Danfoss vlt aqua User Manual

2.1.5 Caution
The adjustable frequency drive's DC link capacitors remain charged after power has been disconnected. To avoid an electrical shock
hazard, disconnect the adjustable frequency drive from line power before carrying out maintenance. Before doing service on the
adjustable frequency drive, wait at least the amount of time indicated below:
Voltage Power size Min. Waiting Time
380–480 V 150–350 HP [110–250 kW] 20 minutes
450–1350 HP [315–1000 kW] 40 minutes
525–690 V 60–550 HP [45–400 kW] 20 minutes
450–1200 kW 30 minutes
Be aware that there may be high voltage on the DC link even when the LEDs are turned off.
2.1.6 Avoid unintended Start.
While the adjustable frequency drive is connected to line power, the motor can be started/stopped using digital commands, bus
commands, references or via the Local Control Panel.
• Disconnect the adjustable frequency drive from line power whenever personal safety considerations make it necessary to avoid an unintended
start.
• To avoid an unintended start, always activate the [OFF] key before changing parameters.
• Unless terminal 37 is turned off, an electronic fault, temporary overload, a fault in the line power supply or lost motor connection may cause a
stopped motor to start.
VLT AQUA High Power Instruction Manual 2 Safety
MG.20.P3.22 - VLT
®
is a registered Danfoss trademark 2-3
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Danfoss vlt aqua Specifications

General

Supply Voltage	200-240V, 380-500V, 525-600V
Enclosure	IP20
Features	Energy optimization
Approvals	CE, UL, cUL
Input Voltage Range	200-240V, 380-500V, 525-600V
Output Voltage Range	0 to supply voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Short circuit, Ground fault
Communication Interfaces	PROFIBUS
Cooling Method	Air-cooled