Chapter 4 PAS Application Software General Meter Setup
Branch Feeder Monitor 136_Installation Operation and Manual 49
4.6.5 Using Alarm/Control Setpoints
BFM136 has an embedded logical controller that runs different actions in response to user-defined internal
and external events. Unlike a PLC, the BFM136 uses a simplified programming technique based on
setpoints that allows the user to program a required action based on a measured analog value or on a
time. The controller provides up to 4 setpoints for each submeter.
This setup allows configuring setpoints for each individual submeter. It can be read and changed via the
corresponding submeter’s address.
To program the setpoints for a submeter, select General Setup from the Meter Setup menu, and then click
on the Control/Alarm Setpoints tab.
The following table describes the setpoint options.
The trigger parameter that is used as an argument in the logical expression
The threshold (in primary units) at which the conditional expression would be
evaluated to true. Not applicable for time triggers.
The threshold (in primary units) at which the conditional expression would be
evaluated to false. Defines the hysteresis for analog triggers. Not applicable for
digital triggers.
The time delay before operation when the operate conditions are fulfilled
The time delay before release when the release conditions are fulfilled
The action performed when the setpoint expression is evaluated to true (the
setpoint is in operated state)
Using Numeric Triggers
For numeric (analog) triggers, a setpoint allows you to specify two thresholds for each trigger to provide
hysteresis (dead band) for setpoint operations. The operate limit defines the operating threshold, and the
second release limit defines the release threshold for the trigger. If you do not want to use hysteresis for
the trigger, set the release limit to the same as the operate limit.
Using Time Triggers
If you want the setpoint actions to be synchronized with the clock, for example, to provide recording interval
data, use the minute time interval trigger that generates periodic events synchronized with the device
clock.
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