Any abnormal conditions are automatically routed to the HMI

or other alarm or message collecting software.

The redundant design provides an automatic

one- to-one backup, thus ensuring high system

availability. If the primary controller is faulty, the

hot standby controller, executing the same

control strategy and process data, immediately takes over control.

MR Series controller key features include:

• Large variety of powerful functions available in tested libraries

• Easy configuration, service and commissioning with S+ Engineering

• Inherent redundancy without configuration/wiring costs

• Real-time multitasking operating system

• Up to 16 different cycle times

• Comprehensive monitoring and diagnostic functions

• Interface for radio clock connection

• Bumpless downloadable firmware and application programs (no EPROMs)

• Cyber security proven

• PM 877 without battery

The range of available function blocks extends

from simple control and individual drive functions

to complex recipes based on S88 and NAMUR

using sequential function charts based on IEC61131-3.

Function blocks may also be used to set up

customer-specific libraries in S+ Engineering for Melody.