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231
Logical Functions and Timers [600]
Section 11-6
Example:
Broken belt detection for Logic Y
This example describes the programming for a so-called “broken belt detec-
tion” for fan applications.
The comparator CA1 is set for frequency>10Hz.
The comparator !A2 is set for load < 20%.
The comparator CD1 is set for Run.
The 3 comparators are all AND-ed, given the “broken belt detection”.
In menus [621]-[625] expression entered for Logic Y is visible.
Set menu [621] to CA1
Set menu [622] to &
Set menu [623] to !A2
Set menu [624] to &
Set menu [625] to CD1
Menu [620] now holds the expression for Logic Y:
CA1&!A2&CD1
which is to be read as:
(CA1&!A2)&CD1
Note
Set menu [624] to "
" to finish the expression when only two comparators are
required for Logic Y.
Selects the first comparator for the logic Y function.
Default:
CA1
CA1
0
!A1
1
CA2
2
!A2
3
CD1
4
!D1
5
CD2
6
!D2
7
LZ/LY
8
!LZ/!LY
9
T1
10
!T1
11
T2
12
!T2
13
CA3
14
!A3
15
CA4
16
!A4
17
CD3
18
!D3
19
CD4
20
!D4
21
621 Y Comp 1
Stp
CA1
A
Содержание SX-F
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Страница 20: ...12 Glossary Section 1 6...
Страница 32: ...24 Cabinet mounting Section 2 3...
Страница 58: ...50 Connecting options Section 5 6...
Страница 72: ...64 Load Monitor and Process Protection 400 Section 7 5...
Страница 74: ...66 EMC standards Section 8 1...
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