Outback Power Systems 80 user manual

GT Mode In a system with an OutBack FX Grid-Tie Series Inverter(s), HUB and MATE, the FLEXmax

80 will display GT Mode if and only if the inverter is in Sell mode and the FLEXmax 80 is in Bulk (MPPT BULK) or Float (MPPT FLOAT) cycle. This is also a good indicator for establishing proper Grid-Tie mode communication between the FX G-Series Inverter(s) and FLEXmax 80. GT must be selected in the MPPT Mode Advanced menu in order to be viewed.

High VOC This indicates the PV array’s open circuit voltage is too high for the controller to safely operate. This should only occur with systems using 72 VDC nominal PV arrays in very cold temperatures (below 5° F / -15° C). The controller will automatically restart operation once the PV array’s open circuit voltage falls to a safe level (145 VDC or lower). The amount of time required before starting operation is dependent on the module type, ambient temperature, and the amount of sunlight directly on the PV array. Normally, the controller starts in the morning within a few minutes of the PV array being in direct sunlight.

Low Light / Snoozing During the initial tracking (see Wakeup and Tracking), if it is determined to

be too late (or too early) in the day, the FLEXmax 80 will display Low Light for a few seconds and then display Snoozing for 5 minutes (default). This reduces energy usage and unnecessary powering of the FLEXmax 80. This message is also displayed in extremely cloudy weather.

MPPT Bulk The FLEXmax 80 is in Maximum Power Point Tracking mode trying to regulate the battery voltage towards the Absorb voltage set point. If the FLEXmax 80 transitioned from Absorbing to MPPT Bulk, the Charge Timer (ChgT) counter may start counting down towards zero minutes or until the Absorb target is met. See page 47 for more information.

MPPT Float The FLEXmax 80 is in Maximum Power Point Tracking mode trying to regulate the battery voltage towards the Float voltage set point. Note: Charge Timer (ChgT) is inactive in the Float state.

MPPT EQ The equalization cycle has started and the FLEXmax 80 is trying to regulate at the Equalization voltage set point. EQ is not battery temperature compensated. During an equalization cycle, EQ 0:00 will be displayed along with the EQ time in hours and minutes. The AC/DC loads should be turned off/minimized and the battery charged so the FLEXmax 80 can quickly reach theEQ voltage set point. Otherwise, the FLEXmax 80 may not reach or maintain the EQ cycle.

New VOC The FLEXmax 80 is acquiring a new open circuit panel voltage (VOC).

OvrCurrent If more than 6A flowing from the battery or more than 100A flowing to the battery. To reinitiate power production, press ”RSTRT” in the “Misc” menu.

Over Temp (Very rare) Either the FLEXmax 80 is too hot or its internal temperature sensor is shorted. If this message appears, carefully check if the FLEXmax 80’s heat sink is extremely hot. The heat generated by the FLEXmax 80, and therefore its losses, is proportional to input voltage times output current. To help control its operating temperature, avoid installing the FLEXmax 80 in direct sunlight

Re-Cal There are certain abnormal conditions that can confuse the current measuring method in the FLEXmax 80. When and if one happens, the FLEXmax 80 will temporarily stop and re-calibrate. This may happen because of negative current, i.e., current flowing from the battery, or a tripped PV breaker. A new VOC is also acquired during a Re-Cal.

63