WEG SSW-07 Manual Del Usuario página 24

Chapter 3 - INStaLLatION aND CONNeCtION
NOTES!
The use of fuses or circuit breakers at the input circuit is
1
necessary for the entire installation protection. It is not necessary
to use ultra-fast fuses for the SSW-07 operation; however, their
use is recommended for the soft-starter complete protection.
2 The transformer "T1" is optional and must be used when there
is a difference between the line voltage and the electronic power
voltage.
In case that damage at the SSW-07 Soft-Starter power circuit
3
keeps the motor running (e.g., shorted thyristors), the motor
protection is obtained with the use of the power isolating
contactor (K1) or circuit breaker (Q1).
Start push-button.
4
Stop push-button.
5
6 Start/Stop switch. Bear in mind that when using two-wire digital
input command (normally open switch with retention), in case
of a power interruption, upon return of power, the motor will be
started immediately if the switch remains closed.
In case of maintenance of the Soft-Starter SSW-07 or the motor
7
it is necessary to remove the input fuses or disconnect the power
supply to ensure the complete equipment disconnection from
the power supply.
8 The emergency stop can be used by disconnecting the
electronics power supply.
9
Undervoltage release for the Q1 power isolation circuit breaker.
23