Rockwell Automation 140G-NTK-E12 LSIG and LSIG-MM Release - Manual (Page 38)

DIR 1000587R0002 (L3821)
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5.1.2.1 Data Logger enabling
The Data Logger can be enabled by entering a password:
5.1.2.2 Setting the sampling frequency
The menu enables setting frequency by which measurements are saved, among 4 fixed frequencies: 600 Hz, 1200 Hz, 2400 Hz or 4800 Hz.
Maximum duration of stored data recording (also see par. 5.1.3) depends on the frequency selected, and is given in the following table:
Frequency RECoRDING TIME
600 Hz 27.3 s
1200 Hz 13.6 s
2400 Hz 6.8 s
4800 Hz 3.4 s
Note: Selection of sampling frequency is an important factor. As a matter of fact, presence of high-order harmonic waves may give rise to aliasing on processing of
collected data. Maximum frequency should be used in case of harmonic distortion, or else data processing may give results that do not match actual system conditions.
5.1.2.3 Setting the standard triggers
It is possible to select one of the following triggers.
1. None
2. Every alarm
3. L timing
4. Every trip
4/9
Data logger
Modules
Data logger
Main Frequency
Settings
1/6
On
Sampling freq.
Stop event
Enable
Data logger 1/4
600 Hz
1200 Hz
2400 Hz
600 Hz
Sampling freq.
Enter ↵
1/1
Off
Toroid size
Enable
Data logger Password
Enter password
0***
2/2
Off
On
Off
Enable
Enter ↵ PWD + Enter ↵
3/4
None
Sampling freq.
Stop event
Enable
Data logger 1/5
None
Any Alarm
L Prealarm
None
Stop event
Any Trip
Custom
Enter ↵
5 Appendices
5.1 Data Logger (recorder)
The Data Logger function is available on the LSIG-MM units and can be used to automatically save the instantaneous values of certain analog
and digital measurements in a large-sized memory buffer by means of a Modbus bus, and transferred to any personal computer for processing.
The function stops recording every time a trip occurs in order to facilitate failure analysis.
5.1.1 General characteristics
Number of analog channels:
7
Number of digital events: 64
Maximum sampling frequency: 4800 Hz
Maximum sampling time: 27 s ( - 600 Hz sampling frequency)
5.1.2 Description of the Data Logger menu
From the Settings Menu of LSIG-MM units, access is given to Data Logger’s surfing menu: