5
➢ CRITICAL BATTERY: LED shines twice each 15 seconds. In section “No
communication”.
o It occurs when the battery level is below 5 %.
o The behavior of the device is identical to the “Sleep” state, but the correct
opening/closing operation of the solenoid is not assured because the
power supply of the device is low.
➢ DISABLED: LED does not shine. In section “No communication”.
o It occurs when the battery level is empty, 0 %, or if the device is damaged.
o The device receives deferred instructions, but it does not run programs
or record data. The commands are stored in the cloud until the device
switches to the “Awake” state.
6. Power modes
Then we will detail power modes in which and ATLAS can be set. When we refer to a
specific time or time zone, it will apply to the time zone that you have chosen when
creating the farm (e.g. Spain time zone (GMT+1)).
Transitions from “Asleep” to “Awake” state will be performed only if the device is in an
area with proper LTE signal.
NOTE: If the battery level drops below 5 %, the device enters the PSM mode
automatically, and it will not return to the power mode it was programmed until it
reaches 15 %. A small hysteresis is programmed to prevent accelerated battery
operating life drain.
1. PSM (Power Save Mode)
Normally, the device is in the “Sleep” state. It switches to the “Awake” state temporary,
twice a day (see Figure 1) in order to load the new commands and then go back to the
“Sleep” state. To avoid saturating the LTE cells, transitions are performed randomly
within the time slots indicated in Figure 1.
In this mode, the device is able to perform up to 2 registrations (water meter, battery
and signal) per day and update the schedule twice a day.
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