9 Commissioning
9.1 Safety Checks before Starting the Commissioning
Before starting the commissioning, read these warnings.
DANGER
SHOCK HAZARD FROM INVERTER POWER UNIT COMPONENTS
The inverter power unit components are live when the inverter is connected to DC supply. A contact with this voltage can lead
to death or serious injury.
-
Do not touch the components of the power unit when the inverter is connected to DC supply. Before connecting the
inverter to DC supply, make sure that the covers of the inverter are closed.
DANGER
SHOCK HAZARD FROM INVERTER TERMINALS
The motor terminals U, V, W, the brake resistor terminals, or the DC terminals are live when the inverter is connected to DC
supply, also when the motor does not operate. A contact with this voltage can lead to death or serious injury.
-
Do not touch the motor terminals U, V, W, the brake resistor terminals, or the DC terminals when the inverter is connected
to DC supply. Before connecting the inverter to DC supply, make sure that the covers of the inverter are closed.
DANGER
SHOCK HAZARD FROM DC LINK OR EXTERNAL SOURCE
The terminal connections and the components of the drive can be live 5 minutes after the inverter is disconnected from the DC
supply and the motor has stopped. Also the load side of the inverter can generate voltage. A contact with this voltage can lead
to death or serious injury.
-
Before doing electrical work on the inverter:
•
Disconnect the inverter from the DC supply and make sure that the motor has stopped.
•
Lock out and tag out the power source to the inverter.
•
Make sure that no external source generates unintended voltage during work.
•
Wait 5 minutes before opening the cabinet door or the cover of the inverter.
•
Use a measuring device to make sure that there is no voltage.
WARNING
SHOCK HAZARD FROM INVERTER CONTROL TERMINALS
The control terminals can have a dangerous voltage also when the drive is disconnected from DC supply. A contact with this
voltage can lead to injury.
-
Make sure that there is no voltage in the control terminals before touching the control terminals.
Commissioning
Operating Guide | VACON® NX Inverters FI4-FI8
AQ299433367205en-000101 / DPD00908
98 | Danfoss A/S © 2019.07
Summary of Contents for VACON NX FI4
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