36 Planning the electrical installation
Selecting the supply disconnecting device (disconnecting
means)
Install a hand-operated supply disconnecting device (disconnecting means) between
the AC power source and the drive. The disconnecting device must be of a type that
can be locked to the open position for installation and maintenance work.
European union
To meet the European Union Directives, according to standard EN 60204-1, Safety of
Machinery, the disconnecting device must be one of the following types:
• a switch-disconnector of utilization category AC-23B (EN 60947-3)
• a disconnector having an auxiliary contact that in all cases causes switching
devices to break the load circuit before the opening of the main contacts of the
disconnector (EN 60947-3)
• a circuit breaker suitable for isolation in accordance with EN 60947-2.
North America
The ACS320 drive does not include a disconnect device. A means to disconnect
input power must be installed between the AC power source and the ACS320 drive.
This branch circuit protection must:
• be sized to conform to applicable safety regulations, including but not limited to,
both National and local electrical codes.
• be locked in an open position during installation and maintenance work.
The disconnect device must not be used to control the motor. Instead use the control
panel, or commands to the I/O terminals for motor control.
Other regions
The disconnecting device must conform to the applicable safety regulations.
Checking the compatibility of the motor and drive
Check that the 3-phase AC induction motor and the drive are compatible according to
the rating table in section Ratings on page 384 or in section Definitions on page 385.
The table lists the typical motor power for each drive type.
To Next Page
Loading...
