Vector SIMOVERT MASTERDRIVES 6SE70 VC Istruzioni per gli Interventi Pagina 150

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Maintenance Vector Control Chassis Type Frequency Converter
476 869 4070 76 J AB-74 Siemens AG
12-10 Operating Instructions SIMOVERT MASTERDRIVES
Remove the VDU and the VDU resistor (if present).
Remove the VDU retainer plate.
Detach the plug-in connections on the PSU.
Undo the screws (six Torx M4 screws) on the PSU.
Take out the PSU.
Install the new PSU in the reverse sequence.
12.16 Replacing the IGD
IGD: IGBT Gate Drive
The IGD board is mounted directly on the IGBT modules.
Take out the capacitor battery.
Remove the electronics box with IVI board for type E.
Mark the output wiring U2/T1, V2/T2 and W2/T3 and disconnect it.
Remove the inverter bus module after unscrewing the twelve M6
screws.
Withdraw connector X295.
Undo the fixing screws and remove the IGD board.
The IGD board is mounted directly on the IGBT modules.
Take out the capacitor battery.
Remove the SML and SMU modules.
Remove the module busbars.
Remove the fiber-optic cables or connector X295.
Withdraw connectors X290 and X291.
Undo the fixing screws and remove the IGD board.
The spacing between the plus busbar and the minus busbar must be at
least 4 mm. In order to install the module busbars, you must therefore
use a template, e.g. a 4 mm thick piece of plastic.
The IGD board is situated behind the module busbars.
Take out the capacitor battery.
Take out the SML and SMU modules.
Remove the module busbars.
Remove the nine fiber-optic cables at the top of the IGD.
Withdraw the P15 feeder cable.
Undo the fixing screws and remove the IGD board.
Install the new IGD in the reverse sequence.
Make sure when doing so that you push in the fiber-optic cables up
to the endstop.
Construction type K
Construction types
E and F
Construction type G
NOTE
Construction type K
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