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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.
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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
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- 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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