Siemens SINAMICS V20 18.5 kW HO / 22 kW LO 3-Phase VFD 6SL3210-5BE31-8CV0

Siemens SINAMICS V20 18.5 kW HO / 22 kW LO 3-Phase VFD 6SL3210-5BE31-8CV0

The Siemens SINAMICS V20 6SL3210-5BE31-8CV0 is a three-phase-input variable frequency drive intended for adjustable-speed industrial motor systems. It belongs to the SINAMICS V20 basic converter family. The critical selection point is its two manufacturer-defined duty ratings: 18.5 kW High Overload (HO) and 22 kW Low Overload (LO). These figures are not interchangeable because each uses a different continuous output-current basis. This CV0 part has an integrated Class A EMC filter and an integrated braking chopper. A braking resistor is separate equipment and is not confirmed as included.

Electrical Ratings

The drive accepts three-phase 380–480 V AC supply with a manufacturer-listed tolerance of −15%/+10% and 47–63 Hz line frequency. It delivers three-phase output, with the Siemens datasheet showing 400 V IEC and 480 V NEC rating columns. At 400 V its Low Overload motor rating is 22.00 kW with 45.00 A continuous output; its High Overload motor rating is 18.50 kW with 38.00 A continuous output. The NEC 480 V values are 30 HP / 40.00 A (LO) and 25 HP / 34.00 A (HO). Siemens notes that the 480 V current and HP figures apply to 440–480 V. Its datasheet also identifies a 45.00 A inverter current reference (IN). Do not use that reference current as the HO continuous-current value. The documented output frequency range is 0–550 Hz, with a 4 kHz pulse-frequency reference.

Control Modes and Performance

SINAMICS V20 provides basic adjustable-frequency motor control intended for straightforward machinery. The exact available commissioning parameters and control algorithms should be selected using the operating instructions and compatible motor requirements. Siemens specifies 110% of the relevant rated output current for 60 seconds, repeating on a 300-second cycle, for LO duty. For HO duty it specifies 150% for 60 seconds on a 300-second cycle. In applications with demanding starts or intermittent high torque, compare the motor current and acceleration profile to the HO rating; do not apply 150% overload to the 45 A LO continuous rating. Temperature and other installation conditions may require derating.

Communication and Configuration

Integrated communications are USS and Modbus RTU, as identified in the Siemens part-specific datasheet. The drive also provides a built-in basic operator panel (BOP) for local configuration and operation as specified in the Siemens product description. Communication commissioning requires the proper physical wiring, protocol parameters, network addresses, and the relevant Siemens operating instructions. Do not assume an Ethernet interface or an Ethernet-based protocol. The datasheet lists four digital inputs, one relay digital output, one transistor digital output, two analog inputs that may additionally function as digital inputs, and one analog output. These I/O counts help with preliminary system planning; consult the terminal wiring diagrams before connection.

EMC Filter Braking and Built-in Functions

For 6SL3210-5BE31-8CV0, the manufacturer specifies an integrated Class A EMC filter, and Siemens’ commercial description calls this an integrated C3 filter. These terms originate from different manufacturer source contexts; the site installation must still follow the applicable EMC design and wiring requirements. The same datasheet explicitly states that an integrated braking chopper is present. This does not mean a resistor is delivered with the drive or that every braking duty is supported. Size any external braking resistor according to the appropriate Siemens specifications, duty cycle, thermal limits, and enclosure provisions. Do not attribute a functional safety certification or a built-in PLC program to the product without exact documented support.

Installation and Typical Applications

The drive has an FSE frame and IP20 / UL open-type protection. The manufacturer lists dimensions of 245.0 × 264.5 × 209.0 mm (width × height × depth), external-fan cooling, and through-hole, wall, and side-by-side mounting options. The listed installation-altitude reference is 1,000 m. Manufacturer ambient data give a −10 to 60 °C operating range, but the datasheet instructs derating at temperatures of 40 °C or above. Follow the installation manual for required clearances, protective devices, cable cross-sections, thermal management, earthing, and EMC routing. Its 50 m shielded or 100 m unshielded maximum motor-cable lengths are listed in the exact datasheet; permitted lengths and filtering need review for the installation. Technically appropriate applications include conveyor lines, pumps, fans, blowers, mixers, and similar compatible three-phase motor drives. Suitability depends on the load torque profile, supply, motor data, and the correct LO or HO duty selection.

Exact Variant Verification

The complete order number 6SL3210-5BE31-8CV0 should be matched to the nameplate and purchase documentation. In particular, do not transfer frame dimensions, integrated filter status, or braking equipment from the similarly numbered UV0 drive or from smaller V20 CV0 drives. The rated motor power for this part is 18.5 kW in HO mode and 22 kW in LO mode. The CV0 suffix is part of the manufacturer order number; do not assume newer hardware revisions have precisely identical mounting and electrical characteristics. Selection should be checked against the motor’s actual rated voltage, current, thermal duty, enclosure ventilation, and stopping requirements.

Official Manufacturer Links

Official Manufacturer Product Page: https://mall.industry.siemens.com/mall/en/WW/Catalog/Product/6SL3210-5BE31-8CV0

Official Manufacturer Datasheet / Technical Documentation: https://mall.industry.siemens.com/spice/docuservice/docuservice?configid=14&docu.generationtype=VIEW&docu.inittype=MLFB&docu.language.locale1=en&docu.language.locale2=en&docu.mlfb=6SL3210-5BE31-8CV0&docu.viewid=PDF&language=en&region=UA

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