Vacon NX series User Manual

Also see for NX series: User manual Applications manual Maintenance manual Operating guide Applications manual

Contents

Vacon NX series User Manual Manual pdf 8 page image

1vacon • 6 SafetyLocal contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/1.1 Warnings1.2 CautionsDo not touch the components of the power unit, LCL filter or pre-charging circuit whenthe drive is connected to Mains, or the DC-link when DC-link is powered. The compo-nents are live when the drive is connected to mains or the DC-link is powered. A con-tact with this voltage is very dangerous.Do not touch the line-in terminals U, V, W or the DC terminals when the drive is con-nected to mains or DC-link when DC-link is powered. These terminals are live whenthe drive is connected to mains or DC-link when DC-link is powered, also when thesystem does not operate.Do not touch the control terminals. They can have a dangerous voltage also when thedrive is disconnected from mains or DC-link when DC- link is powered.Before you do electrical work on the drive, disconnect the drive from the mains andmake sure that the system has stopped. Lock out and tag out the power sources to thedrive. Make sure that no external source generates unintended voltage during work.Note that also the load side of the drive can generate voltage.Wait 5 minutes before you open the cabinet door or the cover of the AC drive. Use ameasuring device to make sure that there is no voltage. The terminal connections andthe components of the drive can be live 5 minutes after it is disconnected from themains and the system has stopped.Before you connect the drive to mains, make sure that the front cover and the cablecover of the drive are closed. The connections of the AC drive are live when the drive isconnected to mains.When there is a power-up, a power break or a fault reset, the system starts immedi-ately if the start signal is active, unless the pulse control for Start/Stop logic isselected. If the parameters, the applications or the software change, the I/O functions(including the start inputs) can change.Wear protective gloves when you do mounting, cabling or maintenance operations.There can be sharp edges in the AC drive that can cause cuts.Do not move the AC drive, LCL filter or the optional components. Use a fixed installa-tion to prevent damage to the drive.Do not make measurements when the AC drive is connected to mains. It can causedamage to the drive.Make sure that there is reinforced protective ground connection. It is mandatory,because the touch current of the AC drives is more than 3.5 mA AC (refer to EN61800-5-1). See Chapter 1.3 "Grounding and earth fault protection".Before you do any work on the Common DC Bus, make sure that the system isgrounded.9000.emf9000.emf9000.emf9000.emf9000.emf9000.emf9000.emf13006.emf13006.emf13006.emf13006.emf