Honeywell UDC2500 Universal Digital Controller Quick Start Guide

March 2007

Step 1. Model Number Interpretation

Write your controller model number in the boxes provided. Refer to Tables I, II, and III to identify your controller's features. A dot indicates the feature is available.

Key Number	Description	Selection Availability	Other options
KEY NUMBER - UDC2500 Single Loop Controller	Digital Controller for use with 90 to 264Vac Power	DC2500
	Digital Controller for use with 24Vac/dc Power	DC2501

Table I - Specify Control Output and/or Alarms

Output #1	Selection	Availability	Output #2 and Alarm #1 or Alarms 1 and 2	Availability
None (Can be used as an indicator only)	0	X	None	0
Current Output (4 to 20mA, 0 to 20 mA)	1	X	E-M Relay (5 Amp Form C) Plus Alarm 1 (5 Amp Form C Relay)	A
Electro Mechanical Relay (5 Amp Form C)	2	X	Solid State Relay (1 Amp) Plus Alarm 1 (5 Amp Form C Relay)	B
Solid State Relay (1 Amp)	3	X	Open Collector Plus Alarm 1 (5 Amp Form C Relay)	C
Open Collector transistor output	4	X
Dual 2 Amp Relays (Both are Form A) (Heat/Cool Applications)	5	X
No Additional Outputs or Alarms	6	X
One Alarm Relay Only	7	X

Table II - Communications and Software Selections

Selection	Availability	Software Selections	Availability
None	0	No Selection	0
Auxiliary Output/Digital Inputs (1 Aux and 1 DI or 2 DI)	1	None	0
RS-485 Modbus Plus Auxiliary Output/Digital Inputs	2	Infrared interface	R
10 Base-T Ethernet (Modbus RTU) Plus Auxiliary Output/Digital Inputs	3	Infrared Interface Included (Can be used with a Pocket PC)	1
Standard Functions, Single Display	0
Dual Display with Auto/Manual	A
Set Point Programming (12 Segments) Dual Display, Auto/Manual	B
Limit Controller	L
Reserved	a

Table III - Input 1 can be changed in the field using external resistors

Input 1	Selection	Availability	Input 2	Selection	Availability
TC, RTD, mV, 0-5V, 1-5V	0	X	0-5V, 1-5V, 0-20mA, 4-20mA	0	X
TC, RTD, mV, 0-5V, 1-5V, 0-20mA, 4-20mA	1	X
TC, RTD, mV, 0-5V, 1-5V, 0-20mA, 4-20mA, 0-10V	2	X
None	3	X

Step 2. Dimensions and mounting

A diagram shows the dimensions for panel cutout and mounting. The maximum panel thickness is 19.1 mm (0.75 inches). The panel cutout is 92.0 mm (3.62 inches) square.

Step 3. Wiring

A wiring diagram illustrates the connections for AC/DC power, outputs, alarms, digital inputs, and communication ports (RS485, Ethernet).

Step 4. Configuration Procedure

This section outlines the steps to configure the controller:

Enter Set Up Mode: Press the 'Setup' button. The upper display shows 'SET' and the lower display shows 'TUNING'.
Select Set Up Group: Press 'Setup' or arrow keys to navigate through group titles. Stop at the desired group.
Select Function Parameter: Press 'Function'. The upper display shows the current value, and the lower display shows the function prompt.
Change Value/Selection: Use the arrow keys (up/down) to increment or decrement the value or selection. Press 'M-A/RESET' to recall the original value if needed.
Enter Value/Selection: Press 'Function' to enter the modified value or selection.
Exit Configuration: Press 'Lower Display' to exit configuration mode. Changes are saved. The controller times out after 30 seconds of inactivity.

Step 5. Configuration Record Sheet

This section provides a template to record the controller's configuration values for future reference. It includes fields for Group Prompt, Function Prompt, Value or Selection, and Factory Setting for various parameters like TUNING, SPRAMP, ALGOR, INPUT1, INPUT2, ALARMS, COM, and DISPLAY.

Step 6. Start Up Procedure for Operation

This section details the startup procedure for both single and dual display models:

Single Display

Configure Controller: Ensure the controller is configured and values are recorded.
Select Manual Mode: Press 'M-A/RESET' until the 'M' indicator is ON.
Adjust Output: Use the arrow keys to adjust the output value. The controller is in manual mode.
Select Automatic Mode: Press 'M-A/RESET' until the 'A' indicator is ON. The controller will automatically adjust the output to maintain the process variable at setpoint.

Dual Display

Enter Local Setpoint: Press the 'Lower Display' key until 'SP' appears. The upper display shows the PV, and the lower display shows the SP and its value.
Set Limit Setpoint: Use the up and down arrow keys to set the desired limit setpoint.
Store Limit Setpoint: Press the 'Lower Display' key to store the value.
Limit Flashing: If the display flashes 'Limit', press the 'Auto-Man/Reset' key.

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