Lenze 93 V004 Series, Установка и пусконаладка, Страница: 20 / 29

Appendix
5 Appendix
5.1 PLC program
This section describes the operating principle of safety relay K
SR
for the “ Safe standstill ” function
of the V004 variants. The specified programming is part of a PLC program according to IEC 61131-3.
Warning!
The following PLC program is a basic programming solution. The program must always be adapted
to the respective application.
If the safety relay K
SR
fails, the mains contactor (K4) interrupts the power supply to the drive
controller via the second switch-off circuit.
5.1.1 “ Motor on ” and “ Motor off ” flow charts (basic sequence)
B a s i c s e t t i n g
P o w e r o n
K
S R
d e f e c t i v e
M o t o r
s t a r t
K
S R
a c t i v e
M o t o r
i s r o t a t i n g
E r r o r e v a l u a t i o n
2 n d s w i t c h - o f f
c i r c u i t a c t i v e
E r r o r e v a l u a t i o n
2 n d s w i t c h - o f f
c i r c u i t a c t i v e
n o
n o
y e s
y e s
n o
y e s
n o
y e s
S t o p
m o t o r
K
S R
n o t a c t i v e
E r r o r e v a l u a t i o n
2 n d s w i t c h - o f f
c i r c u i t a c t i v e
n o
y e s
y e s
B r i n g m o t o r
t o s t a n d s t i l l
P o w e r o f f
n o
w a i t i n g f o r
m o t o r s t a r t
M o t o r
i s r o t a t i n g
Fig. 7 Operational sequence “ motor on ” Fig. 8 Operational sequence “ motor off ”
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