Differences

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--- mppt_pv_short_relay_reset [2023-01-11 10:59] – [Reset latching relay] tabreu
+++ mppt_pv_short_relay_reset [2023-04-18 09:34] (current) – [Reset latching relay] tabreu
@@ Line 11: / Line 11: @@
 ==== When to perform this procedure? ====
-Connecting a Solar Charger that is configured for 12V to a 48V battery, and then connecting the PV Array, can cause the protection to "mistrigger". Meaning that the charger sees an over voltage, and as such assumes that there is an internal fault and then engages the latching protection.
+Applying a higher battery voltage than configured in the Solar Charger (eg. 48V battery to a 12, 24 or 36V configured charger), and then connecting the PV Array, can cause the protection to “mistrigger”. Meaning that the charger sees an over voltage, and as such assumes that there is an internal fault and then engages the latching protection.
 Recovering from such mistriggers is the purpose of the here documented reset feature.
@@ Line 18: / Line 18: @@
 ==== Reset latching relay ====
 To recover from such failure, the below reset procedure must be followed.
-  - Power the solar charger through its battery terminals with a 12V battery or bench power supply set to 12V.
+  - Disconnect the PV Input terminals.
-  - Leave the PV Input terminals disconnected.
+  - Power the solar charger through its battery terminals with a **12V** battery or bench power supply set to **12V**. Note that if the voltage at the solar charger battery terminals is higher than 15V, reset button is disabled in VictronConnect so the reset procedure won't be possible.
   - Make sure no error 80 to 83 is active. If it is active, power cycle the unit.
   - Open VictronConnect and navigate to the Product settings menu. There the PV Short reset feature is shown.{{ :drafts:mppt_pv_short_relay_reset.png?600 |}} Note that the feature only shows when (a) the connected units features the protection, ie. 250/100 VE.Can model, HQ2150 and later; (b) requires the battery voltage to be between 10 and 15V; (c ) requires VictronConnect v.580 or later; (d) requires firmware version v3.12 or later to be installed on the Solar Charger and (e) no error 80 to 83 is active.