CP-A RU redundancy unit
Section 3 Modules
52
M&I – AC 900F Controller
CP-A RU redundancy unit
If a fault occurs in the first power supply circuit, the secondary supply circuit covers
the total current requirements of all consumer loads and the output circuits are
uncoupled by the CP-A RU redundancy unit.
CP-A RU_primary switch-mode power supplies.png
Operation/Function
Parallel operation, true redundancy
Redundant circuits are used to increase the operational reliability of the system in
case of errors (e.g. incorrect wiring, fuse trip, failure of individual devices). If a fault
occurs in the first power supply circuit (referred to as initial fault), all loads are
supplied by the second redundant circuit. For this purpose, the power supply units
connected in parallel are rated such as to ensure that the total power requirements of
all loads can be entirely covered by a single power supply unit. The output circuits
are uncoupled by the CP-A RU redundancy unit as shown in the figure below.
Summary of Contents for AC 900F
Page 2: ......
Page 3: ...Freelance 2016 Mounting and Installation Instructions AC 900F Controller ...
Page 58: ...CP C MM messaging module Section 3 Modules 58 M I AC 900F Controller ...
Page 70: ...TB 870F terminal block Section 4 Accessories 70 M I AC 900F Controller ...
Page 122: ...Update Restore Section 8 Service 122 M I AC 900F Controller ...
Page 152: ...CP A CM Section 9 Technical Data 152 M I AC 900F Controller ...
Page 154: ...Index 154 M I AC 900F Controller ...
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