AC 800M process control
Executes control applications and manages local, optical and CEX-Bus resources in an AC 800M controller station.
ABB PM861AK01 AC 800M Processor Unit with CPU Redundancy
ABB PM861AK01 AC 800M processor
PLC processor with CPU redundancy
ABB AC 800M processor unit
Brand Name:
ABB
Model Number:
PM861AK01
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Product Details
ABB Article Number:
3BSE018157R1
Highlight:
ABB PM861AK01 AC 800M processor
,PLC processor with CPU redundancy
,ABB AC 800M processor unit
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Product Description
ABB · PM861AK01
ABB PM861AK01 AC 800M Processor Unit with CPU Redundancy
ABB PM861AK01 AC 800M processor kit with PM861A CPU, TP830 baseplate, CEX-Bus, ModuleBus and RCU-Link terminators, memory-backup battery and redundancy support.
TypeAC 800M processor unit kit
SystemABB AC 800M / System 800xA
Focus48 MHz, 16 MB, redundant CPU
BrandABB
PM861AK01 availability, lead time and order review
Send RFQProduct Introduction
PM861AK01 is the single-processor AC 800M kit based on the PM861A CPU. The package includes the TP830 baseplate, CEX-Bus, ModuleBus and RCU-Link terminators, plus a memory-backup battery.
Engineering note: ABB records PM861A as a Classic-lifecycle controller with replacement available. Migration must preserve controller release, redundancy pairing and the engineered I/O/communication architecture.
Technical Specifications
Select a category to view its specifications. All categories are closed by default.
Identification & packageView 6 specificationsHide specifications⌄
| ABB article number | 3BSE018157R1 |
|---|---|
| Processor | PM861A CPU |
| Baseplate | TP830, 115 mm |
| Included terminators | TB850 CEX-Bus, TB807 ModuleBus, TB852 RCU-Link |
| Memory backup | Battery 4943013-6 |
| High Integrity controller | No |
Processor & memoryView 6 specificationsHide specifications⌄
| Clock frequency | 48 MHz |
|---|---|
| Memory (RAM) | 16 MB |
| RAM available for application | 7.155 MB |
| Processor type | MPC860 |
| Flash storage for application/data | Yes |
| 1000 Boolean operations | 0.23 ms |
Redundancy, communication & I/OView 6 specificationsHide specifications⌄
| CPU redundancy | Supported |
|---|---|
| Maximum switchover time | 10 ms |
| Ethernet channels | 2 × 10 Mbit/s RJ45 |
| RS-232C interfaces | 2 |
| Communication modules on CEX-Bus | 12 |
| ModuleBus I/O capacity | Maximum 96 non-redundant / 84 redundant I/O modules |
Power, environment & sizeView 7 specificationsHide specifications⌄
| Power supply | 24 V DC (19.2–30 V DC), max 5% ripple |
|---|---|
| 24 V current, typical / max | 250 / 430 mA |
| Typical power dissipation | 6.0 W |
| Operating / storage temperature | +5 to +55 °C / −40 to +70 °C |
| Protection class | IP20 |
| Dimensions | 119 × 186 × 135 mm |
| Weight including base | 1200 g |
Compatibility & Replacement
Lifecycle status. ABB lists PM861AK01 as a Classic-lifecycle CPU with replacement available and identifies PM858 among the newer controller series for PM861A/PM864A migration.
Migration conditions. ABB states that PM858 and PM862 can be used from System 800xA 6.0.2 and that both processor modules in a redundant pair must be the same type. Confirm the exact replacement package in the ABB lifecycle plan for the installed project.
Applications & Fault Scenarios
Redundant controller service
Supports paired CPUs where loss of the primary processor should transfer control to the healthy partner.
CPU remains in fault or stop
Capture LEDs and controller diagnostics, then check power, firmware/project compatibility, baseplate and bus termination.
Backup CPU unavailable
Verify both processors are the same approved type and inspect RCU-Link hardware and redundancy synchronization.
Intermittent I/O or network alarms
Separate CPU, Ethernet, CEX-Bus and ModuleBus symptoms before replacing the processor; each path has its own diagnostics.
Independent spare-parts support
Amikon can review the exact part number, installed system, quantity, destination and required date before quotation.
Pre-outage checkpoints
- Back up the project and firmware record.
- Record primary/backup state and RCU-Link status.
- Inventory CEX-Bus modules and ModuleBus I/O.
- Confirm the ABB lifecycle migration package for this project.
Amikon Supply & Service
Independent multi-brand support for maintenance, outage and legacy-system requirements.
Order reviewPart number, quantity, destination, required date and system model checked.
Inspection & testingLabel, condition and serial checks; testing when agreed.
Packing & dispatchProtective export packing and delivery coordination.
DOA, returns, warranty & supportAfter-sales review under the quoted return and warranty terms.
Request for Quotation
- Part Number
- Quantity
- Destination
- Required Date
- Machine / System Model
Direct RFQ contactMiya ZhengIndustrial automation spare-parts support
Emailsales@amikon.cn
WhatsApp+86 180 2077 6792
Websitedcscontroller.com
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These models are listed only as independent sourcing references. They are not substitutes for PM861AK01. Compatibility, configuration and stock must be confirmed separately for each item.
PM861AK01 FAQ
What must be checked when buying ABB PM861AK01 for a redundant CPU pair?
Confirm that both processors in the redundant pair are the same approved type and review the installed RCU-Link and project context against ABB documentation.
Can ABB PM861AK01 be ordered by processor family name alone?
No. Use the full PM861AK01 identity, article information and installed AC 800M configuration; closely related processor variants should not be treated as interchangeable.
Can current stock, condition and lead time for ABB PM861AK01 be confirmed from this page?
No. Stock, condition, inspection scope and lead time change by offer and must be confirmed in the live quotation for ABB PM861AK01.
What pre-shipment evidence can I request for ABB PM861AK01?
Request clear label, condition and serial-number photos plus the agreed inspection or testing record for ABB PM861AK01 before dispatch.
How should I submit an urgent shutdown requirement for ABB PM861AK01?
Send the exact part number, quantity, destination, required date, machine or system model and failure context. Priority routing starts after the ABB PM861AK01 identity is confirmed.
What DOA, return and warranty terms apply to ABB PM861AK01?
They are defined in the quotation. If ABB PM861AK01 arrives DOA or does not match the purchase order, report the serial number, label, packaging and fault evidence promptly for after-sales review.
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