ABB DCS ABB AC800M PLC AC 800M Controller

ABB AC 800M Controller

The ABB AC 800M controller is a family of rail-mounted modules, consisting of AC 800M CPUs, communication modules, power supply modules and various accessories. Several CPU modules are available that vary in terms of processing power, memory size, SIL-rating, and redundancy support.

Each AC 800M CPU module is equipped with two Ethernet ports for communication with other controllers and for interaction with operators, engineers, managers, and higher level applications. A Flash memory card can be inserted into a slot in the AC 800M CPU module to store the application and data.

The connectivity and expansion options make the AC 800M exceptionally open and scalable, that is, easy to connect to the surrounding world of supervisory systems and intelligent devices of all kinds – and adaptable to changing requirements as the process it controls changes or expands.

AC 800M High Integrity Controller
The ABB AC 800M High-Integrity offers an IEC 61508 and TÜV-certified control environment for combining safety and business critical process control in one controller unit without sacrificing the safety integrity.

The ABB AC 800M HI is certified to comply with the requirements of:

Requirement Class AK 1 – 4 according to DIN V 19250/DIN V VDE 0801
Safety Integrity Level 1 – 3 according to IEC 61508
Category 1 – 3 according to EN 954-1

The ABB AC 800M controller can be configured with both Compact Control Builder and ABB 800xA control builder.

When configured with the Compact Control Builder the ABB AC 800M is open to participate in any kind of control solution.

When configured with the ABB 800xA control builder AC 800M becomes a tightly integrated part of the 800xA DCS. Then offered and also described as a part of the ABB 800xA system offering.

ABB AC 800M CPU Modules
Several ABB AC800M CPU modules are available that vary in terms of processing power, memory size, and redundancy support. Each AC 800M CPU module is equipped with built in Ethernet port(s) for communication with other controllers and for interaction with operators, engineers, managers, and higher level applications. These ports can be configured for redundancy for those cases where availability is of paramount importance. It is also equipped with two RS-232C ports that can be used for point-to-point communication with programming/debugging tools and with third-party systems and devices.

AC 800 Com and I/O Modules
To each CPU module, a number of communication and I/O modules can be added,
for example:

Additional RS-232C ports
PROFIBUS DP, DP-V1 interface
ABB INSUM interface
MasterBus 300 interface
S100 I/O interface
S800L and S800 I/O modules

CPUs / Features	AC 800 M PM851	AC 800 M PM856	AC 800 M PM860	AC 800 M PM861A	AC 800 M PM864A	AC 800 M PM865	AC 800 M PM866	AC 800 M PM891
Processor Unit	PM851	PM856	PM860	PM861A	PM864A	PM865	PM866	PM891
High Integrity Controller	No	No	No	No	No	Yes	No	No
Clock frequency	24 MHz	24 MHz	48 MHz	48 MHz	96 MHz	96 MHz	133MHz	450MHz
Memory (RAM)	8 Mb	8 Mb	8 Mb	16 Mb	32 Mb	32 Mb	64 Mb	256 Mb
CPU redundancy support	No	No	No	Yes	Yes	Yes	Yes	Yes
Switch over time in red. conf.	–	–	–	max 10 ms	max 10 ms	max 10 ms	max 10ms	max 10ms
Ethernet channels	1	2	2	2	2	2	2	2
Performance, 1000 boolean operations (a:=b and c)	0.46 ms	0.46 ms	0.23 ms	0.23 ms	0.15 ms	0.15 ms	0.09 ms	0.043 ms
Comm. modules on CEX bus	1	12	12	12	12	12	12	12
I/O clusters on ModuleBus (local I/O)	1 el. + 1 opt.	1 el. + 7 opt.	1 el. + 7 opt.	1 el. + 7 opt.	1 el. + 7 opt.	1 el. + 7 opt.	1 el. + 7 opt.	0 el. + 7 opt.
I/O capacity on ModuleBus (local I/O) (Non redundant confi guration only)	max 24 I/O modules	max 96 I/O modules	max 96 I/O modules	max 96 I/O modules	max 96 I/O modules	Limited, see user manual for details	max 96 I/O modules	max 84 I/O modules

Supported Communication modules	Profibus	Foundation Fieldbus	RS-232 C	MB300	INSUM	Drivebus	S100 I/O interface	Genius TRIO I/O	Satt I/O
Module	CI854A	CI860	CI853	CI855	CI857	CI858	CI856	CI862	CI865
Protocol	DP-V1 (PA via Linking Device)	HSE (H1 via Linking Device)	Modbus master, Comli master/slave, Siemens master, User defi ned protocols	MB300	IEEE 802.3	ABB’s Drivebus	ABB’s S100 I/O	Genius	ABB´s Satt I/O
Master or slave	Master	Master	Master/slave	Master/slave	Master	Master	Master	Master	Master
Number of channels	1	1	2	2	1	1 main, 2 aux	1	1	1

Supported Communication modules	ModbusTCP	IEC 61850	AF100	Ethernet/IP	PROFINET IO
Module	C1867	C1868	C1869	C1873	C1871
Protocol	Modbus TCP	IEC61850	AF100 Data set	Ethernet/IP	PROFINET IO
Master or slave	Master/slave	Master	Master/slave	Master	Master
Number of channels	2	1	2	1	1