Siemens siprotec 7SA6 User Manual page 141

CLOSE
Command
C+
C–
Matrix Configuration:
Figure 5-11 Double command motor control (anti-clockwise rotation / clockwise rotation) via two power relays with two
contacts each
7SA6 Manual
C53000-G1176-C133-1
Due to the hardware platform a double command with single output via 2 relays
with one pair of contacts each can only be applied with restrictions. For this purpose
use the 2 power relays provided for motor control (only available in device versions
with power relays) (see Figure 5-12 and 5-13). Observe the internal grouping (see also
"General Diagrams" in Subsection 1.2, Appendix A, Figures A-4, A-7, A-11, A-14,
A-16 and A-19).
TRIP
Command
6 7
X X
7SA6
(BO6)
BO7
BO8
(BO9)
Figure 5-12 Extract of a general diagram of the variants with power relays BO 6 to BO 9 (as
an example) showing the external connections according to Figure
C+1
t
C–1
L–
J1
J2
J3
J4
K18
K17
Configuration
C+2
SG
Motor
C–2
L+
CLOSE
TRIP
5-13
L+
L–
5-17