Multi-Tech Systems 7500 Manuel D’Utilisation

ION 7500 / ION 7600 User’s Guide

Using the Onboard Digital Outputs

Chapter 5 - Features and Applications 

Page 143

Energy Pulsing with LEDs

You can customize the operation of two LEDs on the meter’s front panel: the kWh Pulse –
LED and the Alarm LED.

kWh Pulse –LED

By default, the middle green LED on the meter’s front panel is factory configured 
to be an energy pulser. Like solid-state relay output DO4, the kWh Pulser –LED is 
controlled by a Calibration Pulser module that has its Source input linked to the kW 
del+rec output of the Arithmetic module labeled “del, rec.” (This Arithmetic module 
is linked to the MU Power Meter module’s MU kW tot output.). The LED port 
outputs a pulse for every 1.8 Wh accumulated (in both 

NORMAL

 and 

TEST

 mode).

Changing the value for the Kt setup register of the controlling Calibration Pulser 
module lets you modify the pulsing rate of either channel. If you want to configure 
the LED port for a different pulsing application, you must re-link the Source input 
to the output register of a different instantaneous power quantity in one of the 
Arithmetic modules in the Demand Framework. Ensure that the quantity you 
choose originates from the MU (meter units) Power Meter module.

Alarm LED

The red (bottom) LED on the front panel of the meter is provided for custom 
applications. It can be linked to a framework to provide notification to any event. 
Possible applications include sag/swell alarming, setpoint annunciation, and tariff 
notification. Like all the other outputs on the meter, this port can be controlled by 
a Digital Output, Pulser, or Calibration Pulser module.

DIGITAL OUTPUTS