Automatic Diesel Generator Set

Signal of the state of the automatic control system of Diesel generator set can be divided into four categories according to their role.

(1) Start and stop signals. Automated generator set start and stop signals , the main power abnormalities (including loss of power , lack of phase, the voltage value exceeds the allowable value ) , and the other set by the user in accordance with the specific purpose of the unit generator set starting signal . These signals in some logical combination into the controller when its logical value of 1 , the diesel generator set is self-starting action in accordance with the provisions of the control flow ; Delay mechanically shut down when its logical value of 0 , the generator set . The power supply abnormality detection, usually breaking phase protection, a voltage comparator, etc., for some comes with the Controller of the power detection device, the detection of the power supply signal within the controller.

            (2) Diesel mining signal. In addition to the mining location (such as automatic operating mode, the manual condition), the need to detect the condition of the diesel engine including starter is successful, the diesel engine speed is normal, whether the abnormal pressure or diesel engine temperature lubricants. Protection of the diesel engine when the starter failed, diesel engine over speed, low lube oil pressure or temperature of diesel engine, the unit will automatically shut down and the police , at the same time , the system automatically lock . Without human intervention treatment, even if the start signal is received, the unit will not start automatically. Detection of these signals, usually through a dedicated sensor, such as speed sensors, pressure sensors, and temperature sensors.

            (3)  The generator status signal. In order to safe power supply to the load, it is necessary to detect the generator voltage, current, frequency, and ATS state. When the electricity excess must be appropriate protection to prevent damage to the generator, causing the accident, or reduce the quality of supply.

(4) Other signals. In addition to the above – mentioned signal, as an automatic control system, but also detect the battery voltage, the charging voltage, fuel level, etc., in order to ensure that the generator set is always in a state of the normal preparation machine, to meet the requirements of starting at any time. In addition, the automatic monitoring system of generator sets for communication generally has room environment (temperature, humidity, commissionaire and fire) signal detection.