CIRCUTOR QNA500 series - Manual (Page 22)

POWER QUALITY ANALYZER QNA500 8IO
QNA500 8IO Instruction manual 22 / 111
6.- OPERATION OF THE QNA500 (MULTIFIT SYSTEM DESCRIPTION)
6.1.- Physical description
The QNA500 is a top performance power quality analyzer that is part of a new generation of products -
the MULTIFIT range. This innovative system can be used to add various modules to expand the
performance of the system while controlling the global electrical installation.
The QNA500 is composed of an M-BASE power supply and communications module that can power
the set of modules and intercommunicate them through its internal bus. This optimises the installation,
since various modules can be connected in parallel to a single M-BASE base module. In addition, this
module can communicate with any other module via its RS-232, RS-485 or ETHERNET ports.
Likewise, the QNA500 can take electrical voltage (5 independent channels) and current measurements
(5 independent channels) to supervise the installation and to detect existing anomalies, with the
purpose of analysing it and carrying out predictive maintenance.
6.1.1.- BASE MODULE (M-BASE)
M-BASE is the main module of the MULTIFIT system. This module is vital in any combination with the
systems of the MULTIFIT range, since it is responsible for powering all other modules and establishing
the communications with external devices.
M-BASE has 3 communications ports that can communicate the information of the connected modules
to external devices and systems. The ports are as follows:
• RS-232
• RS-485
• ETHERNET (TCP/IP)
The 3 communications ports operate as independent systems. In other words, they can simultaneously
request information from all connected modules. M-BASE module has a series of LED indicators that
are used to show the correct operation of the power supply and communication systems.
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
RS-232 Rest Data reception
RS-485 Rest Data reception
Act1 No activity with external sources External TX/RX ETH activity established
Link1
ETH Link with external
sources
ETH No link with external sources
Act2 No activity with the next module TX/RX ETH activity with the next module
Link2
ETH Link with the next
module
ETH No link with the next module