Toshiba W7 manual Conductor Requirements and Grounding, Power Connections

Conductor Requirements and Grounding

WARNING

•Use separate metal conduits for routing the input power, output power, and control circuits and each shall have its own ground cable.

•A separate ground cable should be run inside the conduit with the input power, output power, and and control circuits.

•DO NOT connect control terminal strip return marked CC to earth ground.

•Always ground the unit to prevent electrical shock and to help reduce electrical noise.

•It is the responsibility of the person installing the ASD or the electrical maintenance personnel to provide proper grounding and branch circuit protection in accordance with the 2005 NEC and any applicable local codes.

T h e M e t a l O f C o n d u i t I s N o t A n A c c e p t a b l e G r o u n d .

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 tagout 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 lockout/tagout 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 2005 NEC Article 300 – Wiring Methods and Article 310 – Conductors For General Wiring). Size the branch circuit conductors in accordance with 2005 NEC Table 310.16.

•Adhere to the recommended conductor sizes listed in the section titled Cable/Terminal Specifications on pg. 154. If multiple conductors are used in parallel for the input or output power, each branch of the parallel set shall have its own conduit and not share its conduit with other parallel sets (i.e., place U1, V1, and W1 in one conduit and U2, V2, and W2 in another) (refer to 2005 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).

Note: National and local codes should be referenced when running more than three conductors in the same conduit.

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

•Do not install the 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.

6 W7 ASD Installation and Operation Manual