1 Year Warranty
Description
Product Overview
500CPU05 1MRB150081R0001 serves as the rack‑level central processing unit for ABB S500 distributed I/O system, executing user control logic, managing backplane I/O data exchange, and coordinating all communication modules installed within the same S500 rack. It acts as the core logic executor for compact distributed control stations, eliminating the requirement for a separate AC500 main CPU in small‑scale local control cabinets. This architecture delivers cost‑effective distributed processing for retrofit projects where field I/O must be placed close to sensors and actuators while maintaining autonomous local control capability.
Many modernisation projects encounter constraints including limited cabinet installation space, high field‑wiring costs, and the need for partial local autonomy during upper‑level network outages. 500CPU05 1MRB150081R0001 addresses these operational pain‑points by running complete IEC 61131‑3 application programs locally. When communication with upper SCADA fails, local interlock, sequence control and safety‑related logic continue executing without halt. It handles data exchange with S500 I/O modules via internal rack bus and works cooperatively with communication modules to bridge field‑bus devices and plant‑wide monitoring systems. Built‑in hardware watch‑dog and comprehensive channel diagnostics reduce troubleshooting effort for distributed automation deployments.
Technical Specifications
| Parameter name | Parameter value |
|---|---|
| Product model | 500CPU05 1MRB150081R0001 |
| Manufacturer | ABB |
| Product type | S500 Rack Central Processing Unit |
| Supply voltage | 24 V DC ±10 % |
| Typical power consumption | 5.1 W |
| Program execution standard | IEC 61131‑3 |
| Local expandable I/O capacity | Up to 10 S500 series modules |
| Backplane bus | S500 internal rack bus |
| Operating temperature | -20 °C ~ +60 °C |
| Mounting | 35 mm DIN‑rail with dedicated terminal base |
| Protection class | IP20 |
| Dimensions (H×W×D) | 120 mm × 35 mm × 110 mm |
| Weight | 330 g |
| Certifications | CE, UL 508, IEC 61010‑1 |
Key Features and Advantages
local autonomous execution: 500CPU05 1MRB150081R0001 fully executes IEC‑61131‑3 control logic on‑board. If uplink Ethernet connection to central SCADA is lost, local interlocking, sequence control and analogue regulation keep running, avoiding full‑plant stop triggered by remote communication failure. integrated rack resource management: It directly scans S500 backplane bus, synchronising digital and analogue I/O data without external controller mediation. The rack supports mixed deployment of digital, analogue and communication modules, adapting to variable signal quantity demands without cabinet redesign. multi‑module collaborative architecture: Compatible with S500 communication hardware including 500SCM01 1MRB150004R0001 and 500CIM06 1MRB150077R0111. Serial and Ethernet protocol tasks are offloaded onto auxiliary modules, preventing protocol polling loads from raising CPU scan cycle. rich diagnostic feedback: Front‑panel multi‑colour LEDs display run state, program error, bus fault and module mismatch alarms. Diagnostic information can be forwarded to upper monitoring system, enabling remote identification of rack‑level hardware faults without on‑site inspection. retrofit‑oriented engineering workflow: Entire project configuration, logic programming and hardware parameterisation are completed within Automation Builder. Project files can be migrated and reused when expanding or modifying existing racks, cutting re‑engineering workload for upgrade‑focused projects. Hot‑swap compatible terminal bases support non‑stop hardware replacement for non‑safety racks.
500CPU05 1MRB150081R0001
Application Fields
500CPU05 1MRB150081R0001 is deployed in distributed control cabinets across process industry sites, delivering standalone rack‑level control for skids and local process units. In water‑wastewater treatment plants, it controls pumping skids, chemical dosing units and filter‑bank valve sequences. It collects flow, level and water‑quality measurements via S500 analogue and binary I/O modules, performing closed‑loop regulation locally while transmitting trend data to central SCADA.
Within cement, metallurgy and pulp‑and‑paper plants, the unit fits auxiliary equipment control panels for fans, dampers and material‑transport subsystems. It undertakes local interlock and safety‑chain logic, reducing signal cable runs back to main control room and lowering total installation cost during partial equipment retrofits.
For power‑plant auxiliary systems and industrial captive power stations, 500CPU05 1MRB150081R0001 manages local switchgear auxiliary control, cooling‑water pump groups and ventilation systems. It works together with serial and Ethernet communication modules to collect data from power meters and protection devices. It is also well‑suited for packaging machinery, material‑handling stations and tunnel auxiliary automation, where distributed racks need to retain basic operational capacity during central system communication interruptions.
Related Products
- TU508‑S500: Terminal base unit, provides backplane connection and mechanical mounting for 500CPU05 1MRB150081R0001
- 500BIO01 1MRB150005R0001: S500 binary mixed I/O module,配套 signal acquisition within same rack
- 500SCM01 1MRB150004R0001: Serial communication module, expands RS‑485 Modbus‑RTU interface
- 500CIM06 1MRB150077R0111: Multi‑protocol communication interface module, for Ethernet‑based fieldbus connection
- 500AI04: S500 analog input module, collects 4‑20 mA and thermal‑resistance field signals
- 500DO08: S500 digital output module, expands discrete actuator control points
- AC500‑PM572: Main‑rack AC500 CPU, acts as upper‑level controller for multi‑rack distributed systems
- 500CPU04: Previous‑generation S500 rack CPU, can be replaced by 500CPU05 1MRB150081R0001 for hardware upgrade
Installation and Maintenance
pre‑installation preparation: Before installing 500CPU05 1MRB150081R0001, confirm TU508‑S500 terminal base is firmly locked to DIN rail. Verify 24 V DC auxiliary power supply voltage and ripple stay within rated range. Arrange high‑power field wiring separately from backplane and signal cables to minimise electromagnetic interference. Download complete Automation Builder project including logic code, I/O mapping and communication parameters prior to first power‑on, and validate module quantity matching actual rack layout.
maintenance recommendations: Observe front‑panel LED indicators during routine cabinet inspections to capture bus errors or program‑run anomalies early. Inspect terminal screws for loosening caused by cabinet thermal cycling. For live‑rack component replacement, deploy hot‑swap capable base hardware; otherwise cut rack power supply before module removal. When persistent faults occur, check for configuration mismatch and backplane contact conditions before replacing hardware. 500CPU05 1MRB150081R0001 contains no field‑serviceable internal assemblies; defective hardware requires return to authorised service centres.
Product Warranty & Support
Each 500CPU05 1MRB150081R0001 completes factory functional testing, logic execution validation and backplane bus interoperability checks before shipment. Standard manufacturer warranty covers manufacturing defects for 12 months from delivery date. Spare‑part sourcing, firmware updates and remote technical support are available for project configuration debugging, commissioning, FAT and site SAT validation. Application engineers offer assistance for distributed rack layout optimisation, logic‑code review and multi‑module communication troubleshooting. Long‑term spare‑component inventory mitigates hardware obsolescence risk and sustains continuous operation of existing S500 distributed automation installations.
