Wiring Diagrams
10
Series contactor
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
N
22
23
24
28
29
30
31
32
M
L1 L2 L3
C
1
21
Control supply before C1
This system is mainly used when the RVS-DN is
retrofitted into an existing system, to reduce
modifications in existing installations.
Main power and Start signal are switched on upon
closure of the series contactor. The starter will operate
as long as the series contactor is closed.
Control supply obtained from main voltage must match
starter’s Control Supply voltage.
Notes:
1. It is recommended that terminals 1-3 be
always connected to Control Supply.
2. In some applications, it is required to open the
upstream contactor after soft stopping. The
upstream contactor can be operated by the
Immediate Contact that changes its position
only at the end of soft stop.
It is therefore recommended to delay the
opening of the upstream contactor for a few
seconds after the completion of Soft stop
process, when current reached zero, see
Immediate/Shear-pin Contact delay – page 7.
•
Ensure that auxiliary contact C
1
closes after
the main contactor “the soft-starter provides a
500 mSec. delay for the start signal. If it
closes before, Under Voltage, fault will occur.
It is recommended to use a time delay timer to
prevent possible faults.
By-pass contactor
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
N
22
23
24
28
29
30
31
32
M
U V W
L1
b
L2
b
L3
b
Bypas
Contacto
End Of Acceleration
Contac
L1 L2 L3
End of Acceleration contact is activated after an
adjustable time delays “Run Contact Delay” – see page
29 at the end of start-up period, closing the by-pass
contactor.
The contact will return to its original position when:
• Soft Stop or Stop signals are initiated
• Energy Saver signal is initiated
• Slow-Speed signal is initiated
• Fault condition occurs.
When the by-pass contactor closes, current to the
motor will flow through the by-pass.
Note: When a by-pass contactor is used, it is
recommended to order the starter with
preparation for by-pass contactor, so that
the RVS-DN current protections are
operative also after the by-pass contactor
closes.
When a Soft Stop signal is given, the End of
Acceleration contact returns to its original position
opening the by-pass contactor. Thereafter, the voltage
will gradually ramp down to zero, soft stopping the
motor.
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