Yaskawa Electric America provides Industrial Control and Automation products to markets in the Americas. Yaskawa is the world's largest manufacturer of ac drives and motion control products, including adjustable frequency drives servo amplifiers, servomotors, machine controllers, and motion controllers.
Specifications and Features for V7 Drive
The V7 Drive is a high performance AC drive for induction motors, providing low motor noise and high starting torque. The V7 provides two control methods; V/f and open loop vector control for precision speed regulation applications. In addition to good speed regulation, open loop vector control also provides higher torque at lower speeds. The V7 is intended for constant torque applications, with current overload rating of 150% for 60 seconds.
The V7 is fully featured and compact. The digital operator provides 4-digit LED status display with a built-in analog speed potentiometer, as well as digital programming of almost 200 parameters. The digital pulse train input provides a precise frequency input, and is the perfect solution for speed / follower applications. The seven standard multi-function inputs can be programmed to allow for 17 preset speeds. The V7 also has an analog input, a multi-function output, two multi-function open collector outputs, and an analog output as standard.
The V7 is ideally suited for applications such as conveyors, grinders, centrifuges, pumps, fans, blowers, machine tools, packaging, food processing, and commercial laundry.
One of the outstanding options for the V7 is DriveWizard. This software enables upload, download, and monitoring of parameters. Another software, CASE, can add functionality to the drive by reconfiguring drive defaults, establishing presets for OEM equipment, and by eliminating peripheral controls and PLCs.
A RS-485 Modbus RTU communication port is standard, allowing 32 nodes on a single network. Plug-in interface option boards enable the drive to communicate with all the major networks, such as DeviceNet, Profibus-DP, and others. The option board installs directly on the drive control board via simple snap-in connectors.
A version of this drive called V7N is available with DeviceNet embedded in the drive control board, reducing cost and installation time.
Another version of this drive called V74X is available with integral NEMA 4X/12 enclosure for dusty and wet environments.
The V7 is provided in a NEMA 1 enclosure from 1/8 to 10 HP at 230 VAC and 1/2 to 10 HP at 460 VAC. (This V7 was previously named GPD 315/V7)
Peformance Features
Ratings: 1/8 to 10 HP at 230 VAC, 1/2 to 10 HP at 460 VAC
Constant torque overload rating: 150% for 1 min., 200% for 30 Sec. (250% peak)
DC injection braking, ramp to stop
Electronic reversing
Adjustable accel/decel: 0.01 to 6000 seconds
Controlled speed range: 40:1(1) 100:1(2)
Speed Regulation ± 0.5 to 1% with slip compensation(1) ± 0.2%(2)
Drive efficiency: 95%
Displacement power factor: 0.98
Output frequency: .1 to 400 Hz
Frequency resolution: 0.01 Hz with digital reference, 0.06 / 60 Hz with analog reference
Frequency accuracy: 0.01% with digital command, 0.5% with analog command