1. Check for proper ambient operating conditions. See
Derating for ambient temperature
in the relevant Design Guide.
2. Check for free flow of cooling air.
3. Check that no visible damage has occurred to the crate and drive during transport.
2. Load sharing connection
1. Install the wire for DC+ to terminal 89.
2. Install the wire for DC- to terminal 88.
Note that voltages up to 1099 V DC will occur on the terminals when power is con-
nected.
3. Brake resistor (only VLT 5000)
1. Install the wire for R+ to terminal 82.
2. Install the wire for R- to terminal 81.
4. Motor connection
1. Install earth from the motor to the earthing point.
2. Install W from the motor to terminal W/T3/98.
3. Install V from the motor to terminal V/T2/97.
4. Install U from the motor to terminal U/T1/96.
5. EMC shield
1. Mount the EMC shield between the motor and mains supply connections.
NOTE: Only supplied on drives with an RFI filter.
6. Mains connection
1. Check that the mains voltage matches the VLT frequency converter nominal input volt-
age.
2. Ensure that the power supply can supply the necessary current to the VLT frequency
converter, see
Technical data
in the relevant Operating Instructions.
3. Install earth from the power supply to the earthing point.
4. Install line 1 from the power supply to terminal R/L1/91.
5. Install line 2 from the power supply to terminal S/L2/92.
6. Install line 3 from the power supply to terminal T/L3/93.
7. Power up
Check the following before you power up the VLT frequency converter:
1. Check for proper mains fuses. See
Technical data
in the relevant Operating Instructions.
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.
6. Start-Up Check
VLT
®
5000/6000/8000
High Power Installation Guide
48
MI.90.J2.02 - VLT
®
is a registered Danfoss trademark
6
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