Honeywell UDC3500 Universal Digital Controller Inventory

New Power and Flexibility  

The UDC3500 Universal Digital  Controller packs new powerful features  in the popular 1/4 DIN size.  Unmatched application power includes:  Infrared (IR) Configuration interface,  three universal analog inputs, two loops  of control and two Math Algorithms.  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, four digital inputs, a  maximum of seven analog and digital  outputs, Infrared, RS422/485 Modbus  RTU or Ethernet 10Base-T TCP/IP  Modbus communication protocols,  simple configuration plus total field  upgrade capability for any optional  feature.  Features  

• 3 Universal Analog Inputs (can be  configured to operate as 1  Universal and 4 High Level Inputs)  

• 0.10% Accuracy • Fast scanning rate (166ms)  

• Up to 3 Analog Outputs 

• Up to 5 Digital Outputs 

• 4 Digital Inputs  

• Math Functions  

• Ethernet or RS-485 communication  

• Cascade or 2 Loops of control  

• Infrared PC & Pocket PC  configuration  

• Healthwatch Maintenance Tool  

• NEMA4X and IP66 front face  protection  

• Multilanguage prompts  

• ¼ DIN Size  

• Easily Field Upgradeable  

• Bright, dual displays with multilanguage prompts (in English,  French, German, Spanish, or  Italian) 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 UDC3500 has up to three  Universal analog inputs with a typical  accuracy of ±0.10% of full-scale input  and a typical resolution of 16 bits.  These can easily be configured to  operate as 2 Universal and 2 High  Level or as 1 Universal and 4 High  Level inputs. All analog inputs are  sampled six times per second (every  166 milliseconds). The first, or Process  Variable input, can be one of various  thermocouple, RTD, Radiamatic or  linear actuations as shown in Table 1.  Linear actuations have thermocouple,  RTD and Radiamatic transmitter  characterization capability as a  standard feature. Linear actuations  also have square root capability.  The optional second and third inputs are  isolated from each other and all other  circuits and accept the same actuations  as input one. These optional inputs can  each be split into two high level inputs.  The fourth input is enabled by first  configuring Input 2 as a 20 mA or 5 Vdc  input type (High Level Analog Input –  HLAI). Input 4 is then available as a  high level input. The fifth input is  enabled by first configuring Input 3 as a  20 mA or 5 Vdc type (HLAI). Input 5 is  then available as a high level input. 

Analog Inputs (continued)  All actuations and characterizations  are keyboard configurable. A separate  Cold Junction compensator is  provided for each thermocouple type  analog input, thus maximizing  accuracy. Upscale, downscale or  failsafe sensor break protection is  keyboard configurable. Square Root  Extraction, Ratio/Bias and a  configurable digital filter of 0 to 120  seconds for signal damping are  available for each input.  See Table 1 for other details.  

Math Functions (Option)  Algorithms – Two pre-configured  algorithms are available for easy  implementation. The following  selections are available:  Feedforward Summer—Uses any  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 (standard feature). Feedforward Multiplier—Uses any  input, multiplied by the calculated PID  output to provide a resultant output,  which is sent to the final control  element (standard feature).