Owner manual

72 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). See Figure on page 69
.
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)*