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The RDCU unit can be mounted on a vertical or horizontal 35 × 7.5 mm DIN rail.
The unit should be mounted so that air can freely pass through the ventilation holes
in the housing. Mounting directly above heat-generating equipment should be
avoided.
General
The shields of the I/O cables should be grounded to the chassis of the cubicle as
close to the RDCU as possible.
Use grommets at all cable entries.
Handle fibre optic cables with care. When unplugging fibre optic cables, always grab
the connector, not the cable itself. Do not touch the ends of the fibres with bare
hands as the fibre is extremely sensitive to dirt.
The maximum long-term tensile load for the fibre optic cables included is 1 N; the
minimum short-term bend radius is 25 mm (1”).
Digital/Analogue input/output connections
See the Firmware Manual of the application program in question.
Installation of optional modules
Follow the instructions given in the user manual of the module.
Other connections
See also the wiring diagram below.
Powering the RDCU
The RDCU is powered through connector X34. The unit can be powered from the
power supply board of the inverter (or IGBT supply) module, provided that the
maximum current of 1 A is not exceeded.
The RDCU can also be powered from an external 24 V DC supply. Note also that the
current consumption of the RDCU is dependent on the optional modules attached.
(For current consumption of optional modules, see their respective user manuals.)
Fibre optic connection to inverter/IGBT supply module
Connect the PPCS link of the AINT (ACS 800 series modules) board of the inverter
(or IGBT supply) module to fibre optic connectors V57 and V68 of the RDCU.
Note: The recommended maximum distances for the fibre optic link is 10 m (for
plastic [POF] cable).