POSTMA & POSTMA

(PTY) LTD.

Vectrue Technology

 

This technology was developed by WEG for variable speed applications with three-phase AC induction motors providing the following advantages:

 

1. V/F or Vector Control modes via parameter selection;
2. True Flux Vector Control in either open or closed loop vector modes;
3. True Open Loop Vector Control with high torque and fast dynamic response, even at very low speeds;
4. Self-tuning for automatic drive set-up to match the drive to motor and load in vector modes.

Optimal Braking

 

For applications that require reduced braking times or to stop high inertia loads, traditional inverters use a Dynamic Braking scheme, where the excessive kinetic energy regenerated to the DC Link is dissipated as heat in a dynamic braking resistor connected to the drive.

 

The CFW-09 Vector Modes incorporate the Optimal Braking feature, which allows a sufficient braking performance to handle most applications that so far needed dynamic braking.

 

This innovation allows high dynamic performance drive systems with braking torques of about 5 times of typical DC braking.

Advantages

 

1. High performance RISC 32 bit microprocessor;
2. Detachable SMART keypad with dual display (LCD and LED);
3. Wide power range: 1 … 600HP (up to 1500HP with parallel configuration);
4. Variable and Constant Torque ratings;
5. Degree of Protection NEMA 1 / IP 20 standard up to 132 kW, IP 20 up to 330 kW and NEMA 4X / IP 56 in stainless steel enclosure up to 10HP;
6. Simplified installation and programming;
7. Oriented start-up;
8. Through surface mounting option;
9. On/Off-line PC programming with SuperDrive software (Optional);
10. DC bus connections available;
11. Fieldbus network communication:  Profibus DP or DeviceNet (optional).  Modbus RTU (built-in) also available.
12. International certifications including UL and cUL, CE, C-Tick and IRAM.