Danfoss VLT HVAC Drive FC 102 Operating Instructions Manual

Also see for VLT HVAC Drive FC 102: Operating instructions Service guide Programming guide Installation guide Installation guide

Contents

175ZT975.10Illustration 4.11 Mounting of EMC Shield4.1.12 Mains ConnectionConnect mains to terminals 91, 92 and 93. Connect groundto the terminal to the right of terminal 93.TerminalnumberFunction91, 92, 9394Mains R/L1, S/L2, T/L3GroundTable 4.9 Mains Terminals ConnectionCAUTIONCheck the nameplate to ensure that the mains voltage ofthe frequency converter matches the power supply ofthe plant.Ensure that the supply can supply the necessary current tothe frequency converter.If the unit is without built-in fuses, ensure that theappropriate fuses have the correct current rating.4.1.13 External Fan SupplyIf the frequency converter is supplied by DC, or if the fanmust run independently of the power supply, apply anexternal power supply. The connection is made on thepower card.TerminalnumberFunction100, 101102, 103Auxiliary supply S, TInternal supply S, TTable 4.10 External Fan Supply TerminalsThe connector on the power card provides the connectionof mains voltage for the cooling fans. The fans areconnected from factory to be supplied from a common ACline (jumpers between 100–102 and 101–103). If externalsupply is needed, the jumpers are removed and the supplyis connected to terminals 100 and 101. Use a 5 A fuse forprotection. In UL applications, use a Littelfuse KLK-5 orequivalent.4.1.14 FusesUse fuses and/or circuit breakers on the supply side asprotection in case of component break-down inside thefrequency converter (first fault).NOTICEUsing fuses and/or circuit breakers is mandatory toensure compliance with IEC 60364 for CE or NEC 2009for UL.WARNINGProtect personnel and property against the consequenceof component break-down internally in the frequencyconverter.Branch circuit protectionTo protect the installation against electrical and fire hazard,protect all branch circuits in an installation, switch gear,machines etc. against short circuit and overcurrentaccording to national/international regulations.NOTICEThe recommendations do not cover branch circuitprotection for UL.Short-circuit protectionDanfoss recommends using the fuses/circuit breakersmentioned in this section to protect service personnel andproperty in case of component breakdown in thefrequency converter.Electrical Installation Operating Instructions46 Danfoss A/S © 08/2014 All rights reserved. MG11F50244