Multi-Tech Systems 7500 - Manual (Page 143)

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.
kWh Pulser LED
front panel
1.8 Wh pulsing
(default)
DIGITAL OUTPUTS
D3
- +
D2
- +
D1
- +
D4
- +
rear of unit
(bottom right)
kWh Pulser D4