REVO RT Loop

Multi Zone PID Controller

Each basic module is capable of managing three single (heat) or dual (heat/cool) zones.
Heating is managed via logic outputs connected to external drive units, that allow the control of electric heaters.

• RT Loop can work independently or connected with a PLC. It has been designed to replace traditional panel-mount controllers or to replace PLC PID loops.
• RT Loop consists of one or more control modules, each equipped with communication ports.
  Each module can manage 3 to 9 loops, depending on the number of control cards contained within it, with the possibility of combining different types of modules.
• With RT Loop, 24 loops takes up only 348mm in width.
• Via integrated communication ports or external termination modules, the most popular communication protocols are supported: ModBus RTU, ProfiNet, ModBus TCP, Ethernet IP.
• EMC compliant.
• Up to 24 zones per branch with Fieldbus or 90 zones with Modbus RTU communication.

This series is suitable for industrial applications in the following areas:

• Packaging machines
• Plastic industry applications (extruders and extrusion lines, extrusion heads and control units for hot runner dies)
• Multi-zone ovens
• Furnaces with medium and long wave infrared lamps
• Drying processes with infrared lamps

Main features of the control board

The multi-zone RT Loop system has been developed specifically for temperature control using electric heating elements.
It is a modular system, where each module contains one or more 3-loop control boards.
Each control board includes:

• 3 process inputs configurable as thermocouple or analogue
• 3 SSR outputs for controlling external REVO S static units, for heating control.
• 3 Current sensor inputs for heater break alarm.
• 4 Relays used for alarm or cooling output
• 1 Relay used for start function.
• 1 Digital input

In addition to the standard control functions, each board has advanced functions such as:

• Soft start
• Energy optimisation function, called “ECO”
• Load break diagnostics
• WatchDog on serial communication
• Autotuning
• 100ms sampling time
• Several types of process alarms available

Examples of Modbus RTU systems:

N°24 Zones – Modbus RTU

N°30 Zones – Modbus RTU