Siemens LMV3 series, Technical Instructions

Page: 121 / 224

LMV Series Technical Instructions
Document No. LV3-1000
SCC Inc.
Page 17 Section 5
Name and Timing of Speed Band
Neutral Band
No Time Limit
Near Zone Band
8 to 16 sec
Outside Near
Zone 3 to 7
seconds
High Risk
Limit
1 second
High Limit of Speed Band +0.5% to 3.5% +2.0% to 5.5% Near to +10%
10% or
greater
Low Limit of Speed Band -0.5% to -3.5% -2.0% to -5.5% Near to -10% -10% or less
Parameter to Adjust Width of Band 662 663 None None
Parameter to Adjust Band Timing None 664 665 None
RPM Tolerance for Standardized Speed
of 3544 RPM
Neutral Band = 2%, Near Zone = 4%
+/- 71 +/- 142 +/- 354
More than
+/- 354
Time VSD
Standardized
speed line
Max Min Max Min Max Min
sec % RPM RPM RPM RPM RPM RPM RPM
R
A
M
P
U
P
0 55 1949 2020 1878 2091 1807 2303 1595
3 60 2126 2197 2055 2268 1984 2480 1772
6 65 2304 2375 2233 2446 2162 2658 1950
9 70 2481 2552 2410 2623 2339 2835 2127
12 75 2658 2729 2587 2800 2516 3012 2304
15 80 2835 2906 2764 2977 2693 3189 2481
18 85 3012 3083 2941 3154 2870 3366 2658
21 90 3190 3261 3119 3332 3048 3544 2836
24 95 3367 3438 3296 3509 3225 3721 3013
27 100 3544 3615 3473 3686 3402 3898 3190
Figure 5-5: Blower Speed Monitoring Bands
1200
1450
1700
1950
2200
2450
2700
2950
3200
3450
3700
3950
4200
0 10 20 30 40
B
lo
w
e
r
S
p
e
e
d
(
R
P
M
)
Time (sec)
Standardized Baseline
Neutral Max
Neutral Min
Near Zone Max
Near Zone Min
High Risk Limit
High Risk Limit
Blower Speed Monitoring Bands