Honeywell VRX180 user manual Custom algorithm prompts

Programming Function Blocks and Features

Custom algorithm prompts

Table 4-7 describes the custom algorithm prompts. See Table 4-2 for additional prompts. These prompts appear only if CUSTOM INPUT is enabled under FEATURES. See Section 0.

Table 4-7 Custom Algorithm Prompts

Prompt	Range/Selections	Definition
INPUT SIGNAL	EMF, TC, or RTD.	Selects the input hardware.
RJ ENABLE	Select YES for reference junction	Reference junction
	compensation, NO for no	compensation.
	compensation.
EMISSIVITY ENABLE	Select YES for emissivity	Emissivity compensation for
	compensation for emf input.	emf input.
Xn	You must input at least 2 coordinates.	Use these prompts to plot a
	X must increase by at least 0.00001.	curve of up to 20 points, where
	Y values are not limited except in the	Xn is the incoming signal in
	following 2 cases.	the electrical units selected
	1. If the incoming signal is from a	and Yn is its corresponding
	thermocouple and reference junction	value in the temperature units
		selected. Interpolation is
	compensation is on, make sure that
		straight-line.
	a, b, and c are all true.
Yn	a) All Y's are increasing or all are
	decreasing.
	b) Y range includes 0-65°C.
	c) Temperature units are °F, °C, K,
	or °R.
	2. If Online adjustment of the value is
	desired, make sure that all Y's are
	increasing or all are decreasing.
ELECTRICAL UNITS	MV, OHMS, VOLTS	Units of the electrical signal.
LAG	≥ 0 seconds or OFF	LAG is a time constant applied
		to the input measurement
		value. This provides digital
		filtering (LAG) to the
		measurement.
		Lag appears on menu only if
		EXPANDED INPUT is enabled
		under Enable Features in the
		Program menu.
SAMPLE HOLD	OFF, discrete parameter, 0, 1	Holds Input. The input value is
		measured normally when this
		discrete is OFF(0) and holds
		its last value when the discrete
		is ON(1).
		Hold appears on menu only if
		EXPANDED INPUT is enabled
		under Enable Features in the
		Program menu.

Press Menu when entries are complete. At the prompt "PRESS ENTER TO SAVE", press Enter to save your changes, or press Menu again to exit the session without saving the changes.

Video Recorder – User Manual 89