9.9.1 DC Bus topology
Without intermediate circuit fuses, other devices can become damaged or destroyed if, for
example, a device fails due to an internal short circuit. If a device fails due to a short-circuit,
only its intermediate fuses are tripped and the rest of the network continues uninterrupted.
Fuses cannot avoid damage by current peaks completely. The solid busbars can conduct
large currents.
Fuse types see (➜ # 32). More information can be found in the "KDN".
9.9.2 External brake resistor (X8)
An external brake resistor can be connected to X8 (-RB, +RB).
Fuse types (➜ # 32).
Brake circuit and technical data: (➜ # 34).
If you want to link the DC bus with neighbored S748/772 servo
amplifiers, see connection example in chapter "DC Bus link".
Screw driver for plus-minus-screws (Combiprofile Slotted/Pozidriv) size 2
S748-772 Instructions Manual | 9 Electrical Installation
Kollmorgen | kdn.kollmorgen.com | July 2019 71
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