Control Techniques Digitax ST - Menu 12: Threshold Detectors, Variable Selectors and Brake Control Function

Menu 12
Parameter
structure
Keypad and
display
Parameter x.00
Parameter
description format
Advanced parameter
descriptions
Serial comms
protocol
Electronic
nameplate
Performance
156 Digitax ST Advanced User Guide
www.controltechniques.com Issue Number: 1
5.14 Menu 12: Threshold detectors, variable selectors and brake control function
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. One menu 9 or one menu 12 function is
executed every 4ms. Therefore the sample time of these functions is 4ms x number of menu 9 and 12 functions active. A function is active if one or
more sources are routed to a valid parameter.
Figure 5-11 Menu 12 logic diagram
??.??
Any variable
parameter
??.??
12.03
Threshold
Detector 1
input source
12.04
Threshold
Detector 1
threshold level
Threshold
Detector 1
Threshold
Detector 1
x(-1)
12.06
Threshold
Detector 1
output invert
12.01
Threshold
Detector 1
output indicator
12.05
Threshold
Detector 1
hysteresis
??.??
Any
unprotected
bit parameter
??.??
12.07
Threshold
Detector
output
destination
parameter
1
??.??
Any variable
parameter
??.??
12.23
Threshold
Detector 2
input source
12.24
Threshold
Detector 2
threshold level
Threshold
Detector 2
Threshold
Detector 2
x(-1)
12.26
Threshold
Detector 2
output invert
12.02
Threshold
Detector 2
output indicator
12.25
Threshold
Detector 2
hysteresis
??.??
??.??
12.27
Threshold
Detector
output
destination
parameter
2
All
parameters
are shown
at their default setting
0.XX
0.XX
Key
Read-write
(RW)
parameter
Read-only (RO)
parameter
Input
terminals
Output
terminals
Hysteresis
Threshold
level
Threshold
output
t
t
Any
unprotected
bit parameter