Honeywell DR4300 Procedure for selecting manual or automatic mode

Configuration, Startup, and Operation of Recorder with Display

4.5.2.2 Changing Control Mode and Adjusting Output Manually

Available modes

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.

Procedure for selecting manual or automatic mode

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

Table 4-29 Procedure for Selecting Automatic or Manual Mode

Step Operation Press Action/Result

1	Selecting automatic	MAN	Until “A” indicator is ON.
	mode		The recorder regulates its output to maintain the PV at
		AUTO
		RESET	the desired setpoint.
2	Selecting manual		Until “M” indicator is ON.
		MAN
	mode		The recorder holds its output at the last value used
		AUTO
		RESET	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.
3	Adjust the output in		Adjust the output value while in manual mode.
	manual mode	or		Upper Display
						shows the input value.
				Lower Display
							shows OT and the output value
					in % for the selected channel.
4	Return to automatic		“A” indicator appears indicating automatic mode.
		MAN
	mode	AUTO
		RESET

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