Set Up Device Scan Control - enphase Envoy Installation And Operation Manual

Set Up Device Scan Control

The "controlled" device scan differs from other Envoy device scans in that it allows control over the scan
period, scanning method, and the number of devices. When first installed, the Envoy initiates an eight-
hour scan. This initial scan is the only scan needed for most systems.
NOTE: At sites with more than 100 microinverters, Enphase recommends using a controlled
device scan and specifying the total number of devices to be discovered. This speeds up the
discovery process. See the following procedure for details.
Run a controlled scan only to detect new or previously undetected microinverters.
To run a controlled scan:
1. From the Administration menu, choose Device Scan Control.
The Device Scan Control screen appears.
2. Enter a Scan Duration in days:hours:minutes (e.g., 0:00:60 to indicate zero days, zero
hours, and 60 minutes). The scan duration depends on many factors, such as number of
devices to be detected and quality of power line communication. You may want to start with a
one-hour scan and increase the duration as needed.
3. Although optional, it is best practice to enter a value for Total Devices. Enter a value in this
field. The Envoy stops scanning once it has detected the given number of devices.
NOTE: The Total Devices option can be used in conjunction with the Priority Duration option
to help discover any last few microinverters.
4. Enter a Priority Duration (optional) in days:hours:minutes (e.g., 0:00:20 to indicate zero days,
zero hours, and 20 minutes). If you enter a value in this field, the Envoy makes scanning the sole
activity for the period specified.
NOTE: The Priority Duration option should only be used in limited situations, e.g., at large
sites or sites experiencing problems discovering devices with the normal scan.
5. Click Start Scan to complete this task. The LCD screen displays the following, where "nnnn"
represents the number of microinverters (devices) detected.
44
Priority Scan is
Active. Devs: nnnn
 2014 Enphase Energy Inc.
Envoy Installation and Operation
141-00014 Rev 04