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AC 900F controller

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:

  • Standard CPU module PM 902F with four Ethernet interfaces, one diagnostic interface, two serial interfaces and display unit (optional)
  • Lite CPU module PM 901F with three Ethernet interfaces, one diagnostic interface, two serial interfaces and display unit (optional)
  • Up to ten S700 I/O modules directly attached on terminal units
  • A maximum of two fieldbus interface modules

The controller supports remote I/Os, transmitters, actuators, drives and other devices, for example through PROFIBUS and other fieldbus protocols.

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Benefits
Technical Data
Services
  • More power than any previous generation controller
  • 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
 AC 900F Overview of Technical Data
 CPU Power PC (II Pro family)
 RAM  8 MB SRAM battery backed
16 MB DDR-RAM
 SD card support For controller backup and firmware update
 Display 64x128 Dot Matrix LCD (optional)
Task execution Cyclic (configurable cycle times from 5 ms)
Event driven (predefined events)
As fast as possible (PLC mode)
 Serial interface 2 serial interfaces: RS-232 or RS-485
(from 600 bps to 38400 bps)
1Pluggable 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
Onboard network interfaces AC 900F Standard (PM 902F) 4 Ethernet interfaces (RJ45):
  • 3 for Modbus TCP and Telecontrol IEC 60870-5-104
  • 1 for redundancy link, 1 for ControlNet
Onboard network interfaces AC 900F Lite (PM 901F) 3 Ethernet interfaces (RJ45):
  • 2 for Modbus TCP and Telecontrol IEC 60870-5-104
  • 1 for redundancy link, 1 for ControlNet
 Fieldbus interfaces  2 slots for Fieldbus interface modules: PROFIBUS (CM 772F, CI 930F)
 Max. number of direct I/O modules  10 I/O modules per controller
 Ambient temperature (operation)  -20 … +70°C (-4 ... 158 °F), no forced cooling required
 Ambient temperature (storage)  -40 … +85°C (-40 ... +185°F)
 Certificates  CE, c(UL)us, Class 1 Div 2, ISA-S71.04
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