ShUN/B-X1-X2-X3-R3 can perform the functions of controlling the operation of: fire pump; drain pump; jockey pump; fan. SHUN/B-X1-X2-X3-R3 realises the following functions: control of presence and parameters of power supply at the network input; control of serviceability of the main circuits of the electrical circuit of the device; control of serviceability of input circuits from sensors and electro-contact gauges for open circuit and short circuit; control of the power circuit of the motor supply; local switching of the control mode of the electric drive to one of 3 modes: "Automatic" / "Manual" / "Disconnected"; transfer to the control panel signals of its state via digital communication line RS-R3; control of the connected actuator in accordance with commands received via digital communication line RS-R3 from the control panel, by level sensor commands or by local control commands.
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