Toshiba VF-FS1 Inverter — Heavy-Duty Overload Capacity

Toshiba VF-FS1 inverter handles 0.4–30kW motors with dual overload ratings: 110% for 1 minute continuous and 180% for 2 seconds peak. This three-phase 200V legacy drive delivers the overload margin Malaysian heavy industries require for high-inertia starts and transient load spikes.

Key Features and Performance

Toshiba VF-FS1 distinguishes itself through exceptional overload handling. The 180% peak overload at 2 seconds absorbs the torque demands of crusher starts, press engagements, and conveyor jam clearing — events that trip standard drives rated at only 150%. The sustained 110% for 1 minute provides continuous headroom for processes with cyclically varying loads.

The 0.4–30kW power range covers a wide span of three-phase 200V motor applications. V/f and vector control modes accommodate both general-purpose and precision speed control requirements. Auto-tuning measures connected motor characteristics for optimal vector performance without manual parameter entry.

VF-FS1 incorporates PID control for closed-loop process regulation, enabling direct pressure, flow, or temperature control without an external controller. This reduces system component count and simplifies wiring — a practical benefit for Malaysian facilities where panel space and installation labour carry significant costs.

Built-in dynamic braking capability handles deceleration of moderate-inertia loads. For heavier applications, external braking resistor connections are provided. Programmable acceleration and deceleration curves — including S-curve profiles — prevent mechanical shock during speed transitions.

Multiple communication options including RS-485 Modbus allow integration with factory automation systems. Multi-function I/O terminals support flexible control configurations tailored to specific application requirements.

Technical Specifications

Applications in Malaysian Industry

Toshiba VF-FS1 inverter serves Malaysian industries where overload resilience determines operational reliability. Rubber processing plants across Kedah and Perak use VF-FS1 for mill roller drives that encounter hard load impacts during sheet processing. Metal stamping workshops in the Klang Valley rely on the 180% overload capacity for press feed mechanisms.

Wood processing facilities in Sarawak and Sabah deploy VF-FS1 for saw mill motor control where log engagement creates sudden load spikes. Water infrastructure projects throughout Malaysia use the PID function for direct pump pressure control. These applications align with NIMP 2030 goals of modernising traditional Malaysian industries through automation and energy efficiency.

Toshiba VF-FS1 vs Alternatives

Toshiba VF-FS1 provides 180% peak overload — exceeding the 150% rating common among drives in this class. This additional overload margin eliminates the practice of oversizing drives by one frame to handle peak loads, reducing both capital cost and physical footprint. The three-phase 200V input is specific to certain Malaysian installations; for 400V systems, alternative Toshiba models are recommended. As a legacy product, VF-FS1 suits replacement and maintenance scenarios.

Why Source from Flextech Industrial

Flextech Industrial supplies Toshiba VF-FS1 inverter units in Malaysia from maintained legacy inventory. Our engineers assist with drive sizing to ensure overload ratings match actual application demands. For new installations where VF-FS1 is no longer the optimal choice, we recommend current-production alternatives with equivalent or superior performance. Contact Our Team for VF-FS1 availability and Get a Quote for your specific requirements.

Frequently Asked Questions

What overload capacity does the Toshiba VF-FS1 provide?

Toshiba VF-FS1 delivers 110% rated current for 60 seconds and 180% rated current for 2 seconds. This dual-rated overload capacity handles both sustained heavy loads and transient peak demands without tripping the drive.

Can the VF-FS1 control pump pressure directly?

VF-FS1 includes built-in PID control that regulates pump speed based on a pressure feedback signal. Connect a pressure transmitter to the analog input, set the PID parameters, and the drive maintains target pressure without an external PLC or controller.

Is the Toshiba VF-FS1 still manufactured?

Toshiba VF-FS1 is a legacy product no longer in active production. Flextech Industrial in Malaysia maintains stock for replacement requirements. Early procurement is recommended as inventory depletes. Contact Our Team for current stock levels.

What motor voltage does VF-FS1 support?

VF-FS1 operates on three-phase 200V input and output. Malaysian installations using 200V motor circuits can connect directly. For 415V systems standard in Malaysia, Toshiba’s 400V-class drives such as the VF-AS1 or VF-AS3 are the appropriate alternatives.

How does VF-FS1 compare to VF-S11 for heavy-duty applications?

VF-FS1 offers 180% peak overload versus VF-S11’s 200% torque at 1Hz — different strengths for different needs. VF-FS1 excels with transient mechanical overloads, while VF-S11’s power vector mode provides superior low-speed torque. Request Pricing from Flextech Industrial for application-specific recommendations.