ABB AC 800M controller and communication interface module



ABB AC 800M controller and communication interface module

Product Family Overview

AC 800M is a series of rail mounted module families, including CPU modules, communication modules, power modules, and various accessories, suitable for industrial automation control scenarios. Its CPU module covers a variety of options from medium processing power, low cost to high performance, and supports full redundancy. Some models (PM857, PM863, PM865, PM867) have passed IEC 61508-SIL3 certification and can be used for security applications and applications that combine process automation and security.

Core parameters of CPU module

General characteristics

Processing performance: The time consumption range for 1000 Boolean operations is 0.043ms (PM891) to 0.46ms (PM851A, PM856A), and the cycle time can be as low as 1ms (10ms for high integrity controllers).

Redundancy support: Some models (such as PM857, PM858, PM861A, etc.) support CPU redundancy, with a maximum switching time of 10ms.

Power specifications: All support 24V DC (19.2-30V DC), and power consumption varies depending on the model, with a typical value between 4.32W-15.8W. It has a built-in 5ms power reserve and can achieve controlled power-off.

Environmental adaptation: working temperature+5 to+55 ° C, storage temperature -40 to+70 ° C, relative humidity 5-95% (non condensing), protection level IP20, in compliance with multiple EMC and safety standards.

Typical model differences

Model/processor type/memory (RAM)/support for SIL3 certification/redundancy support

PM851A/MPC860/Unclear/No/No

PM857/MPC866/Not specified/Yes/Yes

PM863/MPC866/32MB/Yes/Yes

PM867/MPC866/64MB/Yes/Yes

PM891/MPC8270/256MB/No/Yes/

Types and characteristics of communication modules

Mainstream modules: covering CI853（RS-232 C）、CI854A/B（PROFIBUS DP）、CI857（INSUM）、CI858（DriveBus）、CI860（FOUNDATION FIELDBUS）、CI867/CI867A（MODBUS TCP） Waiting for multiple models.

Core parameters

Protocol support: including various industrial protocols such as MODBUS RTU, PROFIBUS DP-V1, IEEE 802.3, DriveBus, FF HSE, etc.

Transmission speed: ranging from 75bps (RS-232 C) to 100Mbit/s (EtherNet/IP, etc.).

Redundancy and hot plugging: Some modules support cable redundancy, module redundancy, and hot plugging functions, such as CI854B supporting PROFIBUS DP redundancy, and most modules supporting hot plugging.

Environment and Certification: Operating temperature+5 to+55 ° C, protection level IP20, compliant with CE, UL 508 and other certifications, as well as RoHS and WEEE directives.

Power supply and redundant modules

BC810/BC820: Both support redundancy, with input of 24V DC (19.2-30V DC), typical power consumption of 1.2W and 2.9W respectively, operating temperature of+5 to+55 ° C, protection level of IP20, and multiple marine certifications.

Differences: BC810 supports high integrity applications, while BC820 does not; The two have slight differences in parameters such as power consumption and weight.

General specifications and certifications

Certification standards: CE certification (compliant with EMC and low voltage directives), electrical safety standards (EN 50178, IEC 61131-2, etc.), some models are certified by UL 508, UL 60079-15 (hazardous areas).

Environmental Compliance: Compliant with RoHS Directive (2011/65/EU) and WEEE Directive (2012/19/EU).

Physical specifications: Most module sizes are concentrated in the range of width 58-119mm, height 186mm, depth 127.5-135mm, and weight 455g-1600g.