Honeywell UDC2800 User Manual

194
Step Operation Press Result
Mode
4 Show Tuning
Prompt
Lower Display key Until “TUNE OFF” is shown in the lower
display.
5 Tuning in
operation
Increment key or
Decrement key
Select “SLOW” or “FAST” in the lower
display.
A “T” appears under SP in the middle
display as long as ACCUTUNE process
is operating. When process completes,
tuning parameters are calculated and
the "T" will disappear and lower display
will show “TUNE OFF” prompt.
Using MANUAL TUNE at start-up for Duplex
(Heat/Cool)
When DUPLEX has been configured for MANUAL.This selection
should be used when tuning is needed only for the HEAT zone or only
for the COOL zone but not both. If Local Setpoint 1 is used, then the
controller will perform a HEAT zone tune. If Local Setpoint 2 is used,
then the controller will perform a COOL zone tune.
Table 5-10: Procedure for Using MANUAL TUNE for Heat side of Duplex Control
Step Operation Press Result
1 Configure LSP1 Lower Display key Until SP (Local Setpoint 1) shows in
the lower display.
2 Adjust LSP1
value
Increment key or
Decrement key
Until LSP1 is a value within the Heat
Zone (output above 50%).
3 Switch to
“Automatic” Mode
Man Auto key Until “Auto” appears (on controllers
with Manual option).
4 Show Tuning
Prompt
Lower Display key Until “TUNE OFF” is shown in the lower
display.
5 Tuning in
operation
Increment key or
Decrement key
Select “SLOW” or “FAST” in the lower
display.
A “T” appears under SP in the middle
display as long as ACCUTUNE process
Chapter 5 - Monitoring and Operating the Controller

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