A90 User Manual

User Manual of A90 Series Inverter Preface Thank you for choosing SINEE’s A90 series inverter. Document No.: 31010180 Release time: 2020-5 Version: 101 The A90 series inverter is a high-reliability and small-sized inverter launched by SINEE. It supports the three-phase AC asynchronous motor and permanent magnet synchronous motor; a variety of international leading drive control technologies, such as the vector VF (VVF) control and speed sensorless vector control (SVC); and speed output and torque output. Features of the A90 series inverter:  No need for derating at the ambient temperature of 50°C;  Small size, leading in the industry;  Wide speed range and high control accuracy:

VF/1:50; SVC/1:200; rated speed:  High load capacity in low-frequency band: VF/1Hz/150%, SVC/0.25Hz/150%; ±0.2%;  Perfect protections: protections against the overcurrent, overvoltage, overload, overheating, etc. Before using the A90 series inverter, please read this manual carefully and keep it properly. While connecting the inverter to motor for the first time, please select the motor type (asynchronous or synchronous) correctly and set the motor nameplate parameters: rated power, rated voltage, rated current, rated frequency, rated speed, motor connection, rated power factor, etc.

We are committed to continuously improving our products and product data, so the data provided by us may be modified without prior notice. For the latest changes and contents, please visit www.sinee.cn. 1

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User Manual of A90 Series Inverter Safety Precautions Safety definition: Safety precautions are divided into the following two categories in this manual: Danger: The dangers caused by nonconforming operations may include serious injuries and even deaths. Warning: The danger caused by nonconforming operations, including moderate or minor injuries and equipment damage. During the installation, commissioning and maintenance, please read this chapter carefully, and follow the safety precautions herein. Our company will not be liable for any injury or loss arising from nonconforming operations. Precautions Before installation: Danger 1.

Do not install the product in the case of water in the package or missing or damaged components found in unpacking! 2. Do not install the product in the case of inconsistency between the actual product name and identification on the outer package! Warning 1. Handle the controller with care; otherwise, it may be damaged! 2. Never use the inverter damaged or with some parts missing; otherwise, injuries may be caused! 3. Do not touch the components of the control system with your hands; otherwise, there is a danger of static damage! During installation: Danger 1. Please install the inverter on a metal retardant object (e.g. metal) and keep it away 2

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User Manual of A90 Series Inverter from combustibles; otherwise, a fire may be caused! 2. Do not loosen the fixing bolts of components, especially those with red marks! Warning 1. Never make wire connectors or screws fall into the inverter; otherwise, the inverter may be damaged! 2. Install the inverter in a place with little vibration and exposure to direct sunlight. 3. When the inverter is installed a relatively closed cabinet or space, pay attention to the installation gap to ensure the effects of heat dissipation. During wiring: Danger 1.

Follow the instructions in this manual, and appoint professional and electrical engineering personnel to complete wiring; otherwise, unexpected dangers may be caused! 2. The inverter and power supply must be separated by a circuit breaker (recommendation: greater than or equal to and closest to twice the rated current); otherwise, a fire may be caused! 3. Before wiring, make sure that the power supply is in the zero energy status; otherwise, electric shock may be caused! 4. Never connect the input power supply to the output terminals (U, V, W) of the inverter. Pay attention to the marks of wiring terminals, and connect wires correctly! Otherwise, the inverter may be damaged! 5.

Make the inverter grounded correctly and reliably according to the standards; otherwise, electric shock and fire may be caused! Warning 1. Make sure that the lines meet the EMC requirements and local safety standards. For wire diameters, refer to the recommendations. Otherwise, an accident may occur! 2. Never connect the braking resistor directly between the DC bus and terminal. Otherwise, a fire may be caused! 3. Tighten the terminals with a screwdriver of specified torque; otherwise, there is a risk of fire. 4. Never connect the phase-shifting capacitor and LC/RC noise filter to the output circuit. 5.

Do not connect the electromagnetic switch and electromagnetic contactor to the output circuit. Otherwise, the overcurrent protection circuit of the inverter will be enabled. In severe cases, the inverter may be subject to internal damage. 6. Do not dismantle the connecting cable inside the inverter; otherwise, internal damage may be caused to the inverter. 3

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User Manual of A90 Series Inverter Before power-on: Danger 1. Make sure that the voltage level of the input power supply is consistent with the rated voltage of the inverter; and the input terminals (R, S, T) and output terminals (U, V, W) of the power supply are connected correctly. Check whether there is short circuit in the peripheral circuits connected to the inverter and whether all connecting lines are tightened; otherwise, the inverter may be damaged! 2. The withstand voltage test has been performed to all parts of the inverter, so it is not necessary to carry it out again. Otherwise, an accident may be caused! Warning 1.

The inverter must not be powered on until it is properly covered; otherwise, electric shock may be caused! 2. The wiring of all peripheral accessories must be in line with the instructions in this manual. All wires should be connected correctly according to the circuit connections in this manual. Otherwise, an accident may occur! After power-on: Danger 1. Never touch the inverter and surrounding circuits with wet hands; otherwise, electric shock may occur! 2. If the indicator is not ON and the keyboard has no response after power-on, immediately turn off the power supply.

Never touch the inverter terminals (R, S, T) and the terminals on the terminal block with your hands or screwdriver; otherwise, electric shock may be caused. Upon turning off the power supply, contact our customer service personnel. 3. At the beginning of power-on, the inverter automatically performs a safety test to external strong current circuits. Do not touch the inverter terminals (U, V, W) or motor terminals; otherwise, electric shock may be caused! 4. Do not disassemble any parts of the inverter while it is powered on. Warning 1. When parameter identification is required, please pay attention to the danger of injury during motor rotation; otherwise, an accident may occur! 2.

Do not change the parameters set by the inverter manufacturer without permission; otherwise, the inverter may be damaged! 4

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