When it comes to variable frequency drives, tradeoffs may need to be made. How much power do you need? How much space do you have? The SINAMICS V20 family of AC drives might just be the answer to these typical questions.
These Siemens-produced, SINAMICS branded VFDs come in a variety of frame sizes and output ratings for when you need a low-power drive to smoothly start and stop a motor or to control speed and torque during operation of an increasing number of a basic motion sequences.
The SINAMICS V20 AC drive family is an economical, compact, rugged and reliable group of drives that bring versatility, and ease of use and installation to 40-hp and under plant and machinery construction, individual automation, and drive solution applications.
With seven frame sizes, the SINAMICS V20 can be individually adapted to the particular application or user requirements using various options such as an external Basic Operator Panel (BOP), connecting cable, filter, braking resistors, shielding, and more.
The power range is:
- 0.12 kW to 30 kW (1/6 hp up to 40 hp).
The voltage range is:
- 1AC 200V … 240V (–10% / +10%)
- 3AC 380V … 480V (–15% / +10%)
The newest and smallest of the SINAMICS V20 family of drives are the FSAA and FSAB models that save more than 30% in mounting space compared to the previously smallest model, the SINAMICS’ FSA model (90 mm (3.5 in.) x 150 mm (6 in.)) . With a width of just 68 mm (2.7 in.) and a height of 142 mm (5.6 in.), the AA and AB models both have the same footprint, but different heatsink depths.
The V20 family of rugged devices, which are IP20 rated and can be EMC filtered, are tailored for operating pumps, fans, compressors and conveyor belts as well as for basic drive applications in the process and manufacturing industries.
Ease of use and installation
One of the V20’S benefits is ease of installation. The units can be wall mounted, push through mounted for efficient cooling, and side-by-side mounted to reduce required cabinet space. Typically, drives need to be 2 in. apart for cooling purposes, but with heat sinks located judiciously to release heat through the top and bottom of the unit.
The unit itself is easy to use. A Parameter Loader makes it easy to program and speed up commissioning. This modular, plug-and-play device easily installs to the face of the drive. The device uses a memory card that allows more than 100 parameters to be installed such as motor specifications, voltage, current speed, application deceleration rate acceleration rate and other pertinent data, says Jovan Cetkovic, Motion Specialist with Steiner Electric.
Additionally, “cloning” is possible by installing the same parameter loader on different drives.
Without the parameter loader, users access a basic operator panel on the face of the drive. Utilizing the BOP, all parameters can be programmed giving the user full control of the drive in terms of speed and other factors.
In addition, there are terminals on the face of the drive that allow for direct wiring for analog I/O control.
The SINAMICS’ V20’s feature a Keep Running Mode that keeps the output load running even in the event of power fluctuations, overvoltage, overcurrent, or other power stability issues.
Energy savings is achieved in several ways. For instance, the SINAMICS V20 drive makes it easy to save money through the use of an ECO mode that ensures that the motor current is automatically adapted to the load state. In addition to that, the drive is capable of DC bus couplings such that a drive regenerating can share power with other drives.
The drive also features a Hibernation Mode that reduces energy consumption when the drive is not in active use.
It also features an integrated braking chopper from 7.5 kW to 30 kW (10 hp up to 40 hp). When a motor is de-energized and coming to a stop, it changes from a motor to a generator producing energy. Resistors dissipate energy so the VFD’s capacitors are not damaged. This power can also be used during drive regeneration.
The V20 drive family has a number of accessories that can be used. For instance, a new extension module is available to increase the number of inputs and outputs of the SINAMICS V20 400V converter.
Mounted onto the converter, the module provides 2 additional digital inputs and 2 relay outputs to the converter. The module increases functionality. For example, it can now be used for multi-pump control, where one V20 can control a maximum of four pumps.
Equipped with connection ports on its front- and backside, the module may be used in combination with other accessories of the SINAMICS V20 such as the BOP, the BOP interface, and the Smart Access web server.
SINAMICS V20 Smart Access is a tiny drive-mounted web server module that turns a mobile device or laptop into a virtual operator panel, allowing it to commission, operate, diagnose, and maintain the AC drive.
An embedded graphical user interface (GUI) enables easy use of the SINAMICS V20 in every phase of operation. It requires only a few steps to set-up and no installation or download of additional software is needed. The onboard Quick Set-up Wizard provides users a fast and easy commissioning procedure, enabling all the following: motor data can be entered and checked, connection macros for digital inputs/outputs can be activated, application macros can be selected and activated for pumps, fans, compressors and other devices plus the common and frequently used parameters on the drive can be set for motor start, acceleration, deceleration, and min./max. speed.
For more information contact a Steiner application specialist at 1-800-STEINER (783-4637).