ABB Advant Controller 450 User Manual

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All modules in the subracks are powered by 24 V unstabilized voltage and 5 V stabilized
voltage. 24 V is converted to 5 V by voltage regulators. Each subrack has one or several
dedicated voltage regulators. Different types are available which are adapted to mechanical,
energy and special high-reliability/availability requirements.
Figure 1-14 shows the voltage regulator location in a controller subrack. The regulator module
SR511 is intended to be installed from the front side of the controller subrack.
Redundancy is achieved by adding an extra module (n+1 redundancy).
You can equip an I/O subrack with a single voltage regulator DSSR 122 or redundant regulators
of the type DSSR 170. The number of DSSR 170 is always three, two of which are needed with
respect to capacity (n+1 redundancy). Figure 1-15 illustrates the two alternatives.
These regulator modules are installed on the rear of the I/O subrack.
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ABB Advant Controller 450 Specifications

General

Brand	ABB
Model	Advant Controller 450
Category	Controller
Language	English