Toshiba H9 operation manual Power Connections, Protection

Power Connections

DANGER

C o n ta 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 I n j u r y O r D e a t h .

•Turn off, lockout, and tag out all power sources before connecting the power wiring to the equipment.

•After ensuring that all power sources are turned off and isolated in accordance with established lockout/tag out procedures, connect three-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 2005 NEC Article 310 adjustment factors).

•Ensure that the 3-phase input power is Not connected to the output of the H9 ASD. This will damage the H9 ASD and may cause injury to personnel.

•DO NOT install the H9 ASD if it is damaged or if it is missing any component(s).

•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).

•Turn the power on only after attaching and/or securing the front cover.

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.

•Follow all warnings and precautions and do not exceed equipment ratings.

•External dynamic braking resistors must be thermally protected.

•It is the responsibility of the person installing the H9 ASD or the electrical maintenance personnel to setup the Emergency Off braking system of the H9 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 parameters F250 and F304.

Note: A supplemental emergency stopping system should be used with the H9 ASD. Emergency stopping should not be a task of the H9 ASD alone.

•Follow all warnings and precautions and do not exceed equipment ratings.

6 H9 ASD Installation and Operation Manual