What are the drive differences between an ABB ACS Drives, model: ACSxxx-01E/03E/01 and ACSxxx-01U/03U/U1
Answer: The ABB ACSxxx-01E/03E/01 drives motor information parameters default to the following MOTOR NOM FREQ to 50Hz, MOTOR NOM POWER is in Kw, REF1 MAX to 50Hz, MAXIMUM SPEED to 1500RPM and MAXIMUM FREQ to 50Hz. The EMC metal screw is installed activating the EMC filter. 50 Hertz default output and power ratings in Kilowatt are standard for drives and other industrial electrical equipment in Western Europe, the United Kingdom and most countries located outside the United States of America. This is because electric motors are sized in Kilowatt ratings outside the USA; and, electric motors manufactured outside the USA run at full load speed when operating at 50 hertz.
The ACSxxx-01U/03U/U1 drives motor information parameters default to the following MOTOR NOM FREQ to 60Hz, MOTOR NOM POWER is in Hp, REF1 MAX to 60Hz, MAXIMUM SPEED to 1800RPM and MAXIMUM FREQ to 60Hz. The EMC plastic screw is installed deactivating the EMC filter, but the drive ships with the metal screw to activate the EMC filter. 60 Hertz default output and power ratings in Horsepower are standard for drives and other industrial electrical equipment in the United States of America. This is because electric motors are sized in horsepower ratings in the USA; and, electric motors manufactured in the USA run at full load speed when operating at 60 hertz.
There are several ways to build an ABB multi-motor setup with ABB micro drives. Master-slave control, parallel control of motors and combinations of these two ways. The most typical ABB multi-motor setup for compact drives is the parallel control, which means that several motors are powered by one inverter (parallel connection of motor windings). The benefits of such approach are that there is only one inverter to startup, and that less time and effort is needed for the installation work. Multi-motor setup is possible only with asynchronous motors.
Correct selection of drive is critical with this kind of ABB multi-motor setup. This is due to the fact that increased amount of common mode current will reduce the loading current capability of the drive.Factors that affect drive load ability and the amount of common mode current:
- Total length of motor cabling
- Total amount of parallel motors (motor size)
- Amount of parallel motor cables
- Motor cable type (shielded cable has higher capacitance than un-shielded)
- Common output choke for all motors (thermal current must be 1.2 times total sum of motor currents)
The drive is selected based on the sum of the connected motor powers. See the table below to indicate the drive type depending the total motor power. Typically, also the use of external output chokes is recommended and the maximum motor cable length is more limited than with a single motor connection. When one drive controls several motors, only scalar control should be used. Motor parameters (PN, I2N) are given as the sum of the nominal values of the motors. Nominal speed is given as an average of the motor rated speeds. It is recommended to limit the maximum current according to the actual need and it should not exceed 1.1 I2N (parameter 2003 MAX CURRENT). Only 4 kHz switching frequency is allowed to be used. When multiple motors are connected, the sum of the output cable lengths must not exceed the maximum allowed cable length (see table below). Cables should be separated as close to the drive as possible. If motor contactors are used, switching the contactors during operation is not recommended.
The ACS880-07 of ABB Inverter Drives is a cabinet-built single drive. The ACS880-07 is built-to-order to meet customers needs and the drive can meet any technical challenge partly through its built-in array of options. The features and options include: extended I/O, fieldbus options, du/dt filtering, EMC filtering, a brake resistor, fuses and a main switch. Induction motors, synchronous motors and induction servo motors are all supported as standard, without any additional software. The drive can control them in either open loop or closed loop, through its high precision motor control platform, direct torque control (DTC).
Built-in safety features reduce the need for external safety components. The drive supports the programming environment based on IEC 61131-3. The common drives architecture features the same control panel, parameter menu structure, universal accessories and engineering tools. The control panel is equipped with an intuitive and high-resolution control display that enables easy navigation. Many flexible data visualizations including bar charts, histograms and trend graphs help users to analyze processes, with assistants available to simplify setup. The menus and messages are customizable for the specific terminology of different applications. An integrated USB port allows easy connection to PC tool – Drive composer, which offers fast and harmonized startup, commissioning and monitoring. The built-in energy calculators, including used and saved kWh, CO2 reduction and money saved, help the user fine-tune processes to ensure optimal energy use. The energy optimizer control mode ensures the maximum torque per ampere, reducing energy drawn from the supply. The drive also offers built-in service features.
The ACS880-07 of ABB inverter drives is available in power ratings from 60 horsepower through 3000 horsepower (45 to 2800 Kw), and is compatible with a broad range of industries. Typical applications include conveyors, kilns, extruders, pumps and fans. The drive configuration contains a rectifier, DC link and an inverter, all built into a compact cabinet.
De-Rating ABB Drives for single phase input is possible with the ABB ACS310and ACS355 Series drives. The ACS3XX-01U drives ratings are supplied in standard ratings for a single-phase supply voltage ranging from 200 to 240 V. They would then be used to operate a three-phase motor. It is also possible to supply 230 V single phase power to some three phase drive ratings but this would require a de-rating of the output current when choosing a drive. Table Showing Drive Rating and Available Output Current When Single Phase Input Power Is Applied:
De-Rating ABB Drives for single phase input should only be performed by electrical technicians. If you’re de-rating ABB drives for single phase input, contact someonewith experience before purchasing or installing equipment. To learn more about ABB drives, visit the ABB Website. To purchase ABB drives or for ABB drive repair, contact Precision Electric.
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