Honeywell DR4300 manual Min, Rpm

DR4300 Circular Chart Recorder

Lower Display	Upper Display			Parameter
Prompt	Range of Setting			Definition
	or Selection
RATE T	0.08 to 10.00 minutes	RATE—Rate action affects the recorder’s output
	0.08 or less = OFF	whenever the deviation between setpoint and process
	[factory setting = 0.0]	variable is changing. It affects it more when the deviation
		is changing faster. (This is the “derivative” component of
		control.)
			ATTENTION	If control group parameter “OUTALG”
		is “RLYD” (relay duplex), “Tcur” (time/current duplex), or
		“CurT” (current/time duplex), and you are using the
		recorder in a heat/cool application, RATE T is used for
		heat control. Cooling control would use RATE2T
		described later in this table.
I MIN	0.02 to 50.00	RESET IN MINUTES PER REPEAT or RESET IN
or	[factory setting = 0.02]	REPEATS PER MINUTE—Which of these prompts is
I RPM		displayed depends on the selection made for control
		group parameter “MINRPM”.
		Reset adjusts the recorder’s output taking into
		consideration both the size of the deviation (SP-PV) and
		the duration of the deviation. (This is the “integral”
		component of control.) The amount of corrective action
		depends on the value of PB or GAIN.
		The reset value specified here determines how many
		times proportional action is repeated per minute
		(I RPM) or the length (in minutes) of the reset action (I
		MIN). For example, if I MIN = .5, it is the same as if I
		RPM = 2. The result is the same; two resets are
		performed in every minute.
			ATTENTION	If control group parameter “OUTALG”
		is “RLYD” (relay duplex), “Tcur” (time/current duplex), or
		“CurT” (current/time duplex), and you are using the
		recorder in a heat/cool application, I MIN or I RPM is
		used for heat control. Cooling control would use I2 MIN
		or I2 RPM described later in this table.
MANRST	–100 to +100 (in % output)	MANUAL RESET—This parameter is only applicable if
	[factory setting = 0]	control group parameter “CTRALG” is “PDMR”
		(PD with manual reset). Because a proportional recorder
		will not necessarily line out at setpoint, there will be a
		deviation (offset) from setpoint. This reset value can be
		used to eliminate the offset and lets the PV line out at
		setpoint. The controller output is the computed output
		plus the value of MANRST.

102 DR4300 Circular Chart Recorder Product Manual 12/03