Table of Contents
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Key Number
_ _ _ _ _ _
Key Number - UDC2800 Single Loop Controller
Description
Digital Controller for use with 100 to 240 Vac Power
Digital Controller for use with 24 Vac/dc power
Table I - Specify Control Output and/or Alarms
Current Output (4 to 20 ma, 0 to 20 ma)
Output #1
Electro Mechanical Relay (5 Amp Form C)
Open Collector transistor output
Dual 2 Amp Relays (Both are Form A)
(Heat/Cool Applications)
Output #2
No Additional Outputs or Alarms
and Alarm
One Alarm Relay Only
#1 or
Alarms 1
E-M Relay (5 Amp Form C) Plus Alarm 1 (5 Amp
and 2
Form C Relay)
Open Collector Plus Alarm 1 (5 Amp Form C
Relay)
Table II - Communications and Software
Communications
Software
Future options
I
II
_ _
_ _ _
None
Auxiliary Output/Digital Inputs (1 Aux and
1 DI or 2 DI)
RS-485 Modbus Plus Auxiliary
Output/Digital Inputs
10/100M Base-T Ethernet (Modbus RTU)
Plus Auxiliary Output/Digital Inputs
Standard Software
Standard S/W and Setpoint Program
None
III
IV
_ _ _
_ _ _
Selection
DC2800
DC2900
C _
E _
T _
R _
_ 0
_ B
_ E
_ T
0 _ _
1 _ _
2 _ _
3 _ _
_ S_
_ F_
_ _ O
Chapter 3 - Installation
V
VI
_ _
_
Availability
↓
↓
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40
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Table of Contents
Troubleshooting
