Commissioning And Running; Maintenance And Component Replacement - IMO HD2 IP Series Instruction Manual

HD2 IP55 High-ingress Protection Series Inverters

1.4.2 Commissioning and running







Note:
Do not switch on or switch off input power sources of the inverter frequently.

For inverters that have been stored for a long time, set the capacitance and carry out

inspection and pilot run on the inverter before use.
Close the front cover before running; otherwise, electric shock may occur.


1.4.3 Maintenance and component replacement




Disconnect all power sources applied to the inverter before terminal wiring and
wait for at least the time designated on the inverter after disconnecting the
power sources.
High voltage is present inside the inverter during running. Do not carry out any
operation on the inverter during running except for keypad setup. It must be
noted that the control terminal of inverter is ELV (Extra Low Voltage) circuit,
which cannot be connected directly to the accessible terminals of other
devices if no protective isolation measure is taken. For instance, RS485
terminal of the inverter can be connected to RS232 interface of the PC only
after a converter with protective isolation is connected between them.
The inverter may start up by itself when P01.21 (restart after power down) is
set to 1. Do not get close to the inverter and motor.
The inverter cannot be used as "Emergency-stop device".
The inverter cannot act as an emergency brake for the motor; it is a must to
install mechanical brake device.
During driving permanent magnet synchronous motor, besides above-
mentioned items, the following work must be done before installation and
maintenance.
1. Disconnect all the input power sources including main power and control
power.
2. Ensure the permanent-magnet synchronous motor has been stopped, and
the voltage on output end of the inverter is lower than 36V.
3. After the permanent-magnet synchronous motor is stopped, wait for at least
the time designated on the inverter, and ensure the voltage between "+"
and "-" is lower than 36V.
4. During operation, it is a must to ensure the permanent-magnet
synchronous motor cannot run again by the action of external load; it is
recommended to install effective external brake device or disconnect the
direct electrical connection between permanent-magnet synchronous
motor and the inverter.
Only well-trained and qualified professionals are allowed to perform
maintenance, inspection, and component replacement on the inverter.
Disconnect all the power sources applied to the inverter before terminal wiring,
and wait for at least the time designated on the inverter after disconnecting the
power sources.
Take measures to prevent screws, cables and other conductive matters from
falling into the inverter during maintenance and component replacement.
-3-
Safety Precautions