Rockwell Automation 140G-NTK-E12 LSIG and LSIG-MM Release - Manual (Page 36)

DIR 1000587R0002 (L3821)
(36)
A harmonic analysis of samples acquired and displayed in the “Wave Forms” pages can be conducted.
The page on the left is displayed, containing the module of the harmonics from the 1 st to the 40 th (up to
the 35 th for a mains frequency set to 60Hz) given as a percentage of the fundamental harmonic (harmonic
no. 1), which is then given as 100%.
Using the ↑ or ↓ keys, you can go to the bar of interest (at the harmonic “No.” required, the bar begins
to flash) and read the corresponding percentage value.
Measuring accuracy is 5%.
Total distorsion : 150.0 %
Harmonic n. 1/40 : 100.0 %
Ne
Value of harmonic No.
No. of currently-selected harmonic
4.1.4 Data Logger
The Data Logger is activated by Vaux.
For further information, see par. 5.1
4.2 Communication module
4.2.1 General characteristics
The communication module is used to connect the relay to a Modbus network for remote supervision and control of circuit breakers.
4.2.2 Front view
- “Power” LED on (lit with Vaux)
- LED RX/TX (data send/receive signal)
4.2.3 Releases complete with module
- optional for LSIG-MM
4.2.4 Power supply
The communication module is powered by the relay only when 24V auxiliary voltage is available.
4.2.5 Communication functions available
The communication function on the LSIG-MM releases with communication module is listed in the table:
Protocol Modbus RTU
Physical interface RS-485
Baud rate 9600 - 19200 bit/s