Chapter 3 – Electrical Installation
ACA 6xx Sections and ACS/ACC 6x7 (132 to 3000 kW) Frequency Converters 3-39
Observe colouring codes when installing fibre optic cables. Blue
connectors should go to blue terminals, and grey connectors to grey
terminals.
In case multiple modules are installed on the same channel, they must
be connected in a ring.
Optical Components The optical transmitter and receiver types (5 MBd or 10 Mbd) in DDCS
channels CH0 to CH3 on the NAMC boards are given below.
Note 1: When connecting an NAMC board to another unit make sure,
that the optical components are of the same type at both ends of the
link. Do not mix 5 MBd and 10 MBd transmitters and receivers.
Note 2: With 5 MBd optical components only plastic optical cable
(POF) can be used. The maximum cable length is 10 metres.
However, when operating at the lower speed of 1 Mbit/s (normally with
DriveWindow) the cable length can be extended to 15 metres.
Note 3: With 10 MBd components either plastic (POF) or Hard
Clad Silica (HCS) optical cable can be used. When the maximum
optical power (transmitter current) is selected by the software, the
following cable lengths are applicable:
DDCS
Channel
Optical Transmitter/Receiver Type
NAMC-11/51 Board DDCS Communication Option NAMC-21 Board NAMC-22 Board
NDCO-01 NDCO-02 NDCO-03
CH0 - 10 MBd
(DriveBus)
5 MBd 5 MBd 10 MBd (DriveBus) 5 MBd
CH1 5 MBd - - - 5 MBd 5 MBd
CH2 - 10 MBd 10 MBd 5 MBd 10 MBd 10 MBd
CH3 - 10 MBd 10 MBd 5 MBd 10 MBd 10 MBd
Cable NAMC-21/22/51 Board
Cable length (m)
POF 30
HCS 200
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