Hitachi SJ7002 Series Instruction Manual page 224

4–62
Using Intelligent Output Terminals
Window
Comparator
Signals
54=[WCO]
Opt. Code
and 55=[WCOI]
Symbol
56=[WCO2]
[11 to [15],
Valid for
Ouputs [ALx]
Required
none
Settings
Default Requires
config.
terminal
The window comparator function outputs turn ON when You can also monitor each analog
input by comparing it to a threshold value. This feature allows the inverter to detect discon-
nected signal wiring, loss of power at a signal transmitter, etc. When the input is below the set
threshold value, the inverter substitutes the threshold value for the input. The related parameters
are given in the following tables.
Opt.
Symbol
Code
54 WCO [O] terminal window comparator
55 WCOI [OI] terminal window comparator
54 WCO2 [O2] terminal window comparator
Code Function
B060
[O] input maximum limit level of
window comparator
B061 [O] input minimum limit level of
window comparator
B062 [O] input hysteresis width of
window comparator
B063 [OI] input maximum limit level
of window comparator
[OI] input minimum limit level of
B064
window comparator
B065 [OI] input hysteresis width of
window comparator
B066 [O2] input maximum limit level
of window comparator
B067 [O2] input minimum limit level
of window comparator
B068 [O2] input hysteresis width of
window comparator
The following signal diagram shows the window comparator output generated from input
signals and comparator settings listed along the Y axis.
[O], [OI], or [O2]
B060 B063 B066
B062 B065 B068
B061 B064 B067
0
[WCO], [WCOI], or [WCO2]
Function Name
Range
0. to 100. (%)
0. to 100. (%)
0. to 10. (%)
0. to 100. (%)
0. to 100. (%)
0. to 10. (%)
–100. to 100. (%) Lower limit = B067 + B068 x 2
–100. to 100. (%) Lower limit = B066 – B068 x 2
0. to 10. (%)
Hysteresis region
Hysteresis region
Description
Lower limit = B061 + B062 x 2
Lower limit = B060 – B062 x 2
Lower limit = B061 – B062 x 2
Lower limit = B064 + B066 x 2
Lower limit = B063 – B066 x 2
Lower limit = B063 – B064 x 2
Lower limit = B066 – B067 x 2
t
t