Honeywell DR4300 用户手册

The recorder can operate in one of two modes. 

•  Manual: When switched to manual mode, the recorder holds its output at the last value used during 

automatic operation and stops adjusting the output for changes in process variable. In manual, the 
operator uses the keypad to adjust the output by changing the value shown in the upper display.   
 
If the switch to manual is the result of an input failure sending the channel to failsafe operation, the 
output value displayed when the controller first switches to manual will be the value of the “FAILSF” 
parameter in the control set up group. This “FAILSF” value is expressed as a percentage. The output 
can be any value between 0 % and 100 %. 

•  Automatic with Local Setpoint: In automatic local mode, the recorder uses the local setpoint and 

automatically adjusts the output to maintain the setpoint at the desired value. In this mode you can 
adjust the setpoint as described in Subsection 4.5.2.3.  

Table 4-29 includes procedures for selecting automatic or manual mode, and for changing the output while 
in manual. 

 

Selecting automatic 
mode 

 

Until “A” indicator is ON. 
The recorder regulates its output to maintain the PV at 
the desired setpoint. 

Selecting manual 
mode 

 

Until “M” indicator is ON. 
The recorder holds its output at the last value used 
during automatic operation and stops adjusting the 
output for changes in setpoint or process variable. 

•  If you get a “KEYERR” prompt, be sure control has 

been enabled through configuration as described 
earlier in this section. 

Adjust the output in 
manual mode 

 

or 

 

Adjust the output value while in manual mode. 

Upper Display

shows the input value. 

Lower Display

shows OT and the output value  

                            in % for the selected channel. 

Return to automatic 
mode 

 

“A” indicator appears indicating automatic mode.