Honeywell UDC2500 ユーザーズマニュアル

Step 

End the Ramp 

When the final setpoint is reached, “RUN” changes to 
“HOLD” in the upper display and the controller operates 
at the new final setpoint. 

Disable SPRAMP 

details. 

 

If power is lost during a ramp, upon power-up the controller will be in HOLD and the 
setpoint value will be the setpoint value prior to the beginning of the setpoint ramp. 

The ramp is placed in hold at the beginning. 

Configure the mode at Set Up Group “CONTROL”, function prompt “PWRUP”.  See 
Subsection 3.11 – CONTRL GROUP FUNCTION Prompts. 

When you have configured a SETPOINT RATE, it will apply immediately to local 
setpoint change. 

Make sure: 

•  SPRATE is enabled 
•  SP RATE and SPPROG are not running. 
•  A Rate Up (EUHRUP) or Rate Down (EUHRDN) value has been configured in 

Engineering units per hour.   

ATTENTION 

A value of 0 will imply an immediate change in setpoint, that is, NO RATE applies.  See 
Subsection 3.5 – Configuration group “SPRAMP” for details.) 

When a change to local setpoint is made, this controller will ramp from the original 
setpoint to the “target” setpoint at the rate specified. 

The current setpoint value can be viewed at Sn on the lower display. 

If power is lost before the “target” setpoint is reached, upon power recovery, the 
controller powers up with Sn = Current PV value and it automatically “Restarts” from Sn 
= current PV value up to the original “target” setpoint.