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 9 page image

Safety vacon • 7Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/11.3 Grounding and earth fault protectionThe touch current of the drive is more than 3.5 mA AC. The standard EN 61800-5-1 tells that 1 ormore of these conditions for the protective circuit must be true.The connection must be fixed.a) The protective grounding conductor must have a cross-sectional area of minimum 10 mm 2 Cu or16 mm 2 Al. ORb) There must be an automatic disconnection of the mains, if the protective grounding conductorbreaks. See Chapter 5 "Installation". ORc) There must be a terminal for a second protective grounding conductor in the same cross-sectional area as the first protective grounding conductor.The values of the table are valid only if the protective grounding conductor is made of the samemetal as the phase conductors. If this is not so, the cross-sectional area of the protective groundingAfter having disconnected the Active Front End from the AC supply, wait until the fanstops and the indicators on the keypad go out (if no keypad is attached see the indica-tor through the keypad base). Wait 5 more minutes before doing any work on ActiveFront End connections. Do not even open the cover before this time has expired.Do not use spare parts that are not from the manufacturer. Using other spare partscan cause damage to the drive.Do not touch the components on the circuit boards. Static voltage can cause damageto these components.Prevent radio interference. The AC drive can cause radio interference in a domesticenvironment.NOTE! If you activate the autoreset function, the system starts automatically after an auto-matic fault reset. See the VACON® NX AFE Application Manual.NOTE! If you use the AC drive as a part of a machine, the machine manufacturer must sup-ply a mains disconnection device (refer to EN 60204-1).The AC drive must always be grounded with a grounding conductor that is connectedto the grounding terminal that is identified with the symbol .Not using a grounding conductor can cause damage to the drive.Table 2. Protective grounding conductor cross-sectionCross-sectional area of the phaseconductors (S) [mm 2]The minimum cross-sectional area of theprotective grounding conductor in question [mm 2 ]S ≤ 16 S16 < S ≤ 35 1635 < S S/213006.emf13006.emf13006.emf13006.emf13006.emf