The Freelance DCS can be easily scaled up from a small system of a few I/Os to a large system of up to thousands of I/Os. Expansion can be done with minimal engineering effort.
A Freelance system can consist of one or combination of several AC 700F
, AC 800F
and/or AC 900F
controllers. It can be extended with fieldbuses, field devices and remote I/Os. With AC 800F and AC 900F, you have the option of configuring your entire system in redundancy.
Scalable system architecture
As shown in the architecture drawing, Freelance can go from a typical OEM offering with an AC 700F controller, a Panel 800 and around 50-100 I/Os. AC 700F can have up to eight direct I/O modules connected to it or have remote I/Os connected via PROFIBUS. Modbus RTU and TCP are also supported. The Freelance Lite offering can typically have an AC 700F or AC 900F controller and will be in the 250 to 400 I/O range with possibly a combination license and a few operator stations. This can ramp up to the Freelance Standard and Premium offerings with the AC 800F and/or AC 900F, with or without redundancy. Freelance can go up to thousands of I/Os. Connections include Foundation Fieldbus, PROFIBUS and Hart as well. There is also the possibility to connect to super-visory control stations running on ABB 800xA system.
- The AC 700F controller has a small footprint that supports PROFIBUS. It can support up to eight direct I/O modules. The AC 700F optionally supports PROFIBUS line redundancy.
- The AC 800F controller can be equipped with up to four field-bus modules of type serial, PROFIBUS, FF HSE or Freelance CAN bus. Optionally, AC 800F supports redundancy.
- The new AC 900F controller also supports PROFIBUS and truly extends the hardware portfolio of the Freelance distributed control system. The AC 900F modular controller offers expanded flexibility via a pluggable SD card, more Ethernet ports, redundancy options for high availability and power enough for around 1,500 I/Os per controller.
All controller types can be used in combination in a single system. They are suitable both for installation in the control room and for use in junction boxes directly in the field.