaneously connecting it to all control units in terms of air. CONSTITUTION: The control electric signal conductor 3 of the electropneumatic bus 1 supplies control/setting signals to the control units 5, 6 and 7 connected from a central electronic controller 4. The central electronic controller 4 sends an external control signal to a module electronic circuit 8 controlling a central valve 9. The signal makes the air control compression pipe 2 into adjusted air pressure by a control compressed air source if need, decompresses or exhausts it here, and atmospheric pressure is made. The respective control units 5, 6 and 7 are formed as control circuits. Module controller 10, 11 and 12 are connected with the control electric signal conductor 3 for the reception of a call and a test on the control units 5, 6 and 7 and receive setting values on one hand, and are connected to measurement signal wirings 13, 14 and 15 on the other hand.</p> |
