Rockwell Automation 1336F PLUS II User Manual - Firmware 1.xxx-6.xxx - Manual (Page 19)

Installation/Wiring 2–9
Input Devices Starting and Stopping the Motor
Repeated Application/Removal of Input Power
Bypass Contactors
Electrical Interference - EMI/RFI Immunity
The immunity of 1336 PLUS II drives to externally generated interfer-
ence is good. Usually, no special precautions are required beyond the
installation practices provided in this publication.
It is recommended that the coils of DC energized contactors associ-
ated with drives be suppressed with a diode or similar device, since
they can generate severe electrical transients.
!
ATTENTION: The drive start/stop control circuitry in-
cludes solid-state components. If hazards due to accidental
contact with moving machinery or unintentional flow of
liquid, gas or solids exist, an additional hardwired stop cir-
cuit may be required to remove AC line power to the drive.
When AC power is removed, there will be a loss of inherent
regenerative braking effect & the motor will coast to a stop.
An auxiliary braking method may be required.
!
ATTENTION: The drive is intended to be controlled by
control input signals that will start and stop the motor. A
device that routinely disconnects then reapplies line power
to the drive for the purpose of starting and stopping the
motor is not recommended.
!
ATTENTION: An incorrectly applied or installed bypass
system can result in component damage or reduction in
product life. The most common causes are:
• Wiring AC line to drive output or control terminals.
• Improper bypass or output circuits not approved by
Allen-Bradley.
• Output circuits which do not connect directly to the
motor.
Contact Allen-Bradley for assistance with application or
wiring.