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Advanced Engineering 2021

NEC Birmingham(B40 1NT)

03/11/2021 - 04/11/2021

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Heavy-duty AC motor drive performance at a normal-duty price point

Heavy-duty AC motor drive performance at a normal-duty price point

Selecting an AC motor drive that will be able to supply all the power and flexibility required without over- or under-dimensioning can be a challenge. A careful choice ensures the efficiency and reliability of equipment, systems, and production facilities. The new C2000 Plus Series of vector control motor drives from Delta offers improved overload capacity, making these drives an outstanding choice for more applications than ever before.

There are AC motor drives that perform well in general-purpose applications and others for more specific scenarios such as positioning or winding and unwinding. When evaluating AC drives, the first thing to consider is the type of power, single phase or three-phase. Next, input voltage and frequency must match the facility where the drive will operate. The new C2000 Plus is a three-phase motor drive that accepts voltages of 230V and 460V and performs well across a wide range of applications including positioning, cranes, extruders, and sectional mixers.

Traditional servo systems for positioning often include a permanent magnet motor and the corresponding motor drive. A separate PLC controller regulates the speed, direction, and more. Motor speed feedback to the controller is accomplished using a tachometer generator. An encoder provides position data. The advantages of permanent magnet motors are their relative light weight and precision for applications requiring lower horsepower. The disadvantage is cost.

The new C2000 Plus AC motor drive can be used with asynchronous AC induction motors as well as permanent magnet motors for precise control of position, speed, and torque. With an integrated encoder, programmable logic controller, and pulse generator, the C2000 Plus is suitable for both sensor and sensorless motors and applications that would traditionally have called for a servo system.

The C2000 Plus also supports multiple position control functions, including homing, multi-step positioning and single positioning. These functionalities are widely used in position control applications such as smart warehouses and automatic conveyor systems.

The overload capacity of the C2000 Plus has been increased to 560 kW. This is a critical advantage because it makes the drive suitable for applications in which a higher degree of overload can be expected for a short duration such as when a longer conveyor system must overcome inertia to get up to speed. The 60s overload capacity has been increased from 120% in the previous model to 150% in the C2000 Plus. This makes the new drive superior to a great number of options in the normal-duty segment and competitive with drives in the heavy-duty segment.

The C2000 Plus offers built-in data storage that allows users to read the PLC register of their drives using Fieldbus communications. The external PLC reads PLC data from the drive using various communication protocols and monitors the data collected from the drive. It triggers alarms if necessary.

Built-in time unit auto-conversion also allows the PLC to enable 33 kHz high-speed pulse count input. Users can calculate speed by using high-speed count input through the drive's internal conversion without purchasing any additional hardware.

The built-in PLC determines drive status automatically. Its virtual terminal simulates a hardware interface through communications or PLC control to trigger hardware. For example, when using the built-in PLC to determine the drive status, if the drive is not in AUTO mode, the virtual terminal function can switch the drive to AUTO mode.

Users can edit PLC programming via the Ethernet interface. Instead of going on-site, users can download, upload, or monitor PLC programs at the central control.

Environmental adaptability is more important than ever across a range of industries. The C2000 Plus now comes with improvements in many areas for significantly enhanced environmental endurance.

In the textiles industry, for instance, high temperatures and poor ventilation are common. This can make it difficult for drives to dissipate heat. Fiber can also accumulate in the heat sink, leading to overheating and faults. The heatsinks in the C2000 Plus Series have been specially designed with larger gaps between the individual blades and a polished extruded aluminum finish to prevent fiber from clogging them.

Heat dissipation is in fact important for compact drives across every industry. Beyond the heat sink, the unit’s fan plays an important role here. That’s why it must be protected accordingly. The C2000 Plus fan now offers IP55 protection (previously IP51) to maximize performance in environments where dust, oil mist, and salt mist may be present.

The PCB coating in the C2000 Plus has also been enhanced with wider spray coverage for anti-sulfur and anti-corrosion protection to comply with the IEC 60721-3-3: 3C3 standard. This standard protects the electronic components from corrosive gases (salt mist, SO2, O3, and H2S) and assures it can be operated in harsh environments such as sewage treatment facilities.


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