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3 Electrical Installation VLT ® Micro Drive FC 51 Operating Instructions For EMC correct installation, use optional de-coupling plate, see chapter Options for frequency converter. 3 Illustration 3.5: Frequency converter with de-coupling plate 3.4 Control Terminals 3.4.1 Access to Control Terminals All control cable terminals are located underneath the terminal cover in front of the frequency converter. Remove the terminal cover using a screwdriver. Illustration 3.6: Removing terminal cover. NB! See back of terminal cover for outlines of control terminals and switches. 14 MG.02.A4.02 - VLT ® is a registered Danfoss trademark
VLT ® Micro Drive FC 51 Operating Instructions 3 Electrical Installation 3.4.2 Connecting to Control Terminals This illustration shows all control terminals of the frequency converter. Applying Start (term. 18) and an analog reference (term. 53 or 60) make the frequency converter run. 3 Illustration 3.7: Overview of control terminals in PNP-configuration and factory setting. 3.5 Switches NB! Do not operate switches with power on the frequency converter. Bus termination: Switch BUS TER pos. ON terminates the RS485 port, terminals 68, 69. See power circuit drawing. Default setting = Off. Illustration 3.8: S640 Bus termination. S200 Switches 1-4: Switch 1: *OFF = PNP terminals 29 ON = NPN terminals 29 Switch 2: *OFF = PNP terminal 18, 19, 27 and 33 ON = NPN terminal 18, 19, 27 and 33 Switch 3: No function Switch 4: *OFF = Terminal 53 0 - 10 V ON = Terminal 53 0/4 - 20 mA * = default setting Table 3.5: Settings for S200 Switches 1-4 Illustration 3.9: S200 Switches 1-4. NB! Parameter 6-19 must be set according to Switch 4 position. MG.02.A4.02 - VLT ® is a registered Danfoss trademark 15
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