Commissioning vacon • 143
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
8
8. COMMISSIONING
8.1 Safety
Before commissioning, note the following directions and warnings:
Internal components and circuit boards of the AC drive are live when VACON
®
NX
Liquid-Cooled drive 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 B–, B+/R+,
R– are live when VACON
®
NX Liquid-Cooled drive 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 Liquid-Cooled drive is disconnected from mains.
Do not make any connections with the AC drive connected to the mains.
After having disconnected the AC drive from the mains, wait until 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 Liquid-Cooled
drive connections. Do not even open the cover before this time has expired.
Before connecting the NX Liquid-Cooled drive to mains, ensure the functionality of
the coolant circulation and check the circulation for possible leaks.
Before connecting the drive to mains make sure that the switchgear enclosure
door is closed.
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