How to Choose the Right Variable Frequency Drive for Your Application

By ISS Engineering Team · Published 22 May 2026 · Last Technical Review: 21 July 2026 · 1 min read

Industrial Supply Syndicate Engineering Team ✓ Delta VFD specialists · ✓ Based in Kolkata · ✓ 10+ years industrial supply

Step 7: Compare Delta VFD Series

Parameter	EL-W	EL	MS300	MH300	C2000 Plus
Power Range	0.2–2.2 kW	0.2–7.5 kW	0.2–37 kW	0.75–55 kW	0.75–630 kW
Input Supply	1-phase 230V / 3-phase 400V	1-phase 230V / 3-phase 400V	1-phase 230V / 3-phase 400V	3-phase 400V	3-phase 400V
Motor Output	3-phase 230V or 400V *	3-phase 230V or 400V *	3-phase 230V or 400V *	3-phase 400V	3-phase 400V
Control Mode	V/f	V/f, SLV	V/f, SLV, FOC	V/f, SLV, Closed-loop Vector **	V/f, SLV, Closed-loop Vector **
Overload Capacity	120% for 60s	120% for 60s	150% for 60s	200% for 3s	150% for 60s
PID Control	✓	✓	✓	✓	✓
Built-in PLC	Basic	Basic	✓	✓	✓
Brake Chopper	Selected models	Selected models	✓	✓	External / selected models
EMC Filter	Selected models	Selected models	Selected models	Selected models	Optional
Communication	Modbus RTU	Modbus RTU	Modbus RTU + optional fieldbus	Modbus RTU + optional fieldbus	Modbus RTU + optional fieldbus
Typical Applications	Small pumps, fans, blowers	General-purpose machinery	Pumps, fans, conveyors, compressors	Packaging, textile, machine tools, winders	Crushers, extruders, heavy industrial
Recommended For	Small workshops & utilities	General OEM machines	Most industrial applications	High-performance automation	Heavy-duty industrial processes

* Output voltage depends on selected model (230V or 400V class).
** Closed-loop vector requires encoder feedback option where applicable.

Quick Selection Guide by Application

Use this table to identify the recommended Delta VFD series for common industrial applications in India.

Application	Recommended Series	Key Reason
Domestic water pump (single-phase)	EL-W	True single-phase input, up to 2.2kW
Borewell / submersible pump	ME300 or MS300	PID for pressure control, sleep/wake function
HVAC fan / cooling tower fan	MS300	Variable torque, energy saving, built-in PID
Conveyor belt	MS300	Constant torque, reliable speed control
Mixer / agitator	MH300	High starting torque, 200% overload for 3s
Compressor	MS300 / MH300	Constant torque, high overload capacity
Packaging machine	MH300	Precise positioning, fast dynamic response
Textile machinery	MH300	Smooth speed regulation, closed-loop option
CNC machine tool / spindle	MH300	Closed-loop vector, ±0.01% speed regulation
Extruder / press	C2000 Plus	Constant torque, large kW ratings up to 630kW
Crusher / heavy mill	C2000 Plus	Heavy-duty overload, high power industrial drive

General guidance only. Always verify against motor nameplate data. Contact our engineers for specific recommendations.

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