Freelance 800F AC 800F

Features 

ControlIT is the 

evolution of control 

systems into 

IndustrialIT: 

Hardware and software 

components seamlessly 

integrate processoriented information 

into true open 

applications, 

improving process 

control using 

worldwide-accepted 

industry standards. 

Scalable and platform 

independent products 

show the evolution 

path into the IT 

environment by 

enhancing your 

installation. 

AC 800F opens up the flexibility of Fieldbus technology to the user. The AC 800F collects and processes diagnostic and process data from four Fieldbus lines, which may be of different types. It does this in addition to the tasks of a “conventional” process station. 

The AC 800F is available in two versions: 

• 4 MB static RAM, 4 MB EPROM 

• 16 MB synchronous dynamic RAM,  8 MB EPROM Up to 4 (different) fieldbus modules can be plugged into the AC 800F. The communication with other controllers runs via Ethernet. 

The AC 800F optionally provides several levels of redundancy:

• device redundancy with 2 AC 800F 

• power supply redundancy (24 V DC) 

• Ethernet communication redundancy  (standard) 

• Cable redundancy for Profibus DP, 

requires external equipment (RLM01)The data protection is made via battery back-up by Ethernet or battery modules with appropriate functionality. 

• Process Station with integrated fieldbus capability 

• 4 high-speed fieldbus lines 

• Supports different fieldbus types, even 

simultaneously: 

PROFIBUS-DP, up to 12 MBd Modbus CAN Foundation Fieldbus H1 (with LD800 HSE) 

• Easy engineering: fully integrated in Control Builder F 

• One unified database for field devices shared by the control level and the Human 

System Interface (HSI) 

• Module recognition with factory and operational parameters 

• Comprehensive diagnostics for proactive maintenance 

• Compact, rugged design 

• Front panel connectors 

• DIN Rail (C-rail) or wall mounting for easy installation 

• Ambient temperature 0-60 °C (32-140 °F) with te AC 800F Controller Redundancy 

Controller redundancy can be achieved by installing two AC 800F. To ensure quick and smooth takeover by the secondary AC 800F in case the primary AC 800F fails, a dedicated redundancy communications link through the second Ethernet module makes sure that both AC 800F are always synchronized. All inputs and outputs are designed to support redundant operation. 

Profibus Line Redundancy 

Using the Redundancy Link Module RLM 01 will do the conversion of one simple, non-redundant Profibus line into tworeciprocally redundant lines. You can position the Redundancy Link Module RLM 01 directly after a Profibus module (master), before a bus segment with several slaves or before an individual slave. PROFIBUS stations with redundant couplers can bedirectly connected to the PROFIBUS set redundant by RLM 01. Stations with only one interface can be optionally assigned to the one or other line. For technical description dates of the Redundancy Link Module RLM 01 see document 3BDD011600R0201. 

An alternative solution to the Profibus line redundancy is to use a Fiber Optic Ring, for example with the OZD Profi 12M module 

from firm Hirschmann AC800F Redundancy together with Profibus Line Redundancy You can achieve both; controller redundancy and Profibus line redundancy by using two AC 800F with one RLM01 each. This topology combines the advantages of controller redundancy with the one of line redundancy as described in the above paragraphs.