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•
S
Se
ettttiin
ng
g P
Prro
oh
hiib
biitte
ed
d F
Frre
eq
qu
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en
nc
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es
s
Example: Vibration encountered between 10.0 and 16.0 Hz, again between
30.0 and 36.0 Hz, and again between 50.0 and 56.0 Hz.
Solution:
• Set constant n
n 5
5 8
8 to “ 13.0 ”, constant n
n 5
5 7
7 to “ 33.0 ”, and
constant n
n 5
5 6
6 to “ 53.0 ”. Each is the center of one of the
problem frequency bands.
• Set constant n
n 5
5 9
9 to “ 3.0 ”. This will cause the GPD 205 to
reject all frequency command values between 10.0 and 16.0 HZ,
between 30.0 and 36.0 Hz, and between 50.0 and 56.0 Hz.
A frequency command in any deadband will be converted to the bottom
value of the deadband, e.g. a command of 33.0 Hz would result in a run
frequency of 30.0 Hz.
Note that if n
n 5
5 6
6 ≥ n
n 5
5 7
7 ≥ 5
5 8
8 is not satisfied, the drive displays “ E
E rr rr ” for 1
second, and will reset the data of the selected constant to its original setting.
53
FREQUENCY
COMMAND
n
n5
59
9
n
n5
59
9
n
n5
59
9
n
n5
59
9
n
n5
59
9
n
n5
59
9
n
n5
56
6
n
n5
57
7
n
n5
58
8
Total Deadband = 6.0 Hz
(± constant n
n5
59
9 setting of 3.0 Hz)
53.0 Hz
33.0 Hz
13.0 Hz
OUTPUT FREQUENCY (Hz)
for more: efesotomasyon - Yaskawa drive