Danfoss VLT FCD 311 Design Manual

Also see for VLT FCD 303: Operating instructions

Contents

Danfoss VLT FCD 311 Design Manual Manual pdf 43 page image

VLT® FCD Series Elektrical installation, control terminalsSee section entitled Earthing of screened/armouredcontrol cables in the Design Guide for the correcttermination of control cables.No. Function01-03 Relay outputs 01-03 can be used forindicating status and alarms/warnings.12 24 V DC voltage supply.18-33 Digital inputs.20, 55 Common frame for inputand output terminals. Can be separatedwith switch S10031a,31bMotor thermistor35 Common (-) for external 24 V controlback up supply. Optional.36 External + 24 V control back up supply.Optional.42 Analog output for displaying frequency,reference, current or torque.46 Digital output for displaying status,warnings or alarms, as well asfrequency output.50 +10 V DC supplyvoltage for potentiometer53 Analogue voltage input 0 - +/- 10 V DC.60 Analogue current input 0/4 - 20 mA.67 + 5 V DC supply voltageto Profibus.68, 69 RS 485, Serial communication.70 Ground for terminals 67, 68 and 69.Normally this terminal is not to be used.D For future useV +5V , redP RS485(+), yellowN RS485(-), greenG OV, blue VLT Software DialogConnection to terminals 68–70. Relay connectionSee parameter 323 Relay output for programming ofrelay output.No. 01 - 02 1 - 2 make (normally open)01 - 03 1 - 3 break (normally closed) LCP 2 plug, optionalAn LCP 2 control unit can be connected to a plugwhich is mounted in the housing. Ordering number:175N0131.LCP control units with ordering number 175Z0401are not to be connected. Installation of 24 Volt external supply (optional)24 V external DC supply can be used as low-voltagesupply to the control card. This enables full opera-tion of the LCP2 and serial bus (incl. parametersetting) without connection to mains.Please note that a warning of low voltage will begiven when 24 V DC has been connected; howeverthere will be no tripping.NB!:Use 24 V DC supply of type PELV to ensurecorrect galvanic isolation (type PELV) on thecontrol terminals of the VLT frequency converter.Beware of unintended start of the motor,if the mains power is applied during oper-ation on the external 24 V back up supply.MG.04.A1.02 - VLT is a registered Danfoss trade mark 43Installation