CIRCUTOR QNA500 series - Manual (Page 44)

POWER QUALITY ANALYZER QNA500 8IO
QNA500 8IO Instruction manual 44 / 111
9.2.- Digital inputs
M-8iO centralizer module has 8 digital inputs. These inputs are designed to provide 2 main functions:
• Pulse counting: can be wired up to 8 meters (or other devices) send to send pulses
proportional to measures of physical quantities and M-8iO module will count the number of
pulses and group them in a registration period as a load profile of pulses received.
• Registration status changes (On / Off): This option allows to record the date / time that an
input is activated and / or deactivated. In the case of circuit breakers or other elements of a
plant want to be aware when they are fired, only one auxiliary contact wiring to the
corresponding input, this option would be recorded.
The digital inputs are capable of detecting pulses of minimum width of 15μs.
The configuration of the digital inputs and monitoring can be done via the web server of the module.
NOTES:
• For more information on configuring the module using the M-8iO web server, see the section
'Web Server'.
• For more technical information on the digital inputs, see the section on 'Technical
Characteristics'.
9.3.- Digital outputs
There are 2 models with 8 digital outputs and the difference relays or opto-mosfet. M-8iO centralizer
module has 8 opto-MOSFETs, while the module M-8iOR has 8 relays.
These outputs are designed to provide 4 main functions:
• Pulse proportional to energy (M-8iO): This option allows you to program one or more outputs
to generate pulses proportional to the energy measured by the module QNA500.
• Alarms: This option allows you to open/close a digital output depending on an electric variable
measured by the analyzer QNA500, or an alarm conditional on a change of state of a digital
input module or another module itself M-8iO.
• Remote Control: Allows you to open or close a digital output at the user, without being subject
to any pre-programmed condition.
• Time operations: this option allows to open/close outputs depending on time conditions. As an
example it’s possible to connect some loads at one specific time and to disconnect them at
some other specific time.
The digital output configuration and monitoring can be done via the web server of the module.