Hardware description
40
Layout of inverter module cubicles (frames 4×R8i to 9×R8i)
Inverter units of frames 4×R8i to 9×R8i are composed of parallel-connected 2×R8i
and 3×R8i cubicles.
Swing-out frame layout of the inverter module cubicles
The swing-out frame inside the inverter module cubicle provides space for the
control unit (RDCU), branching unit (APBU), I/O signal and auxiliary circuit terminal
blocks, breakers and relays.
The frame can be opened by removing the mounting screws and moving the swing-
out frame aside. Depending on selected options, the actual equipment may differ
from what is depicted below.
No. Description
1 Inverter control unit (RDCU) including the
control board (RMIO)
2 RDCO DDCS Adapter Module (options +L508
and +L509)
3 APBU Branching Unit with parallel-connected
inverter modules
4 24 V DC power supply
5 24 V DC back-up accumulator (Auxiliary Power
Interface Board [RAPI])
6 Terminal block for external IO connections,
hard wired to RDCU terminals (option +L504)
7 Terminal blocks for auxiliary voltage distribution
8 Auxiliary circuit breakers
9 Relays for motor temperature supervision
(options +L505 and +L506)
10 AIMA I/O Module Adapter (optional)
3
4
5
6
8
9
10
7
1
2
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