Drive selection guide
SINAMICS V20 vs G120: selecting a drive for the real duty
Compare the two SINAMICS platforms by load, overload, communication, safety, modularity, environment and lifecycle.
Evaluate V20 for suitable basic-performance applications and G120 where modular configuration, broader communication, safety options or a more demanding machine architecture is required. Final selection uses motor current and duty plus the exact option and accessory set.
01What is the direct answer for this drive selection guide?
Evaluate V20 for suitable basic-performance applications and G120 where modular configuration, broader communication, safety options or a more demanding machine architecture is required. Final selection uses motor current and duty plus the exact option and accessory set.
02What information should a buyer prepare for drive selection guide?
Prepare motor nameplate and cable length, load torque and duty cycle, speed range and control method, overload, braking and restart requirements, i/o, fieldbus and safety functions. Missing information should be recorded as an assumption before release.
03Which decisions can change the result?
Review load and overload, motor and supply, control performance, communication. The complete project and article-number context determines the final answer.
Drive selection guide framework
Six checks for this decision
Apply these checks to sinamics v20 vs g120: selecting a drive for the real duty so assumptions are visible before the BOM, drawing, procurement release or shutdown plan is approved.
Load and overload
Classify variable- or constant-torque duty, starting demand, acceleration, shock loads and the required overload profile.
Motor and supply
Confirm voltage, rated current, frequency, speed range, motor type, earthing system and supply quality.
Control performance
Define speed accuracy, torque behavior, flying restart, braking, encoder or technology requirements.
Communication
List hardwired I/O, operator controls, fieldbus, diagnostics and the PLC data required for operation and service.
Safety and availability
Specify safety functions, bypass philosophy, restart behavior and whether one drive failure may stop the process.
Installation
Check enclosure losses, EMC, cable length, reactors or filters, ambient, altitude, dust and maintenance access.
Buyer checklist
Inputs for drive selection guide
- Motor nameplate and cable length
- Load torque and duty cycle
- Speed range and control method
- Overload, braking and restart requirements
- I/O, fieldbus and safety functions
- Enclosure and EMC conditions
Common mistakes
Risks in this decision
- Selecting only by motor kW
- Leaving overload and braking undefined
- Ignoring losses when sizing the enclosure
- Assuming a family name defines the communication interface
Common Drive selection guide searches
Answers before the technical release
These answers summarize the guide. Final compatibility, ratings, accessories and availability still require the exact article number and current source information.
What is the direct answer for this drive selection guide?
Evaluate V20 for suitable basic-performance applications and G120 where modular configuration, broader communication, safety options or a more demanding machine architecture is required. Final selection uses motor current and duty plus the exact option and accessory set.
What information should a buyer prepare for drive selection guide?
Prepare motor nameplate and cable length, load torque and duty cycle, speed range and control method, overload, braking and restart requirements, i/o, fieldbus and safety functions. Missing information should be recorded as an assumption before release.
Which decisions can change the result?
Review load and overload, motor and supply, control performance, communication. The complete project and article-number context determines the final answer.
What are the common mistakes in drive selection guide?
Selecting only by motor kW; Leaving overload and braking undefined; Ignoring losses when sizing the enclosure; Assuming a family name defines the communication interface.
How should the final answer be verified?
Confirm current ratings, compatibility, lifecycle, mandatory accessories and application limits against the complete Siemens article number and cited manufacturer information before quotation or technical release.
Continue the decision
Pages related to drive selection guide
Technical references
Sources for this guide
Ratings, compatibility and lifecycle details referenced in sinamics v20 vs g120: selecting a drive for the real duty must be verified again against the exact article number at quotation.
Apply this guide