RAVE
®
FAN
36
Pub. No. 54450034 Rev. 4 - © DECEMBER 2014
36
Pub. No. 54450034 Rev. 4 - © DECEMBER 2014
TROUBLESHOOTING
MOTOR WOBBLE
Ensure all hardware is tight.
Ensure stabilization cables are taunt.
Ensure the motor bracket is installed vertical.
Tighten all mounting hardware and secure in the vertical position by tightening the appropriate
stabilization cable.
HIGH-FREQUENCY MOTOR NOISE
When installing a fan in an abnormally quiet area, one may notice a high frequency noise from the
motor. This noise is the VFD’s carrier frequency. By default, the carrier frequency is set at 4 kHz to
maximize the performance of the drive. To decrease audible noise the carrier frequency (SFr) may
be increased up to 16 kHz. However, increasing the carrier frequency above 4 kHz results in
decreased drive performance. Adjust this setting only as high as necessary to mitigate the
objectionable noise.
For optimal performance and component life, the maximum fan speed (HSP) should be limited
such that the output current (LCr) does not exceed the maximum allowable drive current for the
selected carrier frequency.
Table 6
2
4
6
8
10
12
14
16
2HP 600V Altivar 312
2.7
2.7
2.5
2.4
2.2
2.1
1.9
1.7
2HP 400V Altivar 312
4.1
4.1
3.8
3.6
3.4
3.2
2.9
2.6
2HP 200V Altivar 312
8.0
8.0
7.6
7.2
6.8
6.4
5.8
5.2
1HP 200V Altivar 12
4.2
4.2
3.9
3.7
3.5
3.3
3.1
2.9
Maximum Drive Output Current (Amps)
Carrier Frequency kHz (SFr)
Содержание Rave RHC 1234567-001
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