NB!
Use a screened/armoured motor cable to comply with EMC emission specifications. For more information, see
EMC specifications
in the AF-600 FP/AF-650
GP
Design Guide
.
See section
General Specifications
for correct dimensioning of motor cable cross-section and length.
Screening of cables:
Avoid installation with twisted screen ends (pigtails). They spoil the screening effect at higher frequencies. If it is necessary to break the screen to install a motor
isolator or motor contactor, the screen must be continued at the lowest possible HF impedance.
Connect the motor cable screen to both the de-coupling plate of the frequency converter and to the metal housing of the motor.
Make the screen connections with the largest possible surface area (cable clamp). This is done by using the supplied installation devices within the frequency
converter.
Cable-length and cross-section:
The frequency converter has been EMC tested with a given length of cable. Keep the motor cable as short as possible to reduce the noise level and leakage
currents.
Switching frequency:
When frequency converters are used together with Sine-wave filters to reduce the acoustic noise from a motor, the switching frequency must be set according
to the instruction in par. F-26
Motor Noise (Carrier Freq)
.
Term. no.
96
97
98
99
U
V
W
PE
1)
Motor voltage 0-100% of mains voltage.
3 wires out of motor
U1
V1
W1
PE
1)
Delta-connected
W2
U2
V2
6 wires out of motor
U1
V1
W1
PE
1)
Star-connected U2, V2, W2
U2, V2 and W2 to be interconnected separately.
1)
Protected Earth Connection
AF-650 GP Design Guide
126
7
Содержание AF-650 GP Series
Страница 5: ...AF 650 GP Design Guide 4 1...
Страница 53: ...AF 650 GP Design Guide 52 4...
Страница 97: ...Please note airflow directions 6 1 5 Mechanical Dimensions AF 650 GP Design Guide 96 6...
Страница 98: ...Please note airflow directions AF 650 GP Design Guide 97 6...
Страница 99: ...Please note airflow directions AF 650 GP Design Guide 98 6...
Страница 100: ...Please note airflow directions AF 650 GP Design Guide 99 6...
Страница 173: ...Max cable length 150 m AF 650 GP Design Guide 172 9...
Страница 179: ...AF 650 GP Design Guide 178 9...