Power Connections; Protection - Toshiba Q9 Plus ASD Quick Start Manual

Power Connections

C o n t a c t W i t h E n e r g i z e d W i r i n g W i l l C a u s e S e v e r e
• Turn off, lock-out, and tag-out all power sources before proceeding to connect the power wiring to
the equipment.
• After ensuring that all power sources are turned off and isolated in accordance with established
lock-out/tag-out procedures, connect the 3-phase power source wiring of the correct voltage to the
correct input terminals and connect the output terminals to a motor of the correct voltage and type
for the application (refer to NEC Article 300 – Wiring Methods and Article 310 – Conductors For
General Wiring). Size the branch circuit conductors in accordance with NEC Table 310.16.
• If multiple conductors are used in parallel for the input or output power and it is necessary to use
separate conduits, each parallel set shall have its own conduit (i.e., place U1, V1, W1, and a ground
wire in one conduit and U2, V2, W2 and a ground wire in another; refer to NEC Article 300.20 and
Article 310.4). National and local electrical codes should be referenced if three or more power
conductors are run in the same conduit (refer to NEC Article 310 adjustment factors).
• DO NOT connect the 3-phase input power to the output of the ASD. This will damage the ASD
and may cause injury to personnel.
• DO NOT connect resistors across terminals PA – PC or PO – PC. This may cause a fire.
• Ensure the correct phase sequence and the desired direction of motor rotation in the Bypass mode
(if applicable).

Protection

• Ensure that primary protection exists for the input wiring to the equipment. This protection must be
able to interrupt the available fault current from the power line. The equipment may or may not be
equipped with an input disconnect (option).
• All cable entry openings must be sealed to reduce the risk of entry by vermin and to allow for
maximum cooling efficiency.
• It is the responsibility of the ASD installer/maintenance personnel to setup the Emergency Off
braking system of the ASD. The function of the Emergency Off braking function is to remove
output power from the drive in the event of an emergency. A supplemental braking system may also
be engaged in the event of an emergency. For further information on braking systems, see
parameter F250.
Note: A supplemental emergency stopping system should be used with the ASD. Emergency
stopping should not be a task of the ASD alone.
• Follow all warnings and precautions, and DO NOT exceed equipment ratings.
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DANGER
I n j u r y O r L o s s O f L i f e .
Q9 Plus ASD Quick Start Guide