Siemens Simodrive 611 - Page 287

9
05.01
9.10 Star–delta operation
9-287
 Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
AX.ZAX.Y
SIMODRIVE 611 digital system, MSD module
V2U2
W2
PLC outputs
2)
Term. 663
PE
K2h
K2
K1
K
x
1)
K2
K1
K1
Y
K1h
1PH
Y/
K1
K2
U2
V1 W1
V2
W2
U2
V2
W2
Y/∆
changeover
Pulse
enable
from NC/PLC
K2hK1h
K2

U1
Auxiliary contactor
power supply
max. 30 V DC
K
x
1)
EX.Y
SINUMERIK 840D
Fig. 9-28 Connection diagram for Y/∆ changeover SIMODRIVE 611 digital
1) Safe standstill is not guaranteed by only opening K1 and K2.Thus, for safety–related reasons, electrical isolation
must be provided by contactor K
x
. This contactor may only be switched in the no–current condition, i.e. pulse
enable must be withdrawn 40 ms before the contactor is opened (de–energized). refer to Sections 9.4.2 and 9.7. Circuit
example =10.
2) Two relay outputs can be selected from terminals AX.Y to AX.Z.
The connection diagram for Y/∆ changeover for the 611 universal system can
be configured, based on the specified examples. For a description of the func-
tion, refer to the separate Planning Guide and documentation
SIMODRIVE 611 universal.
Connection
diagram for Y/∆
changeover 611
digital system
9 Important Circuit Information