CIRCUTOR QNA500 series - Manual (Page 24)

POWER QUALITY ANALYZER QNA500 8IO
QNA500 8IO Instruction manual 24 / 111
6.1.3.- INPUT-OUTPUT CENTRALIZER MODULE (M-8IO)
M-8IO is the input-output module of the MULTIFIT system. This module has 8 digital inputs and 8
digital outputs (relay or transistor, in accordance with the module) that can be used for various
functions.
Digital inputs:
• Pulse counter
• Status change control
Digital outputs:
• Pulse transfer
• Alarms
• Remote control
M-8IO has a series of LEDs that provide information about the correct connections of the analyzer and
its correct operation.
LED Power off Power on Flashing
POW No power Powered External power supply (1 s)
Battery power supply (200 ms)
ST1 No errors Memory error
ST2 No errors Update in progress
Voltage
measurement
Earth-leakage
current
Measurement
Current
measurement