FC 300 Instruction Manual
How to Install
No. 96 97 98 Motor voltage 0-100%
U V W of AC line voltage.
3 wires out of motor
U1 V1 W1
W2 U2 V2
6 wires out of m otor, Delta-connected
U1 V1 W1 6 wires out of motor, Star-connected
U2, V2, W2 to be interconnected separately
No. 99 Ground connection
PE
All types of three-phase asynchronous standard
motors can be connected to the FC 300. Normally,
small motors are star-connecte d (230/400 V,
/Y). Large motors are normally delta-connected
(400/690 V,
/Y). Refer to the motor nameplate
for correct connection mode and voltage.
NOTE
In motors without phase in sulation paper or other insulation reinforcement suitable for operation
with voltage supply (such as adjustable frequency drive), fit an LC filter on the output of the FC 300.
" Motor cables
See Technical data for correct sizing of m otor cable cross-section and length. Always comply
with national and local regulations on cable cross-sec tion.
• Use a shielded/armoured motor cable to comply with EMC emission specifications
unless otherwise stated for the RFI filter used.
• Keep the m ot or cable as short as possible to reduce the noise level and leakage currents.
• Connect the motor cable shield to the decoupling plate of the FC 300 and to the metal cabinet of the motor.
• Make the shield connections with the largest possible surface area (cable clamp). This is
done by using the supplied installation devices in the FC 300.
• Avoid mounting with twisted screen end s (pigtails), which will spoil high frequency screening effects.
• If it is necessary to split the shield to install a motor isolator or motor r elay, the shield
must be continued with the lowest possible HF impedance.
20
MG.33.A6.22 - VLT is a registered Danfoss trademark
To Next Page
Loading...
Need help?
General
