Honeywell UDC2800 User Manual

Function
Prompt
Selections or
Range of
Setting
Parameter Definition
the automatic mode and the last setpoint used before
shed.
Shed SP
Recall
Shed Setpoint Recall
NOTE: It is not configurable if Shed Function is
set as Disable.
To Local SP Controller will use last local or remote setpoint used.
To Computer
SP
When in “slave” mode, the controller will store the last
host computer setpoint and use it at the Local
setpoint. When in “monitor” mode, the controller will
shed to the last instrument Local or Remote setpoint
used, and the LSP is unchanged.
Computer SP
Unit
Computer Setpoint Units
Engineering
Unit
Engineering units
Percent Percent of PV range
Computer SP
Ratio
–20.0 to 20.0 Computer setpoint ratio.
Computer SP
Bias
–999. to 9999.
(engineering
units)
Computer setpoint bias in Engineering Units.
Local
Loopback
Local Loopback tests the RS-485 communications
port. It is not used for any other communications
port.
Disable Disables the Loopback test.
Enable Allows loopback test. The instrument goes into
Loopback mode in which it sends and receives its
own message. The instrument displays PASS or FAIL
status in the upper display and LOOPBACK in the
lower display while the test is running. The instrument
will go into manual mode when LOOPBACK is
enabled with the output at the Failsafe value. The test
will run until the operator disables it here, or until
151
Chapter 4 - Configuration

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