Honeywell UDC2800 Technical Information
Technical Information
UDC2800 Universal Digital Controller
Specification
51-52-03-49
October 2020
, Version 1.0
UDC2800 Universal Digital Controller Specification, 51-52-03-49
Revision History
Revision Date Description
1.0 October 2020 UDC2800 Universal Digital Controller software release and New hardware
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UDC2800 Universal Digital Controller Specification, 51-52-03-49
Table of Contents
1. Overview .......................................................................................................................................................................... 4
Analog Inputs ........................................................................................................................................................................ 5
Math Functions ..................................................................................................................................................................... 5
Digital Inputs ......................................................................................................................................................................... 5
Outputs and Control .............................................................................................................................................................. 6
Alarms ................................................................................................................................................................................... 6
Communication ..................................................................................................................................................................... 7
Miscellaneous Features ........................................................................................................................................................ 7
Operator Interface ................................................................................................................................................................. 8
Physical Description .............................................................................................................................................................. 8
2. Operator Interface ........................................................................................................................................................... 9
3. PC Software and Mobile Device App ........................................................................................................................... 11
Features .............................................................................................................................................................................. 11
Bluetooth Communications ................................................................................................................................................. 11
4. Ethernet Communications ........................................................................................................................................... 12
5. Specifications ............................................................................................................................................................... 12
Design ................................................................................................................................................................................. 12
Environmental and Operating Conditions ........................................................................................................................... 15
Input Actuations .................................................................................................................................................................. 16
General Reference Data ..................................................................................................................................................... 17
6. Model Number Interpretation ....................................................................................................................................... 18
7. Dimensions ................................................................................................................................................................... 19
8. Wiring Diagram ............................................................................................................................................................. 20
9. Ordering Information .................................................................................................................................................... 21
10. Warranty/Remedy ..................................................................................................................................................... 21
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UDC2800 Universal Digital Controller Specification, 51-52-03-49
1. Overview
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.
Figure 1 - UDC2800 Universal Digital Controller
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.
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UDC2800 Universal Digital Controller Specification, 51-52-03-49
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.
• PV Hold
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UDC2800 Universal Digital Controller Specification, 51-52-03-49
Also, the digital inputs can allow one of the following selections to be combined with one of the above selections:
• Select PID set 2.
• Direct controller action.
• Local setpoint 1, 2, 3, 4.
• Disable Accutune
• To Run – SP Ramp/Program
*The 2nd Current Output and the 2nd Digital Input are mutually exclusive. Selection is made via a keyboard entry.
Outputs and Control
Output Types - The UDC2800 may have as many as five outputs made up of the following types:
• Current Outputs (4-20 or 0-20 ma)
• Electromechanical Relays (5 amps)
• Dual Electromechanical Relays (2 amps)
• Open Collector Outputs (Transmitter Power)
Output Algorithms - The UDC2800 is available with one or more of the following output algorithms:
• Time Proportional provides On-Off or Time Proportional (Relay) output.
• Current Proportional supplies proportional direct current output for final control elements, which require a 4-20mA
signal. Output can be easily configured via the keyboard for 0-20mA operation without recalibration.
• Current Proportional Duplex is similar to current proportional but provides a second set of tuning parameters and
a split range current output or a second current output via the Auxiliary output option, for the heat and cool zones.
• Time Proportional Duplex - Depending on which control algorithm you select, this duplex output algorithm can
provide On-Off Duplex, Time Proportional Duplex. The time proportional duplex output provides independent PID
tuning constants and two-time proportional outputs; one for heat zone above 50% output, and one for cool zone
below 50% output.
• Current/Relay Duplex (Relay=Heat) - A variation of Duplex with Current active for 0 to 50% output (PID Set 2) and
Relay 2 active 50 to 100% output (PID Set 1). Note that only one alarm is available for this output type.
• Relay/Current Duplex (Relay=Cool) - A variation of Duplex with Current active for 50 to 100% output and Relay 2
is active for 0 to 50% output. Note that only one alarm is available for this output type.
Control Algorithms - Depending on the output algorithms specified, the controller can be configured for the following control
algorithms:
• On-Off
• PID-A
• PID-B
• PD with Manual Reset
• 3 control modes: Manual, Automatic with Local Setpoint, Automatic with Remote Setpoint
Alarms
One or two electromechanical alarm relays are available to activate external equipment when preset alarm setpoints are
reached. Each of the two alarms can be set to monitor two independent setpoints. Each alarm setpoint can be either high or
low alarm. The alarm type can be selected to be either of the inputs, the Process Variable, Deviation, Output, Shed from
communications, PV rate of change, or to alarm on manual mode activation or a Current Output Open failure. It can also be
used as an On or Off event at the beginning or end of a Ramp/Soak segment. The alarm hysteresis is configurable from 0 to
100% of range.
• Alarms can be configured as latching or non-latching.
• Alarm blocking is also available which allows start-up without alarm energized until after it first reaches the
operating region.
• PV rate of change alarm.
• Loop break alarm.
• Timer output reset.
• Diagnostic Alarm
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UDC2800 Universal Digital Controller Specification, 51-52-03-49
Communication
A communications link is provided between the UDC2800 and a host computer or PLC via the RS485 Modbus® RTU or
Ethernet TCP/IP communications option. A Bluetooth communication link is also available allowing a non-intrusive
configuration of the instrument.
Miscellaneous Features
Auxiliary Output* - Either or both two current outputs can function as an Auxiliary Output which can be scaled from 0-20 mA
or 4-20 mA for 0 to 100% for any range. It can be configured to represent Input 1, Input 2, PV, active Setpoint, Local SP1,
Deviation, or the Control Output.
Transmitter Power - This output provides up to 28 volts DC to power a 2-wire transmitter (it requires the use of Open
Collector Output (Transmitter Power Output) selection or the Auxiliary Output).
Four Local and one Remote Setpoints - Can be configured to provide Four Local and one Remote Setpoints, which are
selectable either via the keyboard or by Digital Input.
Universal Switching Power - Operates on any line voltage from 90 to 264 Vac 50/60 Hz without jumpers. 24 Vac/dc
instrument power is available as an option.
Timer - This standard feature provides a configurable time period of 0 to 99 hours, 59 minutes or units of minutes and
seconds. It can be started via the keyboard, alarm 2, or by a digital input. The timer output is Alarm 1, which energizes at the
end of the Timer Period. Alarm 1 can be automatically reset. The Timer Period can be changed between each batch. Status
is shown on the lower display.
Moisture Protection - The NEMA4X and IP66 rated front face permits use in applications where it may be subjected to
moisture, dust, or hose-down conditions.
Setpoint Ramp/Soak Programming (Optional) - Enables you to use 8 programs and store 4 Ramp and 4 Soak segments
per program. Programs can be linked up to 64 segments. Run or Hold of program is keyboard or remote digital switch
selectable.
Setpoint Rate - Lets you define a ramp rate to be applied to any local setpoint change. A separate upscale or downscale
rate is configurable. A single setpoint ramp is also available as an alternative.
CE Mark - Conformity with Radio Equipment Directive 2014/53/EU as a standard feature.
Radio Compliance information -
Federal Communications Commission (FCC) contains FCC ID: 2AVFQ-MCUDISP
Industry Canada (IC) contains IC: 25762-MCUDISP
Approval Body Options – CSA/UL listed certification are available as an option. CE/FCC/IC is standard.
Four Sets of Tuning Constants - Four sets of PID parameters can be configured for each loop and automatically or
keyboard selected.
Data Security - Five levels of keyboard security protect tuning, configuration, and calibration data, accessed by a
configurable 4-digit code. Nonvolatile EEPROM memory assures data integrity during loss of power.
Diagnostic/Failsafe Outputs - Continuous diagnostic routines detect failure modes, trigger a failsafe output value and
identify the failure to minimize troubleshooting time.
High Noise Immunity - The controller is designed to provide reliable, error-free performance in industrial environments that
often affect highly noise-sensitive digital equipment.
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