Toshiba GX9 ASD, Быстрый старт

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GX9 ASD Quick Start Guide 5
Conductor Routing and Grounding
Precautions
• Use separate metal conduits for routing the input power, output power, and control circuits.
• A separate ground cable shall be run inside the conduit with the input power, output power, and
control circuits.
• If multiple conductors are used in parallel for the input or output power, each parallel set shall have
its own conduit and not share its conduit with other parallel sets (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 the NEC Article
300.20 and Article 310.4). National and local electrical codes shall be referenced if three or more
power conductors are run in the same conduit (refer to the NEC Article 310 adjustment factors).
• Under no circumstances in a multiple ASD or multiple motor system configuration shall the input
power or output power cables of the system ASDs or motors be routed within a shared conduit.
Each ASD and each motor shall have its own conduit for input power and output power cable
routing.
Note: National and local codes shall be referenced when running more than three
conductors in the same conduit.
• DO NOT connect CC to earth ground.
• Use the CC terminal as the return for analog input terminals VI , RX , and RR .
• Use the CC terminal as the return for output terminals FP , PP , and P24 .
• Use the negative terminal of the AM , FM , and II terminals as the return for these analog inputs.
• Always ground the unit to prevent electrical shock and to help reduce electrical noise.
• It is the responsibility of the ASD installer/maintenance personnel to provide proper grounding and
branch circuit protection in accordance with the
NEC and any applicable local codes.
— The Metal Conduit Is Not An Acceptable Ground —
Power Connections Precautions
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 I N J U R Y O R L O S S O F L I F E .
• Turn off and lock-out/tag-out all power sources before connecting the power wiring to the
equipment.
• Ensure that all power sources are turned off and isolated in accordance with established lock-out/
tag-out procedures before connecting the 3-phase power source wiring to the ASD input terminals
and connect the ASD output terminals to a motor of the correct voltage and type for the application
(refer to the NEC Article 300 – Wiring Methods and Article 310 – Conductors For General
Wiring). Size the branch circuit conductors in accordance with the NEC Table 310.16.
• 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.
• Ensure the correct phase sequence and the desired direction of motor rotation in the Bypass mode
(if applicable).
WARNING
DANGER