Honeywell UDC2800 User Manual

Specifications
RS485 Modbus
RTU
Communications
Interface
(Optional)
Baud Rate: 4800, 9600,19,200 or 38,400 baud selectable
Data Format: Floating point or integer
Length of Link:
l
2000 ft (600 m) max. with Belden 9271 Twinax Cable and 120
ohm termination resistors
l
4000 ft. (1200 m) max. with Belden 8227 Twinax Cable and
100 ohm termination resistors
Link Characteristics: Two-wire (half-duplex), multi-drop Modbus
RTU protocol, 15 drops maximum or up to 31 drops for shorter link
length.
Ethernet TCP/IP
Communications
Interface
(Optional)
Type: 10/100M Base-T
Length of Link: 330 ft. (100 m) maximum. Use Shielded twisted-
pair, Category 5e (STP CAT5e) Ethernet cable.
Link Characteristics: Four-wire plus shield, single drop, five hops
maximum
IP Address: IP Address is 10.0.0.2 as shipped from the Factory
Configuration: Ethernet parameters are configured via the Front
Panel.
RS485 and
Ethernet
Transaction rates
Host computer must allow a minimum of 20 milliseconds between
Read transactions and a minimum of 200 milliseconds between
Write transactions.
Bluetooth
Communications
(Standard)
Type: Bluetooth
Length of Link: 10 ft. (3 m) maximum for mobile devices
Protocol: BLE 4.2
Controller Output
Algorithms
On-off or Time Proportional:
One relay or open collector output. Control action can be set for
direct or reverse.
Time Proportional Relay Resolution: 3 msec
On-off Duplex, Three Position Step Control, or Time Proportional
Duplex:
35
Chapter 3 - Installation

Honeywell UDC2800 Specifications

General

Control Modes	PID, ON/OFF, Manual
Mounting	Panel Mount
Display	Dual 4-digit LED
Input Types	Thermocouple, RTD, mA, mV, V
Output Types	Relay
Power Supply	100-240 VAC, 50/60 Hz
Communication	RS-485 Modbus RTU
Enclosure Rating	NEMA 4X