Horsefly
Solar Wizard
Yes, it's very easy to program. You just bring up the app on your phone, connect it via BLE (low energy Bluetooth), and configure it. There are several categories of disconnects that can be programmed. In this case, it's the low voltage disconnect. For my testing, I simply put in a disconnect at 26.0V, and a reconnect at 26.2V. You can also specify the delay time in milliseconds, where the disconnect will only happen if the voltage gets down to equal or below the disconnect voltage for the specified amount of time. To reconnect, the voltage has to be at or above the reconnect voltage for the same amount of time. Anyway, it works great.Did you get a chance to look at/test the powermon? I'm looking to buy a few more Low Voltage Disconnects. I need one for my 12VDC dehumidfier, and another for my battery heater. I can hold off for a few more months before ordering.
Was it easy to program? Capable of very close voltages between cutout and cut in? Did it keep the settings after a power outage?
Thanks,
Carl
I don't think you care, but it also has high voltage disconnect and an over current disconnect. You can also have up to 16 timers set to turn the relay on or off at certain times, certain days of the week, etc.
The non-timer disconnects are part of the device configuration, which is saved in non-volatile memory. So that info is saved if the power to the Pmon-5s is disconnected. The stuff that is lost when it loses power is the date and time (so the timer functions either won't work or won't work as intended) and any passwords you've set up for the app. That last part seems a bit crazy: They have password protection to keep people out, but if they just power-cycle the thing the password protection is removed.
The funny thing was that I wanted this device primarily for two things: Coulomb counting for an accurate SoC of the battery, and data logging. The thing can log voltage, current, SoC, and temperature for up to three years. It was after I got it that I discovered how handy the low-voltage disconnect would be the function you described. As it turns out I'm finding problems with the data logging and Coulomb counting. Oh well.