Siemens SINAMICS V20 6SL3210-5BE21-5CV0 1.5 kW 3-Phase VFD

Siemens SINAMICS V20 6SL3210-5BE21-5CV0 1.5 kW 3-Phase VFD

Electrical Ratings

The Siemens SINAMICS V20 6SL3210-5BE21-5CV0 is a compact variable-frequency drive for three-phase motor speed regulation in an industrial electrical system. Its nominal motor power is 1.5 kW in both Low Overload (LO) and High Overload (HO) operating ratings; the manufacturer also lists 2.00 hp for the NEC 480 V basis. This is the exact CV0 ordering variant, not the newer CV1 replacement. The supply is three-phase AC, with a nominal range of 380–480 V and manufacturer-listed tolerance of −15% to +10%. The line-frequency range is 47–63 Hz. The output is three-phase AC with 400 V IEC and 480 V NEC nominal rating bases. Output voltage is controlled by the inverter and is constrained by supply and control conditions. Continuous rated output current is 4.10 A for LO, HO and IN ratings. The datasheet gives an output-frequency setting range of 0–550 Hz; that figure is an inverter capability, not a blanket motor or machinery speed limit.

Control Modes and Performance

Siemens designed the SINAMICS V20 family for straightforward variable-speed operation in ordinary machine-drive applications. Parameterized speed control, acceleration and deceleration ramps, preset frequency selection and drive protective functions are documented in the family operating instructions; select the correct control setup and motor data before commissioning. For this exact model, the datasheet states two distinct overload profiles: Low Overload is 110% of rated output current for 60 seconds with a 300-second cycle, and High Overload is 150% for 60 seconds with a 300-second cycle. Those temporary conditions are not continuous current ratings. Motor loading, ambient temperature, switching frequency and installation conditions may require derating. A properly selected external motor-protection and supply-protection scheme remains essential.

Communication and Configuration

The documented integrated fieldbus protocols are USS and Modbus RTU. These are communication protocols, not evidence of native Ethernet connectivity. The Siemens product listing describes a built-in Basic Operator Panel (BOP), allowing local parameter setting and operation. It also identifies 4 digital inputs, 2 digital outputs, 2 analog inputs and 1 analog output for this order number. Communication wiring, address selection, serial-port configuration and parameter assignments should be taken from the official operating instructions. Do not assume that an optional network card, external operator station or programming accessory is supplied in the package.

EMC Filter and Braking Configuration

The exact CV0 variant includes an integrated EMC filter. The Siemens technical datasheet identifies the integrated filter as Class A; the product listing describes the integrated filter as C3. These two labels are retained here in their respective documentation contexts and are not independently asserted as interchangeable compliance certifications. Proper grounding, shielding, cable routing and any required additional EMC measures are still important for site compliance. Critically, the 6SL3210-5BE21-5CV0 does not have the integrated braking unit identified on the 6SL3210-5BE21-5CV1 successor. It would be incorrect to copy that newer feature onto CV0 or to state that a braking resistor is included. Braking performance and requirements should be engineered for the actual load and stopping cycle.

Installation and Applications

The inverter is IP20 / UL open type, frame size FSA, and measures 90 × 166 × 145.5 mm (width × height × depth). It is intended for protected installation inside an appropriate electrical control environment, not direct exposure to water or dust. Siemens lists wall and side-by-side mounting for the family, subject to required ventilation and thermal rules. The older FSA 1.5 kW model uses a cooling fan; installer clearance and operating conditions must be checked in the instructions. The technical datasheet notes installation altitude of 1,000 m as its reference and up to 95% maximum operating relative humidity. It lists maximum motor-cable lengths of 10 m shielded and 50 m unshielded for the documented configuration; these limits should be reviewed together with EMC and protective-device requirements. Suitable engineered uses can include small conveyors, centrifugal pumps, fans, mixers and comparable general-purpose machine drives where the motor and operating current fit the rating. Actual load inertia, motor type, acceleration and stopping requirements can change suitability. The specified output frequency alone does not demonstrate compatibility with every high-speed machine.

Exact Variant and Lifecycle

The manufacturer part number 6SL3210-5BE21-5CV0 distinguishes this 1.5 kW three-phase-input model with built-in C3 filtering from unfiltered UV0 alternatives and other power ratings. Siemens lists the model as phased out effective 10 February 2025 and identifies 6SL3210-5BE21-5CV1 as the successor. The replacement retains many headline electrical attributes but lists an integrated braking unit. Replacement decisions must check physical fit, input and output ratings, filter, braking, terminal connections and installation requirements, rather than treating the successor as identical in all respects. For product identification and replacement compatibility, always match the complete order number.

Manufacturer Documentation

Official Manufacturer Product Page: https://mall.industry.siemens.com/mall/en/cn/Catalog/Product/6SL3210-5BE21-5CV0

Official Manufacturer Datasheet / Technical Documentation: https://mall.industry.siemens.com/mall/Document/GetDocumentBasedOnCode?code=aHR0cHM6Ly9tYWxsLmluZHVzdHJ5LnNpZW1lbnMuY29tL3NwaWNlL2RvY3VzZXJ2aWNlL2RvY3VzZXJ2aWNlP2NvbmZpZ2lkPTE0JmRvY3UubWxmYj02U0wzMjEwLTVCRTIxLTVDVjAmZG9jdS5pbml0dHlwZT1NTEZCJmRvY3UuZ2VuZXJhdGlvbnR5cGU9VklFVyZkb2N1LnZpZXdpZD1QREYmcmVnaW9uPUlOJmxhbmd1YWdlPWVuJmRvY3UubGFuZ3VhZ2UubG9jYWxlMT1lbiZkb2N1Lmxhbmd1YWdlLmxvY2FsZTI9ZW4%3D

Official Operating Instructions: https://support.industry.siemens.com/cs/attachments/109811111/V20_op_instr_0522_en-US.pdf

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