Extrusion Melt Pressure Photographic film Solid extrusion Wire coating Specification Sheet The 2704MP is a fully programmable melt pressure controller, suitable for precision pressure control in the plastic extrusion industries. Melt Pressure control Suitable for 4 or 6 wire transducers Pre-screen pressure monitor and alarm Pressure alarms Simple calibration Field communications options In its basic format the 2704MP standard hardware includes an input for melt pressure measurement, an analogue output to drive the extruder screw and alarms to detect high and low pressure conditions. Additionally, a second pressure input can be connected providing the facility to provide a differential pressure alarm across the screen. Automatic transducer calibration procedures and 5Vdc or 10Vdc transducer power supplies are provided for both inputs. For standard applications, controllers are shipped pre-configured to the users specification, using a simple to complete order code. User customisation can be achieved by reconfiguring the controller via its front panel interface or Eurotherm’s iTools configuration software. The 2704MP is fully compatible with the standard 2704 process controller; data sheet number HA026669. Post-Screen Pressure 5/10Vdc Shunt Calibration Txdr Supply Extruder Drive Alarm Detection Pre-Screen Pressure Low Pressure High Pressure High High Pressure Deviation Alarm Screen Blocked Txdr Supply •EUROTHERM FLEXIBLE SOLUTIONS

Extrusion control system In combination with the Mini8 DIN rail controller, a very powerful low cost extrusion control system can be implemented. The 2704MP acts as the master melt pressure controller. It also provides an operator interface to view parameters and change setpoints of the temperature zones implemented in the Mini8. Each Mini8 base unit can implement up to 8 control loops. 10 temperature zones can easily be displayed and supervised by the 2704MP. Additionally, extra parameters such as extruder Amps and RPM can be measured by the Mini8 and displayed on the 2704MP. For more information...

Pressure alarms Four alarms are pre-configured and ready for use. A high alarm, high-high and low alarm for the main melt pressure measurement and a differential alarm between the two pressure measurements to indicate blockage of the screen. The output of this alarm can be used to initiate an automatic screen change. Field communications The modular build of the 2704 provides the user with a selection of communication protocols. Modbus RTU, Profibus and DeviceNet are all available for connection to supervisory computers or programmable logic controllers. Additionally, a Modbus master port can...

ORDERING CODE Controller Type Supply Voltage Pressure Inputs Input 1 mV Elec High Control Output Standard Profibus Standard Profibus High voltage Low voltage Notes: 1. Basic controller includes 8 digital registers, 4 timers and 4 totalisers. Standard configuration uses some timers and logic registers. 2. Toolkit 1 includes 16 analogue, 16 digital, pattern generator, digital programmer, analogue switch and 4 user values. 3. Toolkit 2 includes Toolkit plus extra 8 analogue, 16 digital and 8 user values. 4. Max. electrical input range 0 to 80mV. 5. Max. display range -9999 to 99999. 6. Specify decimal...