Pump products

burks S350 Pump Dedicated Variable Frequency Drive

Product description: burks S350 pump dedicated variable frequency drive features current vector control designed for the water industry, constant pressure accuracy of 0.01MPa, supports master-slave linkage and auto-restar
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Product Overview

The S350 is a current vector inverter dedicated to the water industry, designed for constant pressure water supply with a constant pressure accuracy of 0.01MPa. It can efficiently drive induction motors and synchronous motors. The panel features a MASTER indicator light and supports master/auxiliary linked control. The auto-restart on power recovery function is enabled by default.

Technical Parameters

Control Mode	Open-loop vector control (SVC), closed-loop vector control (FVC), V/F control
Maximum Frequency	Vector control 0~300Hz; V/F control 0~3200Hz
Carrier Frequency	0.5kHz~15kHz, automatically adjustable according to load characteristics
Starting Torque	0.5Hz / 110%
Speed Regulation Range	1:100 (SVC), 1:1000 (FVC)
Steady Speed Accuracy	±0.5% (SVC), ±0.02% (FVC)
Constant Pressure Accuracy	0.01MPa
Torque Control Accuracy	±5% (FVC)
Jog Control	Jog frequency range 0.00Hz~50.00Hz
Automatic Voltage Regulation (AVR)	Automatically maintains a constant output voltage when the grid voltage changes
Panel Indicators	READY (power/alarm), RUN (run/stop), COM (communication), SENSOR (sensor), MASTER (master/auxiliary)

Application Scope

Constant pressure water supply systems, variable frequency retrofit of water supply pumps, and support for one-duty-one-standby and multi-pump linked water supply units. For matching power and voltage specifications, please consult and confirm according to the motor nameplate; installation wiring and parameter settings should be performed by professionals.

Operating Environment

Ambient Temperature	-10℃~+50℃
Humidity	Less than 95%RH (non-condensing)
Vibration	Not more than 0.6G, keep away from equipment such as punch presses
Protection Requirements	Prevent intrusion of water drops, steam, dust, fine metal powder, oil, salt and corrosive gases; keep away from electromagnetic interference sources
Prohibited Environments	Do not use in hazardous environments with flammable, combustible or explosive gases, liquids or solids

Common Fault Codes

Code	Fault	Common Causes and Troubleshooting Direction
Err.01P	Undervoltage fault	Instantaneous power failure, input voltage outside the specified range, abnormal bus voltage; reset the fault and adjust the voltage to the normal range
Err.02P	Overvoltage during acceleration	Input voltage too high, acceleration time too short; adjust the voltage to the normal range and increase the acceleration time
Err.03P	Overcurrent during deceleration	Output circuit grounded or short-circuited, deceleration time too short, voltage too low; eliminate peripheral faults and increase the deceleration time
Err.04P	Overcurrent at constant speed	Output circuit grounded or short-circuited, sudden load applied during operation, undersized selection; eliminate peripheral faults and select a higher power rating
Err.05P	Overcurrent during acceleration	Acceleration time too short, inappropriate V/F curve, voltage too low; increase the acceleration time and adjust the torque boost or V/F curve
Err.06P	Overvoltage during deceleration	Input voltage too high, deceleration time too short; adjust the voltage to the normal range and increase the deceleration time
Err.07P	Motor overload	Undersized selection, excessive load or motor stall; reduce the load and check the motor and mechanical conditions
Err.08P	Inverter overload	Undersized selection, excessive load or motor stall; select an inverter with a higher power rating
Err.09P	Inverter unit protection	Output circuit short-circuited, module overheated, internal wiring loose; eliminate peripheral faults and check the air duct and fan
Err.10P	Control power supply fault	Input voltage outside the specified range; adjust the voltage to within the specified range
Err.12P	Output phase loss	Abnormal leads from the inverter to the motor, three-phase output unbalanced; eliminate peripheral faults and check the three-phase motor windings
Err.20P	Input phase loss	Abnormal three-phase input power supply, abnormal surge protection board or main control board; check and eliminate peripheral circuit problems