Electrical Installation Procedures - Danfoss VLT 5000 Series Manual

I Electrical installation procedures
The following procedure will guide you through
a correct electrical installation of your VLT
frequency converter.
Before you start, please read the safety instructions
on the first page of this instruction.
Note that the user is responsible, that the VLT
frequency converter, motor and other units are
installed according to recognized local regulations.
Pay special attention to cable dimensioning, pre-fuses,
earthing and over-current protection.
1. Mechanical installation check
Check the following before the electrical installation:
1. Check for proper ambient operating conditions.
See Derating for ambient temperature.
2. Check for free flow of cooling air.
3. Check that no visible damage has occured to the
crate and drive during transport and that the tilt
indicator on the crate indicates a correct transport.
2. Before electrical installation
Remove the protective cover to get access to
terminals for control and power cables. The protective
cover can be removed by means of a screwdriver.
3. Load sharing connection
1. Tighten the load sharing terminals with
a torque of 42 Nm.
2. Install the wire for DC+ to terminal 89.
3. Install the wire for DC- to terminal 88.
Note that voltages up to 850 V DC will occur
on the terminals when power is connected.
4. Mains connection
1. Check that the mains voltage matches the VLT
frequency converter nominal input voltage.
2. Ensure that the power supply can supply
the necessary current to the VLT frequency
converter, see Technical data.
3. Tighten the mains and earth terminals with
a torque of 42 Nm.
4. Install earth from the power supply to
the earth bus bar.
5. Install line 1 from the power supply to
terminal R/L1/91.
6. Install line 2 from the power supply to
terminal S/L2/92.
7. Install line 3 from the power supply to
terminal T/L3/93.
MG.56.A2.02 - VLT is a registered Danfoss trademark
®
VLT 5000/6000/8000 Series
5. Brake resistor (only VLT 5000)
1. Tighten the brake resistor terminals with
a torque of 11.3 Nm.
2. Install the wire for R+ to terminal 81.
3. Install the wire for R- to terminal 82.
6. Motor connection
1. Tighten the motor and earth terminals with
a torque of 42 Nm.
2. Install earth from the motor to the earth bus bar.
3. Install W from the motor to terminal W/T3/98.
4. Install V from the motor to terminal V/T2/97.
5. Install U from the motor to terminal U/T1/96.
7. Protective cover
Remount the protective cover.
8. Power up
Check the following before you power up the
VLT frequency converter:
1. Check for proper mains fuses. See Technical data.
2. Check for a proper earthing.
3. Check for proper mains, load sharing, brake
and motor connection.
4. Check that there are no tools in the enclosure.
Close the doors and connect the power to the VLT
frequency converter. The green voltage indicator
lamp (ON) on the control panel is activated when
the VLT frequency converter receives voltage.
The VLT frequency converter can now be
programmed via the control panel.
Note that in parameter 620 Operating mode you
can select Function with de-activated inverter
[1]. This means that without the motor shaft
running you can control the influence of the
control signal on the control card.
Wait at least 15 minutes before you open
the doors, after the VLT frequency converter
has been disconnected from mains
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