CIRCUTOR QNA500 series - Manual (Page 23)

POWER QUALITY ANALYZER QNA500 8IO
QNA500 8IO Instruction manual 23 / 111
6.1.2.- MEASUREMENT MODULE (QNA500)
QNA500 is the module that measures the electrical parameters of the MULTIFIT system. This module
has 5 voltage measurement channels, 4 current measurement channels and 1 earth leakage current
measurement channel.
QNA500 has a series of LEDs that provide information about the correct connections of the power
quality analyzer and its correct operation.
LED Power off Power on Flashing
POW No power External power supply (1 sec.)
Battery power supply (200 ms)
STATUS No error Ethernet not initialised Memory error
V No measurement
Correct connection: 3 balanced
voltages
Incorrect connection: RMS voltages
I No measurement
Correct connection: 3 balanced
currents
Incorrect connection: RMS currents
Act1 No activity with the previous module
TX/RX ETH activity with the previous
module
Link1
ETH Link with the previous
module ETH No link with the previous
module
Act2 No activity with the next module
TX/RX ETH activity with the next
module
Link2
ETH Link with the next connected
module ETH No link with the next connected
module
LED indicator
lights
Communications
ports:
RS-485
RS-232
ETHERNET
External power
supply