Product Details
Kit Contents (PM861AK01):
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1 x PM861A CPU module (3BSE018168R1)
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1 x TP830 baseplate
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1 x TB850 CEX-Bus terminator
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1 x TB807 ModuleBus terminator
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1 x backup battery (4943013-6)
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Power plug
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FAQs
Q1: What is included in the PM861AK01 kit?
The PM861AK01 is a complete redundant CPU kit containing: 1 x PM861A CPU module, 1 x TP830 baseplate, 1 x TB850 CEX-Bus terminator, 1 x TB807 ModuleBus terminator, 1 x backup battery (4943013-6), and a power plug.
Q2: What is the switchover time in redundant configuration?
The PM861AK01 achieves failover time of ≤ 10 ms in redundant configuration. This ensures seamless, bumpless transfer from primary to backup CPU without process interruption, which is critical for continuous processes like power generation and refining.
Q3: What communication interfaces does this controller provide?
The controller baseplate includes:
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2 x RJ45 Ethernet ports (CN1, CN2) for Control Network connection (supports redundancy)
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2 x RJ45 serial ports (COM3, COM4): COM3 is RS-232C with modem control signals; COM4 is isolated for configuration tool connection
Q4: What is the difference between PM861AK01 and PM861K01?
The PM861AK01 is a redundant kit containing a single CPU unit designed for pairing with another PM861AK01 in a hot-standby configuration. The PM861K01 is a single CPU kit for non-redundant applications. For critical processes requiring high availability, the redundant AK01 version is recommended.
Q5: What are common symptoms of a failing PM861AK01?
Common failure signs include: CPU taking longer to start, unexpected status LED indications, occasional communication trouble with the AC 800M system, or controller not responding as expected. Before replacing the CPU, check power supply connections, CPU status indicators, communication cables and modules, and battery condition.
