Danfoss VLT HVAC Drive FC 100 Operating Instructions Manual page 51

®
VLT HVAC DRIVE High Power
Operating Instruction
3.6.7. Shielded Cables
It is important that shielded and armoured cables are connected in a proper way to ensure high
EMC immunity and low emissions.
Connection can be made with either cable glands or clamps:
•
•
3.6.8. Motor cable
The motor must be connected to terminals U/T1/96, V/T2/97, W/T3/98. Earth to terminal 99. All
types of three-phase asynchronous standard motors can be used with a frequency converter unit.
The factory setting is for clockwise rotation with the VLT frequency converter output connected
as follows:
Terminal No.
96, 97, 98, 99
• Terminal U/T1/96 connected to U-phase
• Terminal V/T2/97 connected to V-phase
• Terminal W/T3/98 connected to W-phase
The direction of rotation can be changed by switching two phases in the motor cable or by chang-
ing the setting of par. 4-10.
3.6.9. Brake Cable
(Only standard with letter B in position 18 of typecode).
Terminal No.
81, 82
The connection cable to the brake resistor must be screened. Connect the screen by means of
cable clamps to the conductive back plate at the frequency converter and to the metal cabinet of
the brake resistor.
Size the brake cable cross-section to match the brake torque. See also
90.Fx.yy
EMC cable glands: Generally available cable glands can be used to ensure an optimum
EMC connection.
EMC cable clamp: Clamps allowing easy connection are supplied with the frequency con-
verter.
Function
Mains U/T1, V/T2, W/T3
Ground/Earth
Function
Brake resistor terminals
MI.50.Sx.yy
and for further information regarding safe installation.
MG.11.F1.02 - VLT ® is a registered Danfoss trademark
3. How to Install
Brake Instructions, MI.
51
3