Beckhoff CX9001-1001

Technical Specifications

• Mounting Standard: 35 mm DIN top hat rail vertical mounting
• Overall External Dimensions (W × H × D): 59 mm × 100 mm × 91 mm
• Net Unit Weight: 0.25 kg (0.86 lbs)
• Primary Power Supply Input: 24 V DC, allowable voltage tolerance -15% / +20%
• Maximum Continuous Power Consumption: 6.5 W
• Main Processor Core: Intel IXP420 XScale ARM926EJ-S CPU, fixed 533 MHz clock frequency
• Internal System RAM: 128 MB non-expandable DDR industrial memory
• Internal Boot Flash Storage: 32 MB non-expandable onboard flash memory
• Non-Volatile NOVRAM: 128 KB for persistent PLC variable storage without external power
• Real-Time Clock: Exchangeable battery-backed RTC for timestamp and system scheduling
• Ethernet Communication Interfaces: 2 × RJ45 10/100 Mbps ports with integrated internal network switch
• Fieldbus I/O Interface: K-bus / E-bus terminal bus master interface, maximum 2 A bus supply current
• I/O DPRAM Data Buffer: 4 KB dedicated dual-port RAM for K-bus real-time data exchange
• Operating System: Microsoft Windows CE 5.0 embedded real-time OS
• Control Runtime Software: TwinCAT 2 CE PLC real-time control environment
• Diagnostic LED Indicators: 1 power status LED, 2 LAN activity LEDs, 1 K-bus communication LED, 1 flash access LED
• Protection Class: IP20 internal cabinet installation rating
• Operating Ambient Temperature: 0 °C to +50 °C
• Storage Temperature Band: -20 °C to +70 °C
• Relative Humidity Operating Range: 5% – 95% RH, non-condensing atmosphere
• Dielectric Strength Rating: 500 V AC isolation between power supply and internal control electronics

Function Features

1. Fanless fully passive cooling design eliminates mechanical fan wear and dust ingress failure modes
2. TwinCAT 2 CE real-time PLC runtime delivers standard IEC 61131-3 programming language support (LD, FBD, ST, SFC)
3. Native K-bus / E-bus EtherCAT terminal bus master function for direct connection of Beckhoff digital/analog I/O terminal modules
4. Dual integrated Ethernet ports with internal switch enable simultaneous connection to local HMI and factory supervisory network without external network hardware
5. 128 KB NOVRAM persistent memory retains PLC production variables, recipe parameters and fault logs during complete power loss events
6. Built-in BACnet/IP protocol stack supporting client and server operation for building HVAC automation integration
7. Comprehensive system diagnostic LED array visualising power, network, bus communication and flash storage operating status
8. Exchangeable RTC backup battery for long-term accurate timestamp logging without external power supply

Performance Parameters

• TwinCAT PLC minimum cycle time: 1 ms
• K-bus terminal bus data refresh latency: < 200 μs
• Ethernet TCP/IP packet processing latency: < 8 ms
• Maximum K-bus terminal module expansion count: 64 terminal modules
• NOVRAM data retention lifespan: Minimum 10 years without external power supply
• Flash memory program write cycle limit: 100,000 erase/write cycles
• Processor real-time task scheduling jitter: < 10 μs under nominal system load

  Material Composition

  • Outer housing: Black extruded aluminum alloy with matte oxidation anti-corrosion surface finish
  • Internal circuit board: Multi-layer FR4 high-temperature industrial printed circuit board
  • Communication connectors: Gold-plated RJ45 Ethernet sockets, spring-clamp power terminals
  • Storage components: Industrial SLC NAND flash chip, NOVRAM memory chip
  • Cooling structure: Integrated aluminum extrusion passive heat sink integrated with casing
  • Indicator components: High-brightness SMD industrial status LEDs
  • DIN rail fixture: Reinforced PA66 glass-filled plastic locking clip with metal spring

  Structural Characteristics

  • Narrow vertical DIN rail mounting form factor for compact control cabinets
  • Front panel layout: Dual RJ45 Ethernet ports, full status LED array, concealed RTC battery access cover
  • Bottom panel layout: 24 V DC spring-clamp power terminal, K-bus/E-bus terminal bus expansion port
  • Fully enclosed PCB compartment with convection vent slits for passive heat dissipation
  • Internal hardware zoning: Processor zone, bus communication zone, persistent memory zone
  • Integrated internal 2-port Ethernet switch chip inside housing, no external switch required
  • IP20 protection rating, exclusively for installation inside sealed industrial control cabinets
  • Tool-free DIN rail mounting and disassembly via side plastic lock clip

  Working Principle

  1. Regulated 24 V DC power input supplies internal isolated power conversion circuits for CPU, bus communication and memory modules
  2. ARM926EJ-S XScale processor runs Windows CE 5.0 embedded OS and TwinCAT 2 CE real-time PLC runtime with hard real-time scheduling
  3. K-bus/E-bus master chip establishes high-speed bidirectional data exchange with series-connected Beckhoff I/O terminal modules, collecting discrete/analog field signals and outputting control commands
  4. Dual Ethernet ports with built-in switch separate local machine HMI communication and upper factory MES/monitoring network traffic
  5. NOVRAM memory chip continuously stores critical PLC variables, production recipes and fault event timestamps without external power supply support
  6. Hardware watchdog timer continuously monitors CPU execution state; triggers safe stop logic and fault LED alarm upon processor lockup or program crash
  7. Battery-backed RTC module generates uniform timestamps for all production logs, bus communication errors and system power cycle events

  Advantage Highlights

  1. Fanless passive cooling structure achieves maintenance-free 24/7 continuous long-term operation
  2. Native TwinCAT IEC 61131-3 runtime eliminates additional PLC hardware for small automation stations
  3. Built-in K-bus/E-bus master directly drives Beckhoff standard I/O terminal series without auxiliary bus coupler
  4. Internal dual-port Ethernet switch reduces cabinet space and extra network hardware procurement cost
  5. Independent NOVRAM persistent memory prevents loss of key production parameters during full power outage
  6. Compact slim DIN rail design fits ultra-small wall-mounted control enclosures for packaging, building automation equipment
  7. Low power consumption minimizes cabinet heat accumulation in densely packed control panels

  Applicable Industries

  Building HVAC & lighting automation, small packaging machinery, lab test bench control, compact conveyor automation, retail vending equipment control, small water treatment skids, low-axis material handling equipment, intelligent building substation control panels

  Installation Requirements

  1. Vertically mount unit on standard 35 mm DIN top hat rail, fully engage side locking clip to avoid sliding during vibration
  2. Reserve minimum 40 mm vertical clearance above and below unit for unobstructed convection cooling airflow
  3. Install only inside IP54 or higher rated sealed control cabinets to block dust, moisture and corrosive ambient gas
  4. Separate power wiring and Ethernet/K-bus shielded cables into independent cable trunking with minimum 5 cm separation gap
  5. Connect aluminum housing protective earth lug to cabinet main protective earth busbar using 1.5 mm² copper conductor
  6. Do not install adjacent to high-power resistors, brake resistors or variable frequency drives with high heat radiation
  7. Keep K-bus/E-bus terminal bus wiring length below maximum rated 10 meters for stable communication performance

  Usage Notes

  1. Complete full TwinCAT PLC program and recipe backup to external storage before executing firmware or OS upgrade
  2. Avoid continuous operation above +50 °C ambient temperature to prevent CPU thermal throttling and flash memory aging acceleration
  3. All Ethernet and K-bus communication wiring must use shielded twisted pair cables with single-point shielding grounding at cabinet earth bar only
  4. Replace internal RTC backup battery every 4 years to eliminate timestamp failure during power loss events
  5. Do not connect unisolated 24 V DC field sensor power supplies directly to K-bus terminal bus to avoid ground loop damage
  6. Quarterly clean casing cooling vent slits with dry compressed air to remove accumulated dust blocking heat dissipation channels
  7. Only deploy official Beckhoff TwinCAT CE compatible firmware; third-party modified OS packages will cause permanent bus communication hardware damage