34
Device
Description
A411
NCAN module
A45
Grid-side current and voltage measuring unit
U6
CROWBAR, protection device of rotor-side
E11
Heater
G10
UPS
Control boards and optional modules
RDCU-12C
Grid-side converter is controlled by its own RDCU control unit (containing the RMIO-
12C board). The RDCU is connected to the grid-side converter modules by a fiber
optic link. For further information, see RDCU drive control units hardware manual
[3AFE64636324 (English)].
NDCU-33CX
Rotor-side converter is controlled by its own NDCU control unit (consisting of the
NIOC-02C and AMC-33 boards). The NDCU is connected to the rotor-side converter
modules by a fiber optic link, distributed through APBU optical branching unit.
RDCO-02C
DDCS channel board (RDCO) is an extended module for the RMIO board. It
provides optic fiber connection for PC tool, overriding controller, master-follower
communication and additional I/O modules.
NTAC-02
NTAC-02 pulse encoder interface module offers an interface for a digital pulse
encoder connection. A pulse encoder can be used if accurate speed or position
(angle) feedback from the motor shaft is required.
NCAN-02C
NCAN-02 adapter module is an optional fieldbus adapter module. Wind turbine
converter can be connected to a CANopen serial communication bus through
NCAN-02 module.
NETA-21C+NEXA-21C
NETA Ethernet adapter module is an optional device for browser-based remote
monitoring of the wind turbine converter via Ethernet. Multiple converters (up to 9)
can be connected to the network through the DDCS branching unit (NDBU-85/95) or
using a ring topology.
APBU-44C
APBU-44C PPCS branching and data logger unit is used to implement the parallel
connection of multiple grid-side or rotor-side converter modules. The APBU-44C
Hardware description