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Help CenterHoneywell UDC2800 Universal Digital Controller Specification Agent
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New Power and Flexibility
The UDC2800 Universal Digital Controller packs new powerful features in the popular 1/4 DIN size.
Unmatched application power includes Bluetooth Configuration interface, two universal analog inputs and a Math Algorithm. When these are combined with the Accutune III™ tuning with fuzzy logic overshoot suppression, the result is price/performance leadership.
Application flexibility is assured by the universal analog inputs, universal AC power supply, two digital inputs, a maximum of two analog inputs and four digital outputs, RS485 Modbus RTU or Ethernet 10/100M Base-T TCP/IP communication protocols, simple configuration plus total field upgrade capability for any optional feature.
The key features of the UDC2800 include:
• 2 Universal Analog Inputs
• 0.15% Accuracy
• Fast scanning rate (100ms)
• Up to 4 Output Types
• 2 Digital Inputs
• Math Functions
• Ethernet and Modbus communication
• Bluetooth configuration on mobile device
• NEMA4X and IP66 front face protection
• Multilanguage prompts
• ¼ DIN Size
• Jumper free configuration
Bright displays with multi-language prompts in English, make the operator interface easy to read, understand, and operate. Simple keystrokes let you set operating parameters that meet your process control needs.
Analog Inputs
The UDC2800 has two analog inputs with a typical accuracy of ±0.15% of full-scale input and a typical resolution of 16 bits. Both analog inputs are sampled ten times per second (every 100 ms).
The first, or Process Variable input, can be one of the various thermocouple, RTD, or linear actuations. Linear actuations have thermocouple, RTD characterization capability as a standard feature. Linear actuations also have square root capability.
The optional second input is isolated and accepts the same actuations as input one.
All actuations and characterizations are keyboard configurable. Cold junction compensation is provided for thermocouple type inputs. Upscale, downscale or failsafe sensor break protection is keyboard configurable. A configurable digital filter of 0 to 120 seconds provides input signal damping.
Thermocouple Health - In addition to the standard configurable upscale, downscale or failsafe output burnout selections, the condition of the thermocouple can be monitored to determine if it is good, failing or in danger of imminent failure.
Math Functions
Algorithm—A pre-configured algorithm is available for easy implementation. This includes the capability of using a Ratio and Bias with any input. You can select from the following menu:
• Feedforward Summer—Uses either input, followed by a Ratio/Bias calculation, summed directly with the computed PID output value to provide a resultant output to the final control element.
• Weighted Average —Computes the weighted average of a PV or SP for the control algorithm from two inputs.
• Feedforward Multiplier—Uses any input, multiplied by the calculated PID output to provide a resultant output which is sent to the final control element.
• Summer/Subtractor—Will add or subtract inputs with the result used as the derived PV.
• Multiplier/Divider—Uses the analog inputs to calculate a derived PV. Available with or without Square Root.
• Input High/Low Select—Specifies the PV input as the higher or lower of the two inputs.
Digital Inputs
Two* isolated digital inputs are provided for remote dry contact closure to select one of the following actions:
• Manual control mode.
• Local setpoint 1, 2, 3, 4.
• Direct controller action.
• Hold SP Ramp/Program.
• Select PID set 2, 3.
• PV = Input 2.
• ReRun - SP Ramp/Program.
• Run - SP Ramp/Program.
• External program reset.
• Disable PID integral action.
• Manual mode, failsafe output.
• Disable keyboard.
• Output 1 = Fixed value
• Start Timer.
• Auto/Manual Station
• Initiate Tuning.
• Initiate PV Hot Start.
• Output 1 tracks Input 2.
• To Remote Setpoint.
• PID reset feedback via Input 2
• Purge
• Low Fire
• To Latching Manual Mode.
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