Emerson 4401 - Threshold detector 1 destination

Menu 12 Introduction
Parameter
x.00
Parameter
description format
Keypad and
display
Serial
communications
CT Modbus
RTU
PLC Ladder
programming
CTSoft Menu 0
Advanced parameter
descriptions
156 Commander SK Advanced User Guide
www.controltechniques.com Issue Number: 9
Menu 12 includes two threshold detectors which produce logic signals depending on the level of a variable value with respect to a threshold, and two
variable selectors which allow two input parameters to be selected or combined to produce a variable output. A function is active if one or more
sources are routed to a valid parameter.
These parameters indicate whether the threshold input variable is above (On) or below (OFF) the programmed threshold.
This parameter and Pr 12.23 define the parameter to be input to the programmable threshold.
The absolute value of the source variable is taken as input to the threshold comparator. Only valid parameters can be programmed as a source. If a
non valid parameter is programmed the input value is taken as 0.
This parameter and Pr 12.24 are the user defined threshold levels entered as a percentage of the source maximum.
This parameter and Pr 12.25 define the band within which no change will occur on the output.
The upper limit for switching is: Threshold Level + Hysteresis/2
The lower limit for switching is:Threshold Level - Hysteresis/2
This parameter and Pr 12.26 are used to invert the logic states of the threshold output if required.
This parameter and Pr 12.27 define the parameter which is to be controlled by the threshold parameter. Only parameters which are not protected can
be set up as a destination. If a non valid parameter is programmed the output is not routed anywhere.
12.01 Threshold detector 1 output
12.02 Threshold detector 2 output
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1111
Range OFF(0) or On(1)
Update rate 21 ms
12.03 Threshold detector 1 source
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
11111
Range Pr 0.00 to Pr 21.51
Update rate Read on drive reset
12.04 Threshold detector 1 level
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1 111
Range 0.0 to 100.0%
Update rate 21 ms
12.05 Threshold detector 1 hysteresis
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1 111
Range 0.0 to 25.0%
Default 0.0
Update rate 21 ms
12.06 Threshold detector 1 output invert
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Range OFF(0) or On(1)
Default OFF(0)
Update rate 21 ms
12.07 Threshold detector 1 destination
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1 2 1111
Range Pr 0.00 to Pr 21.51
Default Pr 0.00
Update rate Read on drive reset