AC 900F Controller

Brand: ACF5000

AC 900F Controller

Part Number: AC 900F Brand: ACF5000


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With the new, award-winning AC 900F controller, the Freelance DCS provides more power, speed and functionality than ever before.

Following years of experience in automation and control products, this newly released controller truly extends the hardware portfolio of the Freelance distributed control system (DCS).

The AC 900F controller consists of a CPU module, which is the main component.

According to the application and requirements, fieldbus modules and I/O modules can be added to the controller.

Optionally, AC 900F supports redundancy.

The AC 900F consists of:
  • Plus CPU module PM 904F who expands the capability of the Standard version PM 902F and supports up to four communication interfaces for PROFIBUS or CAN as well as more application memory.
  • Standard CPU module PM 902F with four Ethernet interfaces, one diagnostic interface, two serial interfaces and display unit (optional). It supports up tp two communication interfaces.
  • Lite CPU module PM 901F with three Ethernet interfaces, one diagnostic interface, two serial interfaces and display unit (optional). It supports up to two communication interfaces.
  • Up to ten S700 I/O modules directly attached on terminal units
The controller supports remote I/Os, transmitters, actuators, drives and other devices, for example through PROFIBUS and other fieldbus protocols.
  • More power than any previous generation controller
  • Up to four (PM 904F) or up to two (PM 902F/PM 901F) communication interfaces for PROFIBUS or CAN
  • Connectivity with 2 serial ports and 4 Ethernet ports (3 with PM 901F)
  • SD card support for easy controller backup and firmware update
  • Ethernet based protocols: Modbus TCP, IEC 60870-5-104
  • G3 compliant for use in harsh environments
  • Optional LCD for easy access to status and diagnostics information
  • Small footprint
  • Optional redundancy for higher availability



Certifications & Approvals

  • EMC
  • RoHS Directive
  • CE, c(UL)us, Class 1 Div. 2, ISA-S71.04, NAMUR

Operating Temperature

  • -20° to 70° C (-4° to 158° F)
  • Battery: -40° to 85° C (-40° to 185° F)

Storage Temperature

  • AC 900F & Battery: -40° to 85° C (-40° to 185° F)
  • TD 951F inserted: -25° to 70° C (13° to 158° F)


  • Maximum 93 %, without condensation

Air Pressure

  • Operating: < 2,000 m (2,187 yd.)

Environmental Protection

  • IP20


  • Horizontal
  • Modules: Wall Mounting or DIN Rail


  • 2 g, 2 to 150 Hz


  • 15 g, 11 ms, half-sinusoidal

Supply Voltage

  • 24 Vdc


  • Power PC (II Pro family)


  • PM 904F: 48 MB (16 MB battery buffered)
  • PM 902F: 24 MB (8 MB battery buffered)
  • PM 901F: 11 MB (3 MB battery buffered)


  • 64 x 128 Dot Matrix LCD (Optional)

Serial Interface

  • 2 Serial interfaces: RS-232 or RS-485 (From 600 bps to 38400 bps)
  • 1 Pluggable terminal block with spring Connection for Modbus ASCII/RTU, Telecontrol IEC 60870-5-10
  • 1 Serial interface: RS-232, D-SUB, 9-Pole, Female diagnostics and radio clock
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