Brochure

Conventional Bypass Options are companion packages for SED2 Variable
Frequency Drives that streamlines installation and simplifies control wiring.
Bypass-Door-Mounted Control Devices
Features
2-Contactor Units include: Drive-Off-Bypass
selector and bypass pilot light
3-Contactor Units include: Drive-Off-Bypass
selector, Bypass pilot light and Drive Test On/
Off selector.
Options
• LON® Interface
• Modbus® Interface
• BACnet® Interface
• Advanced Operator Panel (AOP) Module
VFD with Conventional (A)
Bypass Option
Bypass Power Features
2-Contactor: Output and Bypass provides
overload protection in bypass mode with a
step-down transformer with fused primary
and secondary. Contactors are electrically and
mechanically interlocked.
In addition to the 2-Contactor features,
3-Contactor (optional): Output, Bypass and
Input, providing drive test function and
complete electrical isolation of drive.
Input Device includes: disconnect, fused
disconnect (optional) and circuit breaker
(optional). All doors are interlocked and
padlockable.
Reactor Options include: Line reactor
mounted in bypass option enclosure; line
reactor (in NEMA 1 enclosure) supplied
separately; load reactor mounted in bypass
option enclosure and load reactor (in NEMA 1
enclosure) supplied separately.
Bypass Control Features
Auto Bypass allows user to send the motor to
bypass mode based on the drive’s program-
mable relay, typically set to fault.
Enable Input is generally used for safety
tie-ins; the motor will not operate in drive
or bypass when open.
Common Remote Start/Stop can be used in
both drive and bypass mode.
Essential Services Mode is typically used for
smoke purge; the motor goes to bypass regard-
less of the selected mode. No call to stop will
have an effect, including open safety or stop
commands. Only turning the power off or
opening this contact will stop the motor.