System Setup Requirements; Dynamic Braking Precaution - Toshiba Q9 Plus Bypass ASD Installation & Operation Manual

System Setup Requirements

• When using the Q9 Plus Bypass ASD/Q9 Plus Bypass Box as an integral part of a larger system, it
is the responsibility of the Q9 Plus Bypass ASD/Q9 Plus Bypass Box installer or maintenance
personnel to ensure that there is a fail-safe in place (i.e., an arrangement designed to switch the
system to a safe condition if there is a fault or failure).
• System safety features should be employed and designed into the integrated system in a manner
such that system operation, even in the event of system failure, will not cause harm or result in
personnel injury or system damage (i.e., E-Off, Auto-Restart settings, System Interlocks, etc.).
• The programming setup and system configuration of the Q9 Plus Bypass ASD/Q9 Plus Bypass
Box may allow it to start the motor unexpectedly. A familiarity with the Auto-Restart and Retry
settings is a requirement to use this product.
• Improperly designed or improperly installed system interlocks may render the motor unable to start
or stop on command.
• The failure of external or ancillary components may cause intermittent system operation (i.e., the
system may start the motor without warning).
• There may be thermal or physical properties, or ancillary devices, integrated into the overall system
that may allow for the Q9 Plus Bypass ASD/Q9 Plus Bypass Box to start the motor without
warning. Warning signs to this effect must be clearly posted at or near the equipment installation.
• If a secondary magnetic contactor (MC) is used between the ASD and the load, it should be
interlocked to halt the ASD before the secondary contact opens. If the output contactor is used for
bypass operation, it must be interlocked such that commercial power is never applied to the ASD
output terminals (T1, T2, T3).
• Power factor improvement capacitors or surge absorbers MUST NOT BE INSTALLED on the
three-phase output of the Q9 Plus Bypass ASD/Q9 Plus Bypass Box.
• Use of the built-in system protective features is highly recommended (i.e., E-Off, Overload
Protection, etc.).
• The operating controls and system status indicators shall be clearly readable and positioned where
they may be viewed without obstruction.
• Additional warnings and notifications shall be posted at the equipment installation location as
deemed required by Qualified Personnel.
• Follow all warnings and precautions, and DO NOT exceed equipment ratings.

Dynamic Braking Precaution

• The Dynamic Braking function is NOT used with the Q9 Plus Bypass ASD/Q9 Plus Bypass Box.
• DO NOT attempt to configure or connect the DBR function to the Q9 Plus Bypass ASD/Q9 Plus
Bypass Box.
• Attempts to configure or adapt the Q9 Plus Bypass ASD/Q9 Plus Bypass Box to use the Dynamic
Braking function may result in system damage or injury to personnel.
8 Q9 Plus Bypass ASD/Bypass Box Installation and Operation Manual