Apply LOGO! ventilation system control circuit a
Source: InternetPublisher:红水杯 Keywords: control circuit system control motor Updated: 2020/09/27
The traditional relay ventilation system control circuit is shown in the figure. Contactor KM controls the exhaust gas exhaust motor ;
KMz controls the fresh air supply motor . In the figure, sl is the flow monitor pressure control contact at the exhaust gas exhaust device
, and S2 is the flow monitor pressure control contact at the fresh air supply device. When the air pressure is less than the specified value, the contact is closed;
KTi and KTz are the time Relay; KA is the fault alarm intermediate relay; SBi is the start button; SB2 is the stop button
; Hi is the fresh air supply indicator light; H2 is the fault alarm signal light.
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