Vacon 20 CP Installation, Technical And Maintenance Manual

Also see for 20 CP: User manual Installation, Technical and Maintenance Manual

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Vacon 20 CP Installation, Technical And Maintenance Manual Manual pdf 11 page image

Safety vacon • 9Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/11.7 Insulation systemA distinction has to be made for the following three groups of terminals, according to the insulationsystem of VACON ® 20 CP:• Mains and motor connections (L1, L2, L3, U, V, W) or (L, N, U, V, W)• Relays (R01, R02)(**)• Control terminals (I/Os, RS485, STO)The Control terminals (I/Os, RS485, STO) are isolated from the Mains (the insulation is reinforced,according to IEC 61800-5-1) and the GND terminals are referred to PE.This is important when you need to connect other circuits to the drive and test the completeassembly. Should you have any doubts or questions, please contact your local distributor.Figure 3. Insulation system (three-phase version).Please, consider carefully the insulation system depicted in Figure 2, before con-necting any circuit to the unit.The control unit of VACON ® 20 CP fulfils the insulation requirements of the stan-dard IEC 61800-5-1 regarding DVC A circuits and also the strongest insulationrequirements of IEC 60950-1 regarding SELV circuits.POWER UNITL1L2L3UVWR01 __R02 __10Vref __Analog Inputs __Digital Inputs__Analog Output __24V __RS485 __STO __KeypadCONTROL UNITReinforcedMainsDVC ADVC A or Mains (**)DC- (*) DC+/R+ R-