ABB PM891K01 3BSE053241R1 AC 800M Controllers Processor Unit

FAQ

• Q1: What is the maximum number of S800 I/O units that can be connected to the PM891 optical Modulebus?
  A1: The PM891 optical Modulebus can connect up to seven clusters of S800 I/O units, each cluster supporting up to 12 units.

• Q2: Does the PM891 include an internal battery for the real-time clock?
  A2: No, the PM891 does not contain any internal battery.

• Q3: How is redundancy implemented on the PM891 processor unit?
  A3: CPU redundancy is supported, covering the CPU, CEX-Bus, communication interfaces, and S800 I/O modules, providing higher system availability.

• Q4: Can the CEX-Bus support redundant communication interfaces?
  A4: Yes, the CEX-Bus can be equipped with redundant communication interface units to enhance communication reliability.

• Q5: What is the purpose of the BC810 CEX-Bus Interconnection unit?
  A5: The BC810 segments the CEX-Bus into separate parts to increase overall system availability and fault tolerance.

• Q6: How are configuration tasks performed on the PM891?
  A6: Configuration is performed through the isolated RJ45 COM4 port using a dedicated configuration tool.

• Q7: What protection class does the PM891 have and does it require an enclosure?
  A7: The PM891 has IP20 protection and does not require additional enclosures.

• Q8: Does the PM891 support high-performance applications with large memory requirements?
  A8: Yes, the processor unit offers high performance and a large application memory to accommodate complex control applications.

3BSE053241R1 ABB AC 800M Controllers PM891K01 Processor Unit

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