High Precision -
             Unsurpassed Performance

The VF-AS1 is an advanced inverter drive for the most demanding, high end industrial machine and equipment applications. It performs high torque, quick response, high accuracy and excellent environmental capability. The VF-AS1 designed to operate under extreme environments, delivering high precision controls. Yet the VF-AS1 is easy to operate with "my function".

• The VF-AS1 offers (both sensorless and feedback) vector control providing heavy duty, powerful performance with high precision control. On drives provided with a sensor, high-torque operation of 200%* from zero velocity is possible, achieving a speed control range of 1:1000. Using the new Motor-Over-Flux-Braking-Technology, the AS1 can provide as much as 30% of its rated power for use in stopping a heavy or high inertia load without the use of a dynamic brake resistor.
  
  Motor constants required for vector control can also be easily set by auto-tuning to achieve 1:120 speed control. The VF-AS1 features a robust structure that reduces the negative effects and influence of motor temperature.

• High-speed response frequencies of 40 Hz without sensor and 50 Hz with sensor to maintain fixed speed in response to sudden changes in load. Modifying software enables high-frequency output up to 1000Hz, which is ideal for spindle rotation of woodworking and metalworking machinery.

• Toshiba’s "My Function" programming set allows the VF-AS1 to operate as a simple PLC. Basic logic function programming can now be done directly on the VF-AS1.

• High-frequency noise is drastically reduced on models with built-in noise filters. Built-in noise filters are ideal for sites such as commercial facilities, offices and factories where attention must be paid to peripheral devices. Models with built-in EMC noise filter comply with the European EMC Directive as individual inverter units. Savings in space and wiring have been achieved by incorporating the filter in the panel. 

• The VF-AS1 drive is designed to operate under extreme environments. It can operate in temperatures up to 122°F without de-rating and can be configured for use in temperatures of up to 140°F. The VF-AS1 is also designed to be used in a sealed cabinet design which allows integrators to mount the VF-AS1's heat-sink external to the drive cabinet for simple and efficient cooling of the unit.

• The modular construction of the VF-AS1 allows the unit to be installed into nearly any application quickly and easily. The laminated bus plane technology used in the VF-AS1 means a reduced component count, better reliability and easier service. The removable control terminal board allows you to use the control wiring when replacing the inverter, which makes maintenance easier.

• Dedicated advanced functions and features for lifting/holstering applications are implemented in the VF-AS1. The brake sequence function measures the timing with braking by an external motor to achieve smooth operation at start and stop of braking operation. The light-load, high-speed function automatically increases the speed when operating light loads according to the lifting load to improve conveyance efficiency. A learning function for setting and storing to memory required parameters while performing actual operations is also provided to facilitate adjustments. The VF-AS1's built-in transistor used for dynamic braking is rated up to 160 kW.

• Based on Toshiba’s unified programming philosophy, the VF-AS1 can be operated with little or no programming. At the same time, the AS1 maintains one of the most expansive parameter sets in the industry, allowing you to fine tune the drive for your specific application.
  　
• Issues with your application will no longer be a mystery with VF-AS1's fault tracing algorithm. By accessing the fault tracing parameters, you can isolate exactly where the trouble is located

• The AS1 is designed to accommodate multiple, stackable option cards that can be mounted underneath the unit’s keypad quickly and easily. The drive can accept two inputs from external communication units via the two onboard RS 485 communication ports.

• Compliance with global standards including CE, CSA, UL, C-tick, GOST, NOM117

• Offset Printing Machine
• Metal Working Machine - Winders
• Semiconductor Manufacturing Equipment - Chip Cutters
• Hoisting Equipment - Overhead Travelling Crane

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