Multi-Tech Systems 7500, 7600 manual Setpoint Configuration, Fine Tuning Over Condition Monitoring

ION 7500 / ION 7600 User’s GuideSetpoint Configuration

Setpoint Configuration

	The Relative Setpoint module provides extensive control, secondary protection,
	and analysis capabilities by allowing you to initiate an action in response to a
	specific condition. It is particularly useful for performing actions based on
	differences between a value (e.g. kW on phase A) relative to a reference value (e.g.
	kW demand for all three phases). You can use this module’s outputs for demand
	control of equipment or any other applications requiring setpoint activity relative
	to a varying value.
	The Relative Setpoint modules monitor the following for "over" conditions: phase
	current, kW demand, and voltage unbalance.
Module	Label	Description
Relative Setpoint 1	Over KW sd	When active, this annunciates when the total kW SWDemand exceeds a specified amount.
Relative Setpoint 2	Over I a	When active, this annunciates when the current on phase A exceeds a specified amount.
Relative Setpoint 3	Over I b	When active, this annunciates when the current on phase B exceeds a specified amount.
Relative Setpoint 4	Over I c	When active, this annunciates when the current on phase C exceeds a specified amount.
Relative Setpoint 5	Over V unbal	When active, this annunciates if the voltage unbalance exceeds a specified percentage.
Relative Setpoint 6	Over I 4	When active, this annunciates when I 4 exceeds a specified amount.
Relative Setpoint 7	Over I 5	When active, this annunciates when I 5 exceeds a specified amount.

Relative Setpoint Module Settings

There is no need to change any of the Relative Setpoint modules’ setup registers for normal operation of the meter.

Fine Tuning Over Condition Monitoring

If you want to fine-tune over condition monitoring, the only setup registers you should change are SusUntlON and SusUntlOFF.

SusUntlON determines how long the modules wait after an over condition is detected before reporting it. This gives the monitored value a short period to correct itself before the event is registered with the module so that very brief over conditions are ignored. Similarly, SusUntlOFF is the amount of time a normal value must be present before the module considers normal operation to be restored. Both SusUntlON and SusUntlOFF values are entered in seconds (the default value for both is 30 seconds).

Refer to the online ION Programmer’s Reference for more information about the

Relative Setpoint module.

Chapter 3 - Default Meter Functionality Page 61