COMMISSIONING vacon • 99
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10
10. COMMISSIONING
10.1 Safety
Before commissioning, note the following directions and warnings:
Internal components and circuit boards of the frequency converter (except for the
galvanically isolated I/O terminals) are live when Vacon NX is connected to mains
potential. Coming into contact with this voltage is extremely dangerous and may
cause death or severe injury.
The motor terminals U, V, W and the DC-link/brake resistor terminals –/+ are live
when Vacon NX is connected to mains, even if the motor is not running.
The control I/O-terminals are isolated from the mains potential. However, the relay
outputs and other I/O-terminals may have a dangerous control voltage present
even when Vacon NX is disconnected from mains.
Do not make any connections with the frequency converter connected to the mains.
After having disconnected the frequency converter from the mains, wait until the
fan stops and the indicators on the keypad go out (if no keypad is attached see the
indicator through the keypad base). Wait 5 more minutes before doing any work on
Vacon NX connections. Do not even open the cabinet door or cover before this time
has expired.
Before connecting the frequency converter to mains make sure that the Vacon NX
front cover is closed.
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