Compact AC 800M control
Runs smaller control applications where a single CPU and limited CEX-Bus expansion meet the engineered capacity.
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| Categories | ABB PLC |
|---|---|
| Model Number: | PM851AK01 |
| Brand Name: | ABB |
| ABB Article Number: | 3BSE066485R1 |
| Company Info. |
| AMIKON LIMITED |
| Verified Supplier |
| View Contact Details |
| Product List |
ABB · PM851AK01
ABB PM851AK01 AC 800M processor package with PM851A CPU, TP830 baseplate, CEX-Bus and ModuleBus terminators, memory-backup battery and single-CPU operation.
PM851AK01 availability, lead time and order review
Send RFQPM851AK01 is a single-CPU AC 800M processor package for compact control applications. ABB supplies the PM851A CPU with the TP830 baseplate, bus terminators and memory-backup battery.
Select a category to view its specifications. All categories are closed by default.
| ABB article number | 3BSE066485R1 |
|---|---|
| Processor | PM851A CPU |
| Baseplate | TP830, 115 mm |
| Included terminators | TB850 CEX-Bus and TB807 ModuleBus |
| Memory backup | Battery 4943013-6 |
| License | No license included |
| Clock frequency | 24 MHz |
|---|---|
| Package memory | 12 MB in current ABB product catalogs |
| Processor type | MPC860 |
| Flash storage for application/data | Yes |
| 1000 Boolean operations | 0.46 ms |
| Application-program cycle | Down to 1 ms |
| CPU redundancy | No |
|---|---|
| Ethernet channels | 1 × 10 Mbit/s RJ45 |
| Communication modules on CEX-Bus | 1 |
| ModuleBus I/O clusters | 1 electrical + 1 optical |
| ModuleBus I/O capacity | Maximum 24 I/O modules |
| High Integrity controller | No |
| Power supply | 24 V DC (19.2–30 V DC), max 5% ripple |
|---|---|
| 24 V current, typical / max | 180 / 300 mA |
| Typical power dissipation | 4.32 W |
| Power reservoir | Internal 5 ms for controlled power-down |
| Dimensions | 119 × 186 × 135 mm |
| Weight including base | 1100 g |
| Protection class | IP20 |
Confirmed package scope. ABB identifies PM851AK01 as a single PM851A processor package for AC 800M and Compact Product Suite applications.
Capacity boundary. ABB specifies one Ethernet channel, one CEX-Bus communication module and no CPU redundancy. Confirm the existing project stays within those limits.
Runs smaller control applications where a single CPU and limited CEX-Bus expansion meet the engineered capacity.
Fits isolated or packaged control duties that do not require a redundant processor pair.
Check the single Ethernet path, 24 V supply, IP settings and CPU state; there is no second network channel to mask a path failure.
Confirm that the project uses no more than the one communication module supported by PM851A.
Compare project memory, I/O count and task load with the PM851A limits before treating performance symptoms as hardware faults.
Amikon can review the exact part number, installed system, quantity, destination and required date before quotation.
Independent multi-brand support for maintenance, outage and legacy-system requirements.
These models are listed only as independent sourcing references. They are not substitutes for PM851AK01. Compatibility, configuration and stock must be confirmed separately for each item.
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