Operation
04/10 MN04020001Z-EN
56
Operational hazard warnings
Please observe the following notes.
j
Danger!
Commissioning is only to be completed by qualified
technicians.
j
Danger!
Hazardous voltage!
The safety instructions on pages I and II must be followed.
j
Danger!
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 (e.g., integration of relay
contacts in control systems with 230 V AC).
j
Danger!
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!
j
Danger!
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.
(h parameter „P6.13“
h
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.
h
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.
h
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).
h
If motors are to be operated with frequencies higher than
the standard 50 or 60 Hz, then these operating ranges
must be approved by the motor manufacturer. The motors
could be damaged otherwise.
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