SATEC EM920 Operation Manual - Manual (Page 133)

Chapter 5 Configuring the EM920
Configuring Communication Protocols
EM920 Power Quality and Revenue Meter 133
• Less than (under) - a new event is generated when
the point value drops below the specified threshold,
and then when it returns above the threshold plus a
predefined return hysteresis – applicable for AI
objects.
Hysteresis for the return threshold is 0.05 Hz for
frequency and 2% of the operating threshold for all
other points.
4. Check the “Ev On” box for the points you wish to be
included into event poll reports.
5. In the “Ev Class” box, select the event poll class for
the change event points.
6. Repeat these steps for all points you want to be
monitored for events.
7. Click Send to download your setup to the device.