Rockwell Automation SMC-Flex, User Manual

Page: 80 / 160

3-36 Wiring
Figure 3.34 Slow Speed with Braking Sequence of Operation
Special Application Considerations
Use of Protective Modules
A protective module (see Figure 3.35) containing metal oxide
varistors (MOVs) can be installed to protect the power components
from electrical transients and/or electrical noise. The protective
modules clip transients generated on the lines and prevent such surges
from damaging the SCRs.
100%
Up-to-Speed
Normal
Slow Speed
Stop
Motor Speed
Push Buttons
Closed
Open
Closed
Open
Closed
Open
Closed
Open
Closed
Open
Start
Auxillary Contacts
Closed
Open
SMB
(Stop Option )
Br a ke
If the Co as t-to-Re s t
i s S elected
Co as t-to- S top
Br a king
Br a ke
Time in Seconds
Run Start Slow Speed
Brake
Co as t
3
1
2
Coast
ATTENTION
!
The user is responsible for determining which
stopping mode is best suited to the application and
will meet applicable standards for operator safety
on a particular machine.