Honeywell UDC2500 ユーザーズマニュアル

The factory calibration constants for all the input actuation types that can be used with 
the controller are stored in its non-volatile memory. Thus, you can quickly restore the 
“Factory Calibration” for a given input actuation type by simply changing the actuation 
type to another type and then changing it back to the original type.  
Refer to Table 5-14  Restore Factory Calibration for procedure 

ATTENTION 

A restored factory calibration overwrites any previous field calibration done for the input and 
may change the High and Low Range Limits.   
Protect your field calibration from accidental overwrites by configuring the appropriate 
LOCKOUT selection after calibration.  
See Section 3 - Configuration for specific instructions to set the lockout. 

Step 

Set LOCKOUT to 
NONE  

 

until you see: 
Upper Display

 = SET UP 

 = TUNING 

 

 

Until you see: 

 = one of the following: 

NONE – all parameters are read/write 
CAL – all parameters are read/write except Calibration 
CONF – configuration parameters are Read Only; no writes 
permitted 
VIEW – Tuning and Setpoint Ramp parameters are 
read/write. No other parameters can be viewed. 
ALL – Tuning and Setpoint Ramp parameters are available 
for read only. No other parameters can be viewed. 
Lower Display

 = LOCK 

 

or

 

Until NONE is in the upper display 

Enter INPUT 1 
Setup Group 

 

until you see: 
Upper Display

 = SET UP 

 = INPUT 1 or 2 

 

 

until you see: 
Upper Display

 = the current selection 

 = INxTYP 

 

or

 

to change the current selection to another selection 

Scroll through 
Functions 

 

until the lower display rolls through the rest of the functions and 
returns to:  

 = the new selection 

 = INxTYP