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 motor, Delta connected
U1 V1 W1 6 wires out of motor, Star connected
U2, V2, W2 to be interconnected separately
(optionalterminalblock)
No. 99 Ground connection
PE
All types of three-phase as ynchronous standard
motors can be connected to the FC 300. Normally,
small mot ors are star-connected (230/4 00 V, ∆/
Y). Large motors are delta-connected (400/690 V,
∆/Y).Refertothemotornameplateforcorrect
connection mode and voltage.
NOTE
In motors without phase insulation paper or other insulation reinforcement suitable for operation with
voltage supply (such as an adjustable frequency drive), fit an LC filter on the output of the FC 300.
" Motor cables
See Technical data for correct sizing of motor cable cross-s ection and le ngth. A lways comply
with national and local regulations on cable cross-section.
• Use a shielded/arm oured motor cable to comply with EMC emission specifications
unless otherwise stated for the RFI filter used.
• Keep the motor cable a s short as pos sible 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 ends (pigtails), which will spoil high frequency screening effects.
• If it is necessary to split the shield to install a motor isolator or motor relay, the shield
must be continued with the lowest possible HF impe dance .
17
MG.33.A4.22 - VLT is a registered Danfoss trademark
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