Siemens SINAMICS V20 6SL3210-5BE21-1UV1 1.1 kW 3-Phase VFD

Siemens SINAMICS V20 6SL3210-5BE21-1UV1 1.1 kW 3-Phase VFD

The Siemens SINAMICS V20 6SL3210-5BE21-1UV1 is a compact variable-frequency drive for controlling the speed of a suitably rated three-phase AC motor. This particular 1.1 kW model belongs to the 380–480 V three-phase supply family and is supplied without an integrated EMC filter. It is an FSA-frame, IP20 / UL open-type converter with an integrated braking chopper. It includes a built-in basic operator panel (BOP) and USS / Modbus RTU serial communication. These details apply to the UV1 ordering code and should not be copied indiscriminately to UV0 or filtered CV variants.

Electrical Ratings

This drive accepts three-phase 380–480 V AC supply with a published tolerance of −15% to +10% and a line frequency of 47–63 Hz. It delivers three-phase output with manufacturer-listed nominal ratings of 400 V (IEC) and 480 V (NEC), subject to the connected supply and operating conditions. Both Low Overload (LO) and High Overload (HO) rated motor power are 1.10 kW; Siemens also lists 1.50 hp, with an accompanying datasheet footnote limiting stated HP and output-current ratings to the 440–480 V range. Rated output current is 3.10 A for LO, HO and nominal IN. Output frequency is adjustable from 0 to 550 Hz; that maximum is an electronic capability, not a general motor-speed recommendation.

Control Modes and Overload Performance

The SINAMICS V20 family is intended for straightforward motor-speed regulation and commissioning. The exact-model datasheet specifies an LO overload capability of 110% of rated output current for 60 seconds in a 300-second cycle. HO overload is 150% for 60 seconds in a 300-second cycle. These temporary overload allowances are not continuous-current ratings, and selection must account for motor loading, thermal behavior, actual line voltage and any required derating. Do not assume closed-loop motor feedback or advanced servo positioning from the presence of a drive controller.

Communication and Configuration

Siemens lists integrated USS and Modbus RTU communications for this specific part number. The manufacturer’s product listing states four digital inputs, two digital outputs, two analog inputs and one analog output, together with a built-in basic operator panel. These are integrated control resources; a separate PLC or communications adapter is not implied to be supplied. Integrators should verify electrical terminal details, serial wiring, addressing and parameter settings in the current Siemens operating instructions before connecting automation equipment. Where remote control is required, protocol support must be distinguished from a physical Ethernet port or an Ethernet-based industrial protocol.

Braking, EMC and Protection

The 6SL3210-5BE21-1UV1 is unfiltered: Siemens specifies no integrated EMC filter. An installation may need additional suppression measures depending on the site, wiring and applicable EMC obligations. Importantly, the UV1 revision has an integrated braking chopper, unlike the older UV0 model. A braking resistor is a separate component unless independently confirmed in a specific supply package; resistor selection, duty, wiring and protective requirements must be checked in Siemens documentation. IP20 / UL open-type construction does not mean weatherproof or washdown-safe protection and ordinarily calls for suitable panel or enclosure integration.

Installation and Operating Conditions

Siemens identifies FSA frame size with mechanical dimensions of 90 × 166 × 145.5 mm (width × height × depth), 1.00 kg net weight, external-fan cooling and wall or side-by-side mounting. Published operating temperature is −10 to 60 °C, with derating required from 40 °C upward. The cited installation altitude is 1,000 m and the maximum operating relative humidity is 95%. The exact-model datasheet quotes maximum motor cable lengths of 10 m shielded and 50 m unshielded. These limits matter when selecting cabinets, routes and filters; they should be reassessed with the complete machine design and current operating manual.

Typical Applications

When matched to a compatible motor and properly engineered load, this VFD can be considered for compact conveyors, dosing equipment, fans, pumps and light material-handling mechanisms. Suitability depends on 1.1 kW motor sizing, current demand, starting and peak torque, duty cycle, environmental exposure and braking energy. Repetitive deceleration or high-inertia applications may require a correctly selected external braking resistor and thermal protection. These are technically appropriate examples, not a promise that every machine or motor is approved or that specific energy savings are guaranteed.

Exact Variant Verification

The manufacturer part number is 6SL3210-5BE21-1UV1. The suffix UV1 distinguishes this unfiltered revision with integrated braking hardware from the older UV0 version. The filtered CV0 / CV1 variants have different EMC equipment; a CV0 unit must not automatically inherit the UV1 braking specification. The Siemens model listing and exact-part technical datasheet agree on 1.1 kW, 3.10 A, three-phase 380–480 V input, and FSA construction. The datasheet explicitly qualifies its stated output current and horsepower ratings for the 440–480 V range, so lower-voltage applications require reference to the applicable Siemens derating guidance.

Manufacturer Documentation

Official Manufacturer Product Page: https://mall.industry.siemens.com/mall/en/uk/Catalog/Product?SiepCountryCode=GB&mlfb=6SL3210-5BE21-1UV1

Official Manufacturer Datasheet / Technical Documentation: https://mall.industry.siemens.com/mall/en/EN/Catalog/Product/teddatasheet/?caller=Mall&format=PDF&language=en&mlfbs=6SL3210-5BE21-1UV1

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