VLT ® 2900 Series For all unit types, external pre-fuses can be fitted in the mains supply to the frequency converter. For UL/cUL applications with a mains voltage of 200-240 Volt, use pre-fuses type Bussmann KTN-R (200-240 Volt) or Ferraz Shawmut type ATMR (max. 30A). For UL/cUL applications with a mains voltage of 380-480 Volt, use pre-fuses type Bussmann KTS-R (380-480 Volt). See Technical data for correct dimensioning of pre- fuses. Pre-fuses No. Motor voltage 0-100% of mains voltage.
3 wires of motor 6 wires out of motor, Delta con- nected 6 wires out of motor, Star con- nected U2, V2, W2 to be interconnec- ted separely (optional terminal block) Please note that at 1 x 220-240 Volt the neutral wire must be attached to terminal N (L2) and the phase wire must be connected to terminal L1 (L1) . Mains connection No. Earth connection See Technical data for correct dimensioning of cable cross-section. NB! Please check that the mains voltage fits the mains voltage of the frequency con- verter, which can be seen from the name- plate. 400-Volt units with RFI-filters may not be connected to mains supplies in which the voltage between phase and earth is more than 300 Volts.
Please note that for the IT mains and the delta earth the mains volt- age can exceed 300 Volts between phase and earth. Units with type code R5 can be connected to mains supplies with up to 400 V between phase and earth. Installation See Technical data for correct dimensioning of cable cross-section. Motor connection Connect the motor to terminals 96, 97, 98. Connect earth to terminal 99. MG.29.A3.02 - VLT ® is a registered Danfoss trademark 63 96 97 98 U V W U1 W2 V1 U2 W1 V2 U1 V1 W1 PE No. N(L2) L1(L1) (L3) Mains voltage 1 x 220-240 V N L1 No. 95 Earth connection No. N(L2) L1(L1) (L3) Mains voltage 3 x 220-240 V L2 L1 L3 No. 95 Earth connection No.
91 92 93 Mains voltage 3 x 380-480 V L1 L2 L3 No. 95 Earth connection