ABB DCS | AC800F PLC – The Field Controller

ABB AC800F PLC

The ABB DCS AC 800F controller distributes process and diagnostic data from four fieldbus gateways. If required, it can also work with various fieldbus types – and this
is, of course, in addition to the usual tasks of a “conventional” controller. Thanks to its compact and sturdy design, the AC 800F is suitable both for installation in the control room and for use in junction boxes directly in the field.

AC 800F – The Field Controller

Economical and reliable into the future

AC 800F offers new possibilities, combining “easy engineering” with an open and modern system architecture:

Availability: Redundancy at all levels
Freedom of Choice: PROFIBUS, FOUNDATION Fieldbus or HART; or combinations of those protocols
Efficient Engineering: Support for FDT/DTM
Only one tool for engineering, commissioning and diagnositics
Asset Optimization and batch processing
System engineering covers fieldbus and device configuration
On-board web server for remote diagnostics

TECHNICAL DATA	ABB DCS
CPU	32-bit super-scalar RISC processor with high-speed bit processing
RAM	4 Mbyte (SRAM) or 16 Mbyte (DRAM) with internal or external battery backup 4 Mbyte Flash EPROM
Environmental conditions	Ambient temperature: 0…60 °C Degree of protection: IP 20
Dimensions	239 x 202 x 164 mm (W x H x D) Mounting on DIN rail
Power supply	120 / 230 V AC 24 V DC, redundant Power consumption: 30 VA max.
Approvals	CSA-UL, CE, NAMUR

AC800F Ordering information

AC800F Part No.	Parameters	IN STOCK
FIELD CONTROLLER MASTER UNIT		Check Stock
PM802F	Include rack , CPU,8M	Check Stock
PM803F	Include rack , CPU,16M	Check Stock
POWER SUPPLER		Check Stock
SA811F	Field control equipment 220VAC-24VDC	Check Stock
SD812F	Field control equipment 24VDC-24VDC	Check Stock
Ethernet module		Check Stock
EI811F	10Base2 Module	Check Stock
EI812F	AUI Module	Check Stock
EI813F	10Base T Module	Check Stock
Other communication module		Check Stock
FI810F	CAN Module	Check Stock
FI820F	Modbus Module	Check Stock
FI830F	Profibus-DP V1 Module	Check Stock
FI840F	FF Module	Check Stock
Accessory		Check Stock
TK807F	SA801F/SA811F service cable	Check Stock
TK808F	SA801F/SA811F service cable,Eur standard plug	Check Stock
TK809F	SA801F/SA811F service cable,USA standard plug	Check Stock
TK802F	SD802F service cable	Check Stock
TK821F	Serial interface communication cable,0.5m	Check Stock
TK831F	CAN communication cable,0.5m	Check Stock
TK811F	CAN communication cable,3m	Check Stock
TK817F	CAN communication cable,100m	Check Stock
TK890F	Diagnosis cable 5m	Check Stock
TK891F	Diagnosis cable 10m	Check Stock
TB870F	Communication wiring board	Check Stock
AM811F	Battery module	Check Stock
AM895F(4)	Front panel(4pcs in one bag)	Check Stock
SB808F	RAM back up battery (for EI8**Fmodule)	Check Stock
SY809F	Battery stents	Check Stock

The ABB DCS AC 800F hardware

The ABB AC 800F has a modular structure. The AC 800F CPU is designed as a backplane to which various modules – power supply units, Ethernet or fieldbus modules – can be attached in line with the application. On the fieldbus side, modules for PROFIBUS-DPV1, FOUNDATION Fieldbus HSE, MODBUS (master/slave, RTU or ASCII), IEC 608 0-5-101 and CAN for Freelance Rack I/O are available. The fieldbus line and the connected PROFIBUS slaves are entirely configured and parameterized using the Control Builder F engineering tool. No further external tools are needed for configuration. PROFIBUS slaves can be integrated into the system using a GSD) file or FDT/DTM). In the case of FOUNDATION Fieldbus, configuration takes place using CFF or DD files. This allows fieldbus parameterization even without connected field devices.

Also Freelance Rack I/O can be connected to the ABB AC 800F, in which case a CAN module is used. This allows you to operate five I/O racks, with a total of around 1000 I/Os, for each AC 800F. The I/O racks are equipped with a link module and up to nine I/O modules and can be mounted separately at a distance of up to 400 m from the AC 800F.

AC 800F Fieldbus modules

The ABB AC 800F uses the fieldbus modules to collect and process real-time and diagnostic data. Up to four fieldbus modules can be mounted into one AC 800F.

The fieldbus modules have the following tasks and
characteristics:
• Electrical isolation between the process and system
• Status LEDs for the module status
• Independent fault detection and fault signaling
• Connection of the fieldbus lines

DETAILS OF THE FIELBUS MODULES	ABB CH	ABB PLC
TYPE	CHANNELS	FUNCTION
CAN module	1	Connection of up to 5 Freelance I/O racks
Serial module		RS /RS4 /RS485 configurable for MODBUS, IEC 608 0-5-101 telecontrol protocol
PROFIBUS module	1	Full-value PROFIBUS DPV1 Master
FF-HSE module	1	For the connection of up to 10 LD 800HSE Linking Devices with 10/100 MBaud autosense twisted pair connection

Ethernet modules

Process stations and the operator and engineering level in the Freelance system communicate with each other via Ethernet.

ETHERNET MODULES FOR THE SYSTEM BUS
TYPE	CHANNELS	FUNCTION
Ethernet module	1	Twisted pair connection 10 base T for connection to hubs or switches
Ethernet module	1	BNC connection 10 base for thin coaxial cable (Cheapernet), 10 MBit/s
Ethernet module	1	AUI connection 10 base 5 and 10 base FL via coupler

ABB AC 800F functional range

The ABB AC 800F scope of functions provided by the Freelance system corresponds to the basic supply defined in IEC 61131-3, in addition to numerous other high performance, industry-proven functions and function blocks. They are accommodated in a function block library and can be supplemented by user-specific function blocks. While designing the station and during configuration, the processing capacity and speed of the process station can be easily adapted to the demands of the automation task. Program execution in the process station is based on a task-oriented, real-time multitasking operating system, leading to a flexible strategy for processing programs.
Different modes are available for task execution:

Cyclical processing with cycle times from 5 ms upward
Fastest-possible processing (PLC mode)

Along with the user tasks, system tasks – in which functions can also be processed – are automatically made available. These tasks are executed once in case of the following events:

RUN
STOP
COLD START
WARM START (voltage restored)
REDUNDANCY TOGGLE
ERROR

Up to eight cyclic user tasks and one PLC mode task can be configured in a process station.

Functions and Function Blocks
Analog value processing AC800F FUNCITIONS	Input and output conversion Linearization -Delay and dead-time filter Average/extreme value determination in time Setpoint adjustment Counter with analog input Time scheduler

Binary value processing	Binary output, monostable Input and output delay Pulse/time counter, pushbutton

Closed-loop control	Continuous controllers Step controllers On/off controller, three-position controller Ratio controller Basic functions Auto-tuning

Open-loop control	Individual drive functions Sequence control, dosing circuits

Logic functions	Logic processing Average/extreme value determination Comparator, binary switch Multiplexer -Converter (data type & code) Flip-flop, edge detection String blocks radio controlled adjustment of daylight-saving time

Monitoring	Analog and binary monitoring Event monitoring Audible alarm control Connection monitoring Sequence-of-Events (SOE)

Acquisition Arithmetic functions	Disturbance course acquisition, trend acquisition Basic arithmetic functions, numerical functions Logarithmic functions Trigonometric functions Analog value and time limitation

Modbus functions PROFIBUS	Master and slave functions DPV1 master functions for AC 800F

FOUNDATION Fieldbus (FF) Send/Receive	FF High Speed Ethernet (HSE/H1) for AC 800F Send and receive blocks for inter-system communication

Phase logic processing	Interface module for batch applications

High Flexibility

Digital communication has changed automation technology to the better. Fieldbus technology is nowadays proven and well accepted by the users to perform the tasks of transmitting process- as well as diagnostic data. This is an enabling technology for new applications such as asset optimization

ABB AC 800F collects and processes signals and diagnostic data from up to four fieldbus lines. If required, it can also simultaneously work with various fieldbus types – and this is, of course, in addition to the usual tasks of a “conventional” process station. Furthermore, the ABB DCS AC 800F has a compact and modular design which makes it a universal electronic component for virtually all types of applications. It is suitable for both: simple installation in the switch room and for direct use in the field. Take the advantage provided by this technology:

The ABB DCS AC 800F allows you to use the fieldbus type(s) which best meets your requirements:

PROFIBUS
Foundation Fieldbus
MODBUS protocol
Interbus
IEC 870-5 telecontrol protocol
CAN-Bus for connecting Input/Output modules
HART with PROFIBUS remote I/O

Maximum Security

Efficient Engineering

For consistent configuration, commissioning and diagnosis – from graphics to the field device – you only need one engineering tool. This tool supports fieldbus-specific
configuration in the familiar way by means of its consistent, system-wide database. This includes:

Configuration and parmeter setting of field devices and remote I/Os via GSD/GSE files or FDT/DTM
Integrated diagnostics for controller and device checks with automatic alarms
Automatic generation of displays for operation
Bus topology and parameters such as transmission rates and addre

Intelligent linking devices

As the AC 800F possesses the high-speed connection of both PROFIBUS (PROFIBUS DP) and FOUNDATION Fieldbus (FF-HSE), the slower buses of the two fieldbus technologies (PROFIBUS PA and FF-H1) can be connected using intelligent linking devices.

These devices allow to connect several slow buses to one fast bus, with the advantage that a lot more field devices can be connected to an ABB DCS AC 800F station than when the slow fieldbuses are connected directly.

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