Frequency Inverter ST600 Series High-Performance Multifunction VFD Safety Precautions
-2-
1.4 Safety guidelines
⚫ Only trained and qualified electricians are allowed to carry out related operations.
⚫ Do not perform wiring, inspection or component replacement when a power supply is
connected. Ensure all the input power supplies are disconnected before wiring and
inspection, and wait for at least the time designated on the VFD or until the DC bus
voltage is less than 36V. The minimum waiting time is listed in the table below.
⚫ Do not refit the VFD unless authorized; otherwise fire, electric shock or other injuries
may occur.
⚫ The base of the radiator may become hot while running. Do not touch to avoid injury.
⚫ The electrical parts and components inside the VFD are electrostatic. Take measures
to prevent electrostatic discharge during related operation.
1.4.1 Delivery and installation
⚫ Install the VFD on fire-retardant material and keep the VFD away from combustible
materials.
⚫ Connect the optional brake parts (brake resistors, brake units or feedback units)
according to the wiring diagram.
⚫ Do not operate on a damaged or incomplete VFD.
⚫ Do not touch the VFD with wet items or body parts; otherwise electric shock may occur.
Note:
⚫ Select appropriate tools for delivery and installation to ensure safe and proper running of the VFD
and to avoid physical injury or death. To ensure physical safety, the installation staff should take
mechanical protective measures, such as wearing exposure shoes and working uniforms.
⚫ Be sure to avoid physical shock or vibration during delivery and installation.
⚫ Do not carry the VFD by its front cover only, as the cover may fall off.
⚫ Installation site should be away from children and public places.
⚫ The VFD should be used in proper environment (see section 4.2.1 "Installation environment" for
details).
⚫ Prevent the screws, cables and other conductive parts from falling into the VFD.
⚫ As leakage current of the VFD during running may exceed 3.5mA, ground properly and ensure
the grounding resistance is less than 10Ω. The conductivity of PE grounding conductor is the
same as that of the phase conductor. For models higher than 30 kW, the cross sectional area of
the PE grounding conductor can be slightly less than the recommended area.
⚫ R, S and T are the power input terminals, and U, V and W are output motor terminals. Connect
To Next Page
Loading...
