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ABB PM856 3BSE018128R1 AC 800M Processor Unit

Name: ABB PM856 3BSE018128R1 AC 800M Processor Unit
Brand: ABB
Availability: InStock

Manufacturer:ABB

Product Number:PM856 3BSE018128R1

Product Type:AC 800M Processor Unit

Origin:Sweden (SE)

Dimensions:119 x 186 x 135 mm

Weight:1.1 kg

Views:37

Payment Methods:T/T, PayPal, Western Union

Condition:New & In Stock

Warranty:1 Year

Lead Time:1-3 Working Days

Certificate:COO

Courier partners:DHL, UPS, TNT, FedEx and EMS.

Business hours:7*24

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Product Description

The ABB PM856 (3BSE018128R1) is a powerful processor module within the AC 800M family of controllers, designed for high-performance industrial control applications. It supports modular expansion, integrated communication, and redundant operation. The PM856 is suitable for both standalone and distributed systems across various industries such as power, oil & gas, and manufacturing.

Technical Specifications

Parameter	Details
Product Model	PM856
Product Code	3BSE018128R1
Processor Type	MPC860 (48–133 MHz)
Memory	RAM with battery-backed real-time clock
Communication Ports	2 x Ethernet RJ45, 2 x RS-232C
Network Ports	CN1, CN2 (Ethernet)
Serial Ports	COM3 (RS-232C), COM4 (Isolated RS-232C)
ModuleBus Support	Electrical and Optical
CEX-Bus Support	Yes, for communication extension
Redundancy	Supported (CPU, Communication, I/O)
Storage Expansion	CompactFlash card slot
Power Supply	24 V DC
Mounting	DIN rail
Protection Rating	IP20
Dimensions (W x H x D)	119 x 186 x 135 mm
Weight	1.1 kg

Applications

Distributed control systems in process industries
Batch control for chemical and pharmaceutical plants
Safety-integrated automation for power and energy systems
Integrated control in pulp and paper manufacturing
High-reliability control in oil & gas operations

Product Advantages

Scalable and modular architecture for flexible system design
Built-in support for CPU and communication redundancy
Integrated Ethernet and RS-232 communication interfaces
Reliable memory retention with optional external battery backup
Simple DIN rail mounting and compact design
Low power consumption, no active cooling required
Full support for ABB’s S800 I/O system
Broad protocol support via CEX-Bus (PROFIBUS, Modbus TCP, FF, etc.)

Frequently Asked Questions (FAQ)

Q1: Does PM856 support redundant CPU configuration?

A1: Yes, it supports hot-standby redundancy using RCU Link cable (TK851).

Q2: What I/O modules are compatible with PM856?

A2: It supports S800 I/O (electrical and optical), as well as extensions via CEX-Bus to other I/O interfaces.

Q3: Is the internal battery replaceable?

A3: No, but you can use the SB821 external battery for extended backup time.

Q4: Does PM856 require active cooling?

A4: No fan is needed; its design ensures passive cooling under normal conditions.

Q5: Which software tool is used for configuration?

A5: ABB Control Builder, part of the 800xA system, is used for configuration and programming.

Q6: How is firmware updated?

A6: Firmware is loaded through COM4 (serial) or CN1/CN2 (Ethernet) using Control Builder.

Q7: What is the maximum number of I/O clusters supported?

A7: One electrical cluster and up to seven optical clusters (12 modules each).

Q8: Can PM856 connect to IEC 61850 networks?

A8: Yes, with the CI868 communication interface module via CEX-Bus.

Q9: Is it certified for hazardous locations?

A9: Yes, PM856 complies with UL60079-15 for Class I, Zone 2 environments.

Q10: What type of memory card does PM856 use?

A10: It uses a CompactFlash card for backup and firmware storage.