High-Performance Synchronous Control Inverter
Power Converter
Motor
VF66AD／SDSInverters for Synchronous Control System
Equipped with VF66SV high-accuracy draw control function and synchronous position control function.
This is a high-performance model of the ever-evolving VF66 Series.
Features and Functions
VF66AD Absolute Synchronous Control
We have practically applied absolute synchronous control and delivered many commercial rotary printing press drive systems employing this control. Absolute synchronous control is used to run rotation commands and provide motor rotation feedback using numerical data. The SHPC-175-Z is used for the rotation command module, and an absolute encoder is used for the motor to achieve a resolution of 25 bits per motor rotation.
| Absolute rotation command module |
|---|
| SHPC-175-Z |
| Rotation position command and rotation speed command transmission with Toyo Denki's proprietary synchronization communication |
| High-accuracy draw, for synchronous control |
| Minimal delay between sections during acceleration and deceleration |
| RS422 |
VF66SDS Incremental Synchronous Control
We have practically applied incremental synchronous control and delivered many newspaper rotary printing press drive systems employing this control. VF66SDS synchronous control employs a PG emulator module which generates A-, B-, and Z-phases for commands. The SHPC-172-Z is used for the PG emulator module, and an incremental encoder is used for the motor to achieve a resolution of 76,800 pulses per motor rotation.
| PG emulator module |
|---|
| SHPC-172-Z |
| Generation and output of rotation position commands based on A-, B-, and Z-phase signals |
| High-accuracy draw, for synchronous control |
| Little delay between sections during acceleration and deceleration |
| RRS-422 or optical fiber |
Example of Application to Sectional Drive System
This is an example of application of the VF66AD to a shaft-less rotary printing press. Speed control accuracy of ±0.001% has been achieved, and sectional drive with higher precision than ever before has been realized.
The waveform in the lower area shows the motor speed command, and the waveform in the upper area shows the transition in rotation position error ΔP.
Specifications
| Control system | Vector control with speed sensor |
|---|---|
| Capacity | 200 V class: 50 to 180 kW 400 V class: 50 to 1,000 kW |
| Power rating | Three-phase 200 to 220 V ±10% Three-phase 380 to 460 V ±10% 50/60 Hz ±5% |
| Output frequency | 0.1 to 400 Hz |
| Overload capacity | 150% for 1 minute, 200% for 3 seconds (150% max. at 75 kW or more when cold) |
| Network | OPCN-1 |
| Input signal | Analog: 0 to 10 V/±10 V (2CH), Multi-function inputs: 8 |
| Output signal | Analog: 0 to ±10 V (2CH), Multi-function outputs: 3 |
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