Operation principle and hardware
description
Contents of this chapter
This chapter gives information about the hardware of the control units.
Hardware description
The control unit is used for controlling converter modules via fiber optic links. The
control unit contains integrated branching unit functionality for collecting and storing
real-time data from the converter modules to help fault tracing and analysis. The data
is stored on a memory card which can be analyzed by ABB service personnel.
The control unit requires an external 24 V DC power source. It has three option slots
for I/O extensions, encoders and fieldbus adapters, and a removable memory unit. If
it is necessary to replace the control unit, you can keep the parameter settings by
moving the memory unit from the defective control unit to the new one. The control
unit has one option slot for connecting a RDCO DDCS communication option module.
The control unit also has a connection for a control panel.
The drive-to-drive link (XD2D) is a daisy-chained RS-485 transmission line that allows
basic master/follower communication with one master and multiple followers. The
X485 connection provides a connection for the optional CIO-01 I/O module.
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Operation principle and hardware description 11
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