Measurement maximum frequencies – Rockwell Automation 1441-DYN25-Z Dynamix 2500 Data Collector User Manual
Page 78
78
Rockwell Automation Publication 1441-UM001B-EN-P - September 2012
Chapter 3
Setting Up Measurements
Measurement Maximum Frequencies
The measurement maximum frequency is part of the collection specification
(Setup > Collection). See
Collection Specification Dialog Box on page 75
.
Select the collection specification when you set up the measurement definition.
The Emonitor software and the Dynamix 2500 data collector support the
following maximum frequencies in Hz (CPM).
Peak
Use for detection of acceleration, velocity, and high frequency energy. This is the
peak (0 to maximum) amplitude of a sine wave at the frequency of interest and is
calculated from the RMS value.
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, the Emonitor software 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,
the Emonitor software uses a Peak-Peak signal detection type instead. This value
is not calculated but is measured directly.
Table 21 - Signal Detection Types
Signal
Detection Type
Description
Table 22 - 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)
80,000 (4,800,000)
128
(1)
(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)*
(1) These values are available in the Dynamix 2500 data collector only in Offroute data collection.