PM861AK01 3BSE018157R1 ABB DCS processor unit

• Brand
  ABB
• Model
  PM861AK01
• Order Number
  3BSE018157R1
• Country of Origin
  Sweden
• HS Code
  8537109100
• Dimensions
  115 mm (W)×160 mm (H)×130 mm (D)
• Weight
  1.15 kg
• Operating Temperature
  0°C ~ +60°C
• Storage Temperature
  -40°C ~ +70°C
• Warranty
  12 month
• Product Status
  New and original
• Product Name
  AC 800M Processor Unit Complete Kit

ABB PM861AK01 3BSE018157R1 Technical Specification Document

Electrical Parameters

1.Rated Input Voltage: DC 24V, allowable fluctuation range: 19.2V ~ 30V DC (±20% tolerance)

2.Operating Current: Typical 250mA @ 24VDC; Max operating current: 430mA @ 24VDC

3.Power Consumption: Typical power dissipation 6W; Maximum power consumption 10.3W

4.Backup Power: 3.6V lithium battery for real-time clock and program data retention during power outage

5.Withstand Insulation Voltage: 500V AC isolation voltage for internal circuit

Core Hardware Configuration

1.Processor: 32-bit PowerPC CPU, main frequency 48MHz

2.RAM: 16MB for application program & real-time operation data

3.Flash Memory: 2MB non-volatile storage for system firmware

4.Instruction Execution Speed: Less than 0.15μs for single Boolean instruction; PLC program scan cycle: 0.5~1ms for 1000 control instructions

PM861AK01 3BSE018157R1 ABB  Product Core Advantages

1. Complete Kit Integrated Configuration: The package is equipped with baseplate, bus terminators, backup battery and power terminals, realizing plug-and-play installation, greatly shortening on-site debugging cycle .

2. Supports CPU Redundant Hot Backup: Can build dual CPU hot standby system, support hot swap maintenance without overall system shutdown, greatly improve equipment operation availability.

3. Deterministic Real-time Control: Ultra-short program scanning cycle ensures high-precision closed-loop control, suitable for high-demand process production control scenarios.

4. Abundant Built-in Communication Interfaces: Dual independent Ethernet control network ports + two isolated RS232 serial ports, compatible with Modbus RTU, CEX-Bus, ModuleBus and RCU-Link industrial buses, freely expand CI series communication adapter modules to access Profibus, DeviceNet and other field buses.

5. Powerful On-board Diagnostic Function: Front panel LED indicators display running status, fault alarm, I/O bus abnormal state; built-in embedded web server supports remote fault diagnosis and performance data viewing.

6. Online Program Modification: Support online downloading and editing control programs without stopping the running control task, avoid production interruption caused by program upgrade.

7. Compact DIN Rail Structure: Small occupied cabinet space, good heat dissipation design, stable operation under long-time high-load industrial working condition.

PM861AK01 3BSE018157R1 ABB  Wiring & Connection Operation Guide

1. Main Power Wiring

The 4-core power terminal (Model:3BSC840088R4) matches TP830 baseplate power interface

Wiring Definition: Positive pole connects DC24V+, negative pole connects DC24V-, two grounding terminals connect cabinet protective ground respectively

Wiring Operation: Fix power cable into terminal with screwdriver, ensure reliable contact to prevent loose wiring voltage drop

2. Ethernet Control Network Wiring

Two RJ45 CN1/CN2 Ethernet ports for redundant control network connection

Use industrial shielded Ethernet cable: Core wire connects RJ45 pin terminal, shielding layer single-end grounded inside control cabinet to restrain industrial electromagnetic interference

Two network ports can be connected to two independent control network loops for network redundancy

3. Serial Communication Port Wiring

COM3 Port: Standard RS232 serial interface, used for local programming download, upper computer debugging connection

COM4 Port: Electrically isolated RS232 interface, specially for ABB Control Builder M configuration tool connection

Serial wiring follows standard RS232 cross line wiring definition, shield cable ground at one side only

4. Backplane Bus & I/O Expansion Wiring

CEX-Bus, ModuleBus, RCU-Link buses need to install matched TB850, TB807, TB852 terminal resistors respectively at the bus terminal position as accessory equipped in the kit

The backplane golden finger of CPU module is inserted vertically into TP830 baseplate ModuleBus slot to realize communication connection with S800 series I/O module rack

All bus cables must adopt double-shielded industrial bus cables, both ends need grounding treatment according to ABB official wiring specification

5. Backup Battery Installation Wiring

Install the matched 4943013-6 lithium battery into the dedicated battery slot on CPU mainboard

Correct positive and negative polarity must be followed for installation; wrong polarity will cause RTC clock and program data loss risk

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