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Siemens Frequency Inverters

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Siemens VFDs: when SINAMICS, when a simpler brand fits

Customers buy Siemens SINAMICS from us when they are already standardized on the German lineup (S7-1200/1500 PLCs, ProfiNet panels) or when they sell into the EU where SIL 2 / PL d STO is required on the declaration. Our typical buyer this year: a machine builder shipping serial equipment to Germany or Poland, a food line with functional safety requirements, a water utility standardized on Siemens. Outside those scenarios we honestly point customers at Delta, INVT, or Schneider ATV. Same job for 30-50% less.

The catalog carries 182 Siemens models across 9 series, 0.1 to 900 kW. SINAMICS V20 is the workhorse 0.1-22 kW for pump, fan, conveyor jobs. Minimum parameters, runs in 15 minutes. SINAMICS G120 is modular (CU + PM), vector control, STO, programmable DCC logic right inside the drive. SINAMICS G110 is a 220 V single-phase compact up to 3 kW. MicroMaster 420/430/440 is the previous generation, still available from our stock, with a strong price-to-feature ratio.

What we ask before you order Siemens

First: the job and the surrounding system. If Siemens PLCs and ProfiNet are already there, G120 is the default with no debate, because S7 integration takes us an hour. If it is just a motor-pump with no PLC at all, V20 is cheaper and simpler. Second: power and supply. Single-phase 220 V up to 3 kW – G110 or V20. Three-phase 380 V – the full V20/G120/MicroMaster lineup, just pick the load class (LO for pump-fan, HO for heavy starts with 150% overload).

Third: safety. STO (Safe Torque Off) is not in V20, only G120 from CU240 up. If the project needs SIL 2 / PL d per EN 62061, it has to be G120 with the safety module. We ship popular 1.5 / 3 / 5.5 / 11 / 22 kW from our Kyiv warehouse in 1 day. Other series come on factory order in 2-4 weeks. Siemens factory warranty is 12 months from commissioning, extension to 24 months is optional via service. We do series selection and start-up parameters free. Our typical customer gets a parameter file for their specific job along with the drive.

Siemens Variable Frequency Drive Series

Series Power Range Supply Voltage Models Typical Application
SINAMICS V20 0.1 – 22 kW 1×220 V / 3×380 V 48 Pumps, fans, conveyors — quick commissioning, minimal parameterisation
SINAMICS G120 0.4 – 250 kW 1×220 V / 3×380 V / 3×500 V 313 Modular CU + PM design. Vector control, integrated PLC, Safe Torque Off (STO)
SINAMICS G110 0.1 – 3 kW 1×220 V 56 Compact single-phase drives for small pumps and conveyors
MicroMaster 420 0.2 – 11 kW 1×220 V / 3×380 V 40 General-purpose motor control, easy integration with existing automation
MicroMaster 430 7.5 – 250 kW 3×380 V 27 High-power pumps and fans with built-in PID controller
MicroMaster 440 0.2 – 200 kW 1×220 V / 3×380 V 81 Hoisting equipment, textiles, complex vector control applications

Most Popular Models In Stock

Siemens VFD models most frequently chosen by our customers:

Model Series Power Supply Current (A)
Siemens 6SL3210-5BE21-5UV0 SINAMICS V20 1.5 kW 3×380 V 4.1
Siemens 6SL3210-5BE23-0UV0 SINAMICS V20 3.0 kW 3×380 V 7.3
Siemens 6SL3210-1NE14-1UL0 SINAMICS G120 1.5 kW 3×380 V 4.1

Why Choose Siemens Frequency Converters

  • Wide power range — from 0.1 kW (SINAMICS G110) to 900 kW (SINAMICS G150): solutions for every industrial scale.
  • Safety: STO (Safe Torque Off) — hardware safety function in the G120 series, certified to SIL 2 / PL d.
  • Modbus RTU / PROFIBUS / PROFINET — broad communication options for SCADA and Siemens S7-1200/S7-1500 PLC integration.
  • Embedded PLC (DCC) — the G120 supports Drive Control Chart programming for simple automation tasks without an external controller.
  • Energy savings — the P/N (pump and fan) mode reduces energy consumption by up to 30 % versus direct motor starting.

How to Select a Siemens VFD

  • Motor power (kW) — the drive rating should match or exceed the motor nameplate power by 10–20 % under heavy starting conditions.
  • Supply voltage — for a single-phase 220 V network choose SINAMICS V20 or MicroMaster 420/440; for three-phase 380 V the full lineup is available.
  • Load type — for pumps and fans choose V20 or MicroMaster 430; for hoisting and textile machinery choose MicroMaster 440 or G120 with vector control.
  • Communication interface — if PLC integration is required, select the G120 with an optional PROFIBUS or PROFINET module.

Related Categories

Warranty and Support

All Siemens frequency converters at chastotnik.ua are supplied with the manufacturer's official warranty. Our engineers provide free technical consultation for series selection and parameter configuration. Delivery across Ukraine via Nova Poshta — same-day dispatch for in-stock items.

Siemens Sinamics and MicroMaster: Industrial Standard of German Automation

Siemens frequency inverters in our catalog include both the modern modular SINAMICS line and proven MicroMaster drives. Over 220 SKUs are available in stock. The most demanded solutions are compact SINAMICS V20 drives for general applications and modular SINAMICS G120 inverters for complex automation lines integrated via Profinet in TIA Portal.

Main Series and Their Applications

SINAMICS V20 — Cost-Effective Drive for Basic Tasks

Power range 0.12–30 kW, 1×230V and 3×400V supply. Ideal for pumps, fans, compressors, and conveyors. Built-in USS/Modbus RTU interface, easy commissioning, and reliable heat dissipation design.

SINAMICS G120 — Modular Vector Inverter

Power ratings from 0.55 to 250 kW. Features PM240-2 power modules paired with CU240E-2 or CU250S-2 control units. Offers Safety Integrated functions (STO, SS1), sensorless vector control, and native Profibus / Profinet IO connectivity.

MicroMaster 420 / 440 — Legacy Support & Modernization

Classic Siemens series. We maintain stock for maintenance replacement and provide direct migration pathways to current SINAMICS platforms.

Main Advantages

Siemens VFDs deliver outstanding durability with 3C2/3C3 conformal coated electronics, precise low-speed torque control, and seamless integration with SIMATIC S7-1200 and S7-1500 PLCs.

Frequently Asked Questions

How does a frequency inverter work?

The input rectifier turns mains AC into DC, the capacitor link smooths it, and the output IGBTs assemble three-phase AC at the set frequency by PWM. Motor speed follows that frequency. SINAMICS V20 does this with plain U/f control for pumps and fans, while G120 is a modular build with vector control and industrial protocols. MicroMaster 420 and 440 do the same job, but these days they are mostly service replacements for older panels.

Which frequency inverter converts 380 to 220 V?

No drive makes 380 out of 220. A single-phase 220 V input feeds the motor 3×220 V, and that holds for every series. Siemens gives us the largest choice here of any brand, 25 models: SINAMICS V20, MicroMaster 420 and MicroMaster 440 in the 0.75-3 kW band. A 380 V three-phase motor runs from them once the links go to delta, provided the nameplate shows 380/220 V. From 4 kW up, motors are mostly wound for 380/660 V and need three phases.

What is a frequency inverter?

A drive for an induction motor that replaces direct-on-line starting with controlled frequency and voltage. The result: the speed you need instead of one nameplate figure, plus ramp-up and ramp-down over a set time. We stock 226 Siemens models. The backbone is SINAMICS G120 at 0.55-132 kW with 125 models on the shelf, alongside V20 up to 15 kW, G115D for conveyors and the classic MicroMaster units. Prices from UAH 7,200 with VAT.

What is a frequency converter needed for?

So a machine stops living in a full-speed-or-stop world. On pumps and fans, trimming speed instead of a damper cuts consumption directly, while on conveyors the drive delivers the throughput you want and a start gentle enough to spare the gearbox. In harder cases you add feedback, encoder operation and a link to the PLC. Siemens goes where SIMATIC already runs. The reason is simple. The drive has to sit on the same network.

How do I set up a frequency inverter?

On SINAMICS V20 and MicroMaster the logic is the same. Motor nameplate data first: voltage, current, power, frequency, speed. Then minimum and maximum frequency plus acceleration and deceleration times, and only after that the run command source together with the frequency reference source, meaning terminals, keypad or Modbus. V20 ships with built-in pump and fan macros, so basic commissioning happens from the keypad. No laptop. G120 is configured through BOP-2 or Startdrive.

What is a VFD?

Everyday shorthand for a variable frequency drive, the same thing as a frequency converter. Our customers almost always say "an 11 kW drive" or "a drive for a fan" rather than the full term. Same equipment either way. In the Siemens range that means SINAMICS V20, G120, G115D and the older MicroMaster 420/430/440; which series you take depends on motor rating, fieldbus protocol and whether you need a modular housing.