AC 800M is a family of rail-mounted modules, consisting of CPUs, communication modules, power supply modules and various accessories. There are several CPU modules to choose from, ranging from medium processor power and low cost to high processor power and support for full redundancy.

The AC 800M family does also include IEC 61508-SIL3 certified controllers PM857, PM863, PM865 and PM867, which supports controller configurations for: • Safety application • Combined Process Automation and Safety application For updated information regarding System 800xA hardware please visit our 800xA Hardware Selector. In the selector you can compare different communication modules, AC 800M controllers, S800 IO modules, module termination units, 800xA networks equipment, power supplies and voters, panels and also print your own PDF files.

Features / CPUs ：PM851A PM856A PM857 PM858 PM860A 

Article number ：

3BSE066485R1 (PM851AK01) 

3BSE066490R1 (PM856A) 

3BSE088385R1 (PM857K01) 

3BSE088386R1 (PM857K02) 

3BSE082895R1 (PM858K01) 

3BSE082896R1 (PM858K02) 

3BSE066495R1 (PM860AK01) 

Processor Unit： 

PM851AK01 incl: 1 PM851A CPU and required optional items 

PM856AK01 incl: 1 PM856A CPU and required optional items 

PM857K01 incl: 1 PM857 CPU and required optional items 

PM857K02 incl: 2 PM857K01 

PM858K01 incl: 1 PM858 CPU and required optional items 

PM858K02 incl: 2 PM858K01 

PM860AK01 incl: 1 PM860A CPU and required optional items 

Optional items (partly included in Processor Units, see Price List) ：

TP830 Baseplate, TP850 CEX-bus term., TK850 CEX-bus cable, TB807, Modulebus term, Battery RAM backup, TB852/ TB853 RCU-link term, TB851/TB855/TB856 RCU-link cable, SB822 External Battery Unit, TK212A Tool cable, TC562 Short Distance Modem, TK853V020 Modem cable, BC810K02, BC820K02, CEX-bus Interconnection unit; TK851V010 Connection cable, SD831/SD832/SD833/SD853/SD854 Power Supply, SS832 Voting Unit, Mains Breaker Kit, SM811 Supervisory Module and SM812 Supervisory Module.

Features / CPUs ：PM851A PM856A PM857 PM858 PM860A 

Certificates and Standards

CE- marking: Meets EMC directive 2004/108/EC acc. to EN 61000-6-4, EN 61000-6-2 and Low Voltage Directive acc. to EN 61131-2 Electrical Safety: EN 50178, IEC 61131-2, UL 508 (Note! UL 508 not valid for PM858, PM862) Hazardous location: UL 60079-15 (Note! UL 60079-15 not valid for PM858, PM862) RoHS compliance: DIRECTIVE/2011/65/EU (EN 50581:2012) WEEE compliance: DIRECTIVE/2012/19/EU 

Dimensions：Width 119 x Height 186 x Depth 135 mm (4.7 x 7.3 x 5.3 in.) 

Weight (including base)：1100 g (2.4 lbs) 1100 g (2.4 lbs) 1200 g (2.6 lbs) 1200 g (2.6 lbs) 1100 g (2.4 lbs)

Features / CPUs ：PM861A (Classic) PM862 PM863 PM864A

Article number 3BSE018157R1 (PM861K01) 3BSE018160R1 (PM861K02) 3BSE076940R1 (PM862K01) 3BSE081636R1 (PM862K02) 3BSE088381R1 (PM863K01) 3BSE088382R1 (PM863K02) 3BSE018161R1 (PM864K01) 3BSE018164R1 (PM864K02) 

Processor Unit： 

PM861AK01 incl: 1 PM861A CPU and required optional items PM861AK02 incl: 2 PM861AK01 PM862K01 incl: 1 PM862 CPU and required optional items. PM862K02 incl: 2 PM862K01 PM863K01 incl: 1 PM863 CPU and required optional items PM863K02 incl: 2 PM863K01 PM864AK01 incl: 1 PM864A CPU and required optional items PM864AK02 incl: 2 PM864AK01 

Optional items (partly included in Processor Units, see Price List) ：

TP830 Baseplate, TP850 CEX-bus term., TK850 CEX-bus cable, TB807, Modulebus term, Battery RAM backup, TB852/TB853 RCU-link term, TB851/TB855/TB856 RCU-link cable, SB822 External Battery Unit, TK212A Tool cable, TC562 Short Distance Modem, TK853V020 Modem cable, BC810K02, BC820K02, CEX-bus Interconnection unit; TK851V010 Connection cable, SD831/SD832/SD833/SD853/SD854 Power Supply, SS832 Voting Unit, Mains Breaker Kit, SM811 Supervisory Module and SM812 Supervisory Module.