Operating instructions/system description

Power supply concepts with Power RailRedundant power supply KFD2-EB.D2A.B power supply module for redundant power supply Two professional power supplies with one power supply module can be used as a redundant power supply for a Power Professional rail. Power supply module KFD2-EB.R2A.B for redundant power supply of the Power Rail. A redundant power supply to the Power Rail, with two supply modules, provides increased safety. If the fuse in one power supply module operates, the power supply is obtained via the second power supply module. Each power supply circuit is connected via its own Power Rail contact. Power feed module
Power Rail Supply module 1
Power Rail Supply module 2
Power supply 1Power supply 2 Power supply 1Power supply 2 Lead fault Collective fault indication (K-system only) Collective fault indication enables lead breakage monitoring to be provided for many isolator modules without additional wiring costs.In fault conditions, an interrupt signal from the isolator module (i.e.KFD2-SR2.Ex2.2S) is transferred to the Power Rail. The power supply module evaluates the signal and passes the fault information to the PLC/ control system using a potential-free contact.
Isolator modulesFault signal Potential free contactPower supply module Date of issue03/03/06 – Catalogue K-system Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany

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