Operation
M-Max Series Adjustable Frequency Drive MN04020003E—October 2013 www.eaton.com 51
Operational Hazard Warnings
Observe the following Warnings and Cautions.
WARNING
Commissioning is only to be completed by qualified
technicians.
WARNING
Hazardous voltage!
The safety instructions on Page x must be followed.
WARNING
The components in the frequency inverter’s power
section are energized if the supply voltage (line voltage)
is connected. For instance: power terminals L1, L2/N, L3,
R+, R–, U/T1, V/T2, W/T3.
The control signal terminals are isolated from the line
power potential.
There can be a dangerous voltage on the relay terminals
(22 to 26) even if the frequency inverter is not being
supplied with line voltage (for example, integration of
relay contacts in control systems with 230 Vac).
WARNING
The components in the frequency inverter’s power
section remain energized up to five (5) minutes after the
supply voltage has been switched off (intermediate
circuit capacitor discharging time).
Pay attention to hazard warnings!
WARNING
Following a shutdown (fault, line voltage off), the motor
can start automatically (when the supply voltage is
switched back on) if the automatic restart function has
been enabled.
(See parameter “P6.13”.)
CAUTION
Debounced inputs may not be used in the safety circuit
diagram.
Any contactors and switching devices on the power side are
not to be opened during motor operation. Inching operation
using the power switch is not permitted.
Contactors and switching devices (repair and maintenance
switches) on the motor side must never be opened while the
motor is in operation when the frequency inverter is set to
speed control operating mode (P11.8 = 1).
Inching operation of the motor with contactors and switching
devices in the output of the frequency inverter is not
permitted.
CAUTION
Debounced inputs may not be used in the safety circuit
diagram.
Make sure that there is no danger in starting the motor.
Disconnect the driven machine if there is a danger in an
incorrect operational status.
Note: The START button is only functional if the KEYPAD
operating mode is activated.
The STOP button is active in all operating modes. It
can be deactivated with parameter (P6.16 = 0).
Note: Operating ranges must be approved by the motor
manufacturer if motors are to be operated with
frequencies higher than the standard 50 or 60 Hz,
otherwise the motors could be damaged.
DANGER
5 MIN
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