Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 45)

Mounting and Wiring Your 1336 IMPACT Drive 2-27
Is a Line Reactor or Isolation-Type Transformer Required?
Typically, you can connect the 1336 IMPACT drive directly to a
three-phase AC power line. However, certain power line conditions
may introduce the possibility of drive input power component
malfunction. To reduce the possibility of these malfunctions, a line
reactor or isolation-type transformer may be required.
Use the following table to determine if a line reactor or isolation-type
transformer is required for your system:
Input Fusing
The input fusing requirements are frame-size specific. Please refer to
the appropriate chapter.
Disconnecting the Drive Output Any method of disconnecting the drive that you wire to drive output
terminals M1, M2, and M3 must be able to disable the drive if opened
during drive operation. If opened during drive operation, the drive
may fault. You should remove the Drive Enable before the contactor
is opened. When the Drive Enable is removed, the drive stops
modulating.
Starting and Stopping the
Motor
If the AC line supplying the drive: Then an AC line reactor or isolation-type transformer:
Has power factor correction capacitors connected and switched
Is recommended between the capacitor bank and the input to the
drive.
Frequently experiences transient power interruptions or significant
voltage spikes
May be required.
Is run off the same line as a line commutated DC drive May be required
!
ATTENTION: The 1336 IMPACT drive does not
provide input power short circuit fusing. Specifications
for the recommended fuse size and type to provide drive
input power protection against short circuits is provided
in the tables in the frame-specific chapters. Branch
circuit breakers or disconnect switches cannot provide
this level of protection for drive components.
!
ATTENTION: The 1336 IMPACT drive control
circuitry includes solid-state components. If hazards due
to accidental contact with moving machinery or
unintentional flow of liquid, gas, or solids exists, an
additional hardwired stop circuit may be required to
remove AC line power to the drive. When AC input
power is removed, there is a loss of inherent regenerative
braking effect and the motor coasts to a stop. An
auxiliary braking method may be required.