Blower Speed Monitoring Bands - Siemens LMV3 series Technical Instructions

LMV Series
4200
3950
3700
3450
3200
2950
2700
2450
2200
1950
1700
1450
1200
0
Name and Timing of Speed Band
High Limit of Speed Band
Low Limit of Speed Band
Parameter to Adjust Width of Band
Parameter to Adjust Band Timing
RPM Tolerance for Standardized Speed
of 3544 RPM
Neutral Band = 2%, Near Zone = 4%
Time VSD
sec %
0 55
3 60
6 65
9 70
12 75
15 80
18 85
21 90
24 95
27 100
SCC Inc.

Blower Speed Monitoring Bands

10
Neutral Band
No Time Limit
+0.5% to 3.5%
-0.5% to -3.5%
662
None
+/- 71
Standardized
Max
speed line
RPM RPM
1949 2020
2126 2197
2304 2375
2481 2552
2658 2729
2835 2906
3012 3083
3190 3261
3367 3438
3544
3615
Figure 5-5: Blower Speed Monitoring Bands
Page 17
Standardized Baseline
Neutral Max
Neutral Min
Near Zone Max
Near Zone Min
High Risk Limit
High Risk Limit
20 30
Time (sec)
Near Zone Band
8 to 16 sec
+2.0% to 5.5%
-2.0% to -5.5%
663
664
+/- 142
Min Max Min
RPM RPM RPM
1878 2091 1807
2055 2268 1984
2233 2446 2162
2410 2623 2339
2587 2800 2516
2764 2977 2693
2941 3154 2870
3119 3332 3048
3296 3509 3225
3473 3686 3402
Technical Instructions
Document No. LV3-1000
40
Outside Near High Risk
Zone 3 to 7 Limit
seconds 1 second
10% or
Near to +10%
greater
Near to -10% -10% or less
None None
665
None
More than
+/- 354
+/- 354
Max Min
RPM RPM
2303 1595
2480 1772
2658 1950
2835 2127
3012 2304
3189 2481
3366 2658
3544 2836
3721 3013
3898 3190
Section 5