BUZ-03M Unit for Motor Control and Protection
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BUZ-03M electronic control unit provided with magnetic starter is aimed for control and protection of asynchronous electric motors with the capacity from 0,37 to 250 kW.
Application- control over stop valves (gate valves, ball cocks and butterfly valves), as well as general purpose pumps, compressors, fans, coolers, heaters and conveyors.
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Basic Functions
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Motor control
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- Motor control by means of external magnetic starter
- Motor control by means of terminal and torque switches
- Motor control from keyboard or upper level controller
- Electronic measuring of the motor torque with capacity up to 15kW
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Remote control
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- Motor control by means of discrete outputs
- Linking with telemechanics system through RS-485 interface with Profibus DP and Modbus RTU protocols
- Hookup of up to 64 BUZ-03M units to one data line
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Motor protection
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- From phase loss
- From dropping of insulation resistance
- From winding overheating
- Adjustable current-time protection
- From shaft load loss
- From excessive shaft load, including motor automatic switch off
- From overrunning allowable frequency start
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Protection from circuit parameters failure
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- From overvoltage and undervoltage
- From change in the sequence of circuit phases
- From phase distortion in the supply voltage
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Technical Parameters
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Capacity of the electric motor to be connected, kW
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0.37…250
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Nominal voltage of the main circuit, V
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380
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Supply voltage of BUZ-03M, V
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220
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Deviation of the circuit voltage, %
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from -49 to +47
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Sags in the circuit, s
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up to 1
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Supply voltage for discrete output, V
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220
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Number of discrete outputs programmable as per the purpose of function, ea
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4
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Supported exchange rate, bps
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9600 – 57600
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Ambient temperature, °С
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from -40 to +60
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Dimensions (width x depth x height), mm
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215х84х138
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Weight, kg
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1
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Features
- Measuring phase voltage, motor insulation resistance, motor torque
- Displaying at LC display at all current, preset parameters, readings of sensors and black boxes data
- Adjusting of the position by means of in-built PID controller
- Recording consumed power (active, reactive and total)
- Position sensor with analogue output (4-20) mA or resistive position sensor can be connected
- Self diagnostics and storing information on steering instructions, setup changes and emergencies in the data module (black box) with independent power supply and real time clock
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