The 2604 is a 1/4 DIN plug-in high stability temperature and process controller designed to be used in demanding applications.  It has a dual five digit display and a two line LCD panel for alarm, status and user defined messages.  It employs universal inputs (TC, RTD, DC) with INSTANT ACCURACY™. 

Direct connection of Zirconia probes is also supported for carbon potential control in atmospheric combustion applications. The advanced control algorithm and gain scheduling gives straight line control, even in difficult non-linear applications and automatic tuning simplifies commissioning. 

A setpoint programming option allows storage of up to 50 programs (500 segments, 16 digital events, gauranteed dwell, holdback) and each can profile up to three setpoints. 

The 2604 is available with high speed Modbus® RTU, DeviceNet™ and Profibus®-DP (in the 'f' version) digital communications. The 2604 is available with powerful preprogrammed applications such as melt pressure and carbon potential. 

The 2604 has fixed and modular I/O and can use the 2000 I/O Expander to provide additional input/output connections.  The 2000 I/O Expander is a DIN Rail mounted 24Vdc powered digital I/O expansion unit which uses proprietary serial comms to increase up to 20 each the number of digital inputs and outputs to the 2604. 

Ideal For: 

• High stability, precision and functionality 
• One, two or three control loops 
• PID, valve, ratio, cascade and override control 
• Setpoint programming 
• High speed ModBus®, DeviceNet™ and Profibus® communications 
• Test chambers, autoclaves, kilns, furnaces, forehearths 
• Melt Pressure, Carbon Potential

 Control Modes: 

 Setpoint Programs: 

 Supply Voltages:

 Special Functions:

 Toolkit Blocks:

 Communications: 

3 Control loops PID, On/off and Motorized Valve, Cascade, Ratio & Override 

Up to 50 Programs, 500 segments 16 Event outputs 

85-264Vac, 24Vac/dc 

Melt pressure, carbon potentiall 

Analog & digital operations, Pattern generator, Pulse programmer, Timers and Totalizers 

Modbus® RTU, DeviceNet™, and Profibus®-DP 

The world's most advanced 1/4 DIN controller combining unprecedented control performance with ease of set-up. 

The 2704 Is Ideal For: 

• One, Two or Three Control Loops - PID, Ratio, Override and Cascade Types 
• High Stability, Precision and Functionality 
• All Features of the 2604/2604f 
• Bright Graphical Front Panel 
• Semiconductors, Autoclaves, Vacuum & Glass Furnaces, Environmental Chambers, Ceramic Kilns 
• Pre-Configured Melt Pressure, Carbon Potential, Vacuum Control Applications

The graphical user interface is menu driven via the display and 7 front panel keys, providing extreme flexibility and ease of operation. PV/SP trending allows the user to view both current and historical information on the process variable and programmed setpoint of each loop. Measurement range and timing may be varied. 

The 2704 is available with Modbus®RTU and DeviceNet™ comms while the f version comes with Profibus®-DP comms. Version 5 of the 2704 offers Modbus RTU master communications that enables the 2704 to communicate with 8 slave Modbus RTU devices and a total of 38 parameters. This capability enables powerful lo-cost integrated extrusion control, autoclave or vacuum furnace solutions.

Powerful special process applications such as vacuum control, carbon potential, melt pressure, temperature/humidity, and others are available with local graphical display. Like the 2604, the 2704 has fixed and modular I/O and can communicate via a proprietary two-wire interface with the 2000 I/O expander to increase its digital I/O capability by 10 or 20 each additional inputs and outputs.

 Control Modes: 

 Setpoint Programmer: 

 Supply Voltages:

 Special Functions: 

 Toolkit Blocks:
 

Communications:

3 Control loops PID, On/off and Motorized Valve, Cascade, Ratio & Override 

Up to 50 Programs, 500 segments 16 Event outputs 

85-264Vac, 24Vac/dc 

Melt pressure, carbon potential, temperature/humidity, and vacuum control 

Analog and digital operations, Pattern generator, Pulse pro- grammer, Timers and Totalizers 

Modbus® RTU, , DeviceNet™, and Profibus®-DP