Measurement maximum frequencies – Rockwell Automation 1441-PEN25-Z Enpac 2500 Data Collector User Manual
Page 72
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Rockwell Automation Publication GMSI10-UM002D-EN-E - August 2012
Chapter 2
Setting Up Measurements
• True Peak
- Use to detect impacts and random transients. The dynamic
time signal contains the absolute value of the largest peak (positive or
negative) within a specified time window. Returns a magnitude value only.
If used with a spectrum measurement, Emonitor uses a Peak signal
detection type instead. This value is not calculated but is measured
directly.
• True Peak-Peak
- Use to detect impacts and random transients. The
dynamic time signal contains the absolute value of the largest peak to peak
distance within a specified time window. Returns a magnitude value only.
If used with a spectrum measurement, Emonitor uses a Peak-Peak signal
detection type instead. This value is not calculated but is measured
directly.
Measurement Maximum Frequencies
The measurement maximum frequency is part of the collection specification
(Setup > Collection).
You select the collection specification when you set up the measurement
definition. Emonitor and the Enpac 2500 support the following maximum
frequencies in Hz (CPM).
*
These values are available in the Enpac 2500 only in off route data collection
You can either select a value from the drop down list, or you can enter a value in
Maximum frequency in the Collection Specification dialog. If you enter a value
that does not match one of the values above, Emonitor uses the next higher
maximum frequency.
Table 15 - Maximum Frequencies
Hz
CPM
Hz
CPM
Hz
CPM
Hz
CPM
Hz
CPM
10
(600)
200
(12,000)
1100
(66,000)
3000
(180,000)
12,800*
(768,000)*
20
(1200)
250
(15,000)
1200
(72,000)
3125*
(187,500)*
13,000
(780,000)
25
(1500)
256*
(15,360)*
1250
(75,000)
3200
(192,000)
15,000
(900,000)
32*
(1920)*
300
(18,000)
1280*
(76,800)*
4000
(240,000)
16,000
(960,000)
40
(2400)
320
(19,200)
1300
(78,000)
5000
(300,000)
18,000
(1,080,000
50
(3000)
400
(24,000)
1400
(84,000)
6000
(360,000)
20,000
(1,200,000)
64*
(3840)*
500
(30,000)
1500
(90,000)
6250*
(375,000)*
25,000
(1,500,000)
80
(4800)
600
(36,000)
1600
(96,000)
6400
(384,000)
30,000
(1,800,000)
100
(6000)
625
(37,500)
1700
(102,000)
7000
(420,000)
32,000*
(1,920,000)*
120
(7200)
640*
(38,400)*
1800
(108,000)
8000
(480,000)
40,000
(2,400,000)
125
(7500)
700
(42,000)
1900
(114,000)
9000
(540,000)
128*
(7680)*
800
(48,000)
2000
(120,000)
10,000
(600,000)
150
(9000)
900
(54,000)
2500
(150,000)
12,000
(720,000)
160
(9600)
1000
(60,000)
2560*
(153,600)*
12,500*
(750,000)*