Danfoss VLT FC 302
The VLT AutomationDrive FC 302 comes standard with safe stop functionality suitable for category 3 installations as defined by EN 954-1. This feature prevents a drive from starting accidentally.
This is crucial for applications where preventing uninteded starts are of vital importance. The FC302 terminal 37 can be used as 'safe coast' for this purpose - the stop function satisfies stop category 3 EN 60204-1. Expensive and bulky external components can be omitted, wiring simplified, and down-time minimised with this solution. The safety signals can be transferred via discrete signals wiring (in compact machinery) orsafe bus communication (in extended manufacturing plants). The coupling of Pilz safety relay and AutomationDrive is perfect because AutomationDrive is approved for safety category 3 applications.
The electrical connection is extremely simple - just one wire. AutomationDrive is approved for providing safe stop in category 3 installations without the need for feedback signals from the drive to the safety relay.
When Torque Is the Issue
In all winders the torque required to accelerate and decelerate an application varies with the load. With centre winders the required torque even varies with the dimension of the roll. Torque mode with a high precision torque control is needed.
It is essential in winding operations to fully control the tension of the material being wound. To maintain tangential tension independently of the line speed adn roll diameter, the drive is able to dynamically follow a wide range of torque references.
600 and 690V
VLT AutomationDrive FC302 comes in 600 and 690 V series specially relevant for heavy industries like chemistry, water and gas supply, mining and forestry. 690 V versions are planned up to 1.2MW.
The drive will automatically check and verify if the encoder is malfunctioning. The feedback from the encoder is compared with a calculated speed.
VLT AutomationDrive FC302 runs permanent magnet motors
VLT AutomationDrive FC302 exploits full potential of permanent magnet motors in high dynamic applications.
Fast processors enable it to precisely control position, acceleration and torque.
Click here for a Danfoss FC301 / FC302 Overview Brochure.