VFD Price List: ABB, Schneider, Siemens Compared
A buyer's breakdown of what actually drives VFD pricing across ABB ACS, Schneider Altivar and Siemens SINAMICS drives, from duty class and options to total cost of ownership.
9 min read
Technical
VFD guides
Guides and notes on industrial electrical and automation parts: selection, wiring, settings and ordering.
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- 46
- Latest
VFD Cross-Reference: ACS, Altivar, SINAMICS Replacement
How to cross-reference ABB ACS, Schneider Altivar, and Siemens SINAMICS variable frequency drives by output current, duty rating, and control method instead of nameplate kW.
8 min read
Where to Buy VFDs Online with Fast Delivery
How to verify stock, cross-reference part numbers, and choose an authorized channel when buying ABB, Schneider Electric, and Siemens VFDs online.
8 min read
How to Test a VFD: Step-by-Step
A step-by-step sequence for testing a VFD before start-up: lockout and DC bus discharge, input voltage balance, insulation resistance, DC bus and rectifier checks, output waveform, and a functional load...
8 min read
VFD Overheating and Cooling Fan Failures
Why VFDs overheat, why cooling fans fail, and how to diagnose and prevent overtemperature trips.
9 min read
VFD Fault Codes and Diagnosis Guide
A field guide to reading VFD fault codes across ABB, Schneider and Siemens drives, the five fault families behind most trips, and how to tell drive faults from motor, cable,...
11 min read
Why Does My VFD Trip? Overcurrent, Overvoltage, Overtemp
A field guide to diagnosing VFD overcurrent, overvoltage, and overtemperature trips from the fault log before assuming a drive failure.
11 min read
VFD for CNC and Machine Tools
How VFDs drive CNC spindle motors: the constant-torque to constant-power transition, overload margins for interrupted cuts, and cabling and brand choices for retrofits.
8 min read
VFD for Cranes and Hoists: Regenerative Braking
How to size VFDs for crane and hoist duty: four-quadrant loading, vector control, dynamic and regenerative braking, heavy-duty overload, and STO/brake coordination.
8 min read
VFD for Compressors: Selection Guide
How to select and size a VFD for screw, reciprocating and centrifugal compressors, covering overload rating, turndown limits and energy savings.
9 min read
VFD for Conveyors: Selection and Setup
How to size and set up a VFD for conveyor loads, covering HD overload duty, breakaway torque, control method, braking and cable length.
9 min read
VFD for Fans and HVAC Systems
How VFDs cut HVAC fan energy costs via the fan affinity laws, right-size to Normal Duty, and choose ABB, Siemens, or Schneider drives.
10 min read
VFD for Pumps: Setup and Energy Savings
How a VFD saves energy on centrifugal pumps via the affinity laws, plus duty rating, PID/multi-pump control, dry-run protection, and sizing.
10 min read
Best VFD Brands for Industrial Applications Ranked
A ranked comparison of ABB, Schneider Electric, and Siemens VFD brands by control method, overload rating, fieldbus support, and total cost of ownership, plus where budget alternatives fit.
10 min read
ABB ACS580 vs ACS880: General Purpose vs Industrial
ABB ACS580 general-purpose and ACS880 industrial VFDs share Direct Torque Control, but differ in overload class, regen capability and multidrive expansion.
9 min read
Siemens SINAMICS V20 Basic Drive: Full Review
A technical review of the Siemens SINAMICS V20 entry drive: power range, V/f-only control, communication, and where it wins or loses against G120C.
8 min read
Siemens SINAMICS G120 vs G120C: Which Compact Drive
A technical comparison of the modular Siemens SINAMICS G120 and the fixed-housing G120C, covering control methods, safety options, fieldbus support and where each compact drive fits.
8 min read
Schneider Altivar Machine ATV340: Full Review
A technical review of the Schneider Altivar ATV340 machine drive: power range, control dynamics, safety, communication, and overload ratings for OEM machine builders.
9 min read
Schneider Altivar Drives: Full Range Review
An engineering-level review of every active Schneider Altivar VFD series, from the ATV12 micro drive to the cabinet-power ATV930, mapped by duty class, control method, and legacy replacement path.
9 min read
ABB ACS Drives: Full Range Review (ACS180 to ACS880)
A working comparison of ABB's ACS drive lineup, from the entry ACS180 machinery drive to the ACS880 industrial DTC flagship, plus the ACH580 and ACQ580 application variants.
9 min read
ABB ACS580 vs Schneider ATV630 vs Siemens G120 VFD
A side-by-side comparison of the ABB ACS580, Schneider ATV630 and Siemens G120 VFDs on control method, overload duty rating, enclosure and fieldbus support.
9 min read
VFD Sizing for Constant vs Variable Torque Loads
How to match a VFD's Normal Duty or Heavy Duty overload rating to constant-torque and variable-torque loads, with the sizing steps, overload-margin formula, and derating factors that keep a drive...
10 min read
VFD Cable Sizing and Motor Cable Length Limits
How to size VFD motor cable for both ampacity and PWM reflected-wave voltage, and when cable length forces a dV/dt reactor or sine-wave filter.
9 min read
How to Program a VFD: Basic Parameter Setup
A practical guide to VFD parameter setup: motor nameplate data, control mode selection, ramp times, I/O assignment and protection settings for correct first-time commissioning.
10 min read
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