The modes of operation will change occasionally during the day based on PV array output and battery system state of
charge. The MX60 operating mode, (and sometimes other messages), are displayed in the bottom righthand corner of
the main status screen (figure 6).
Sleeping PV output voltage or charger current is below minimum operating levels. This may also appear briefly
during the day when the MX60 is transitioning between states because of other conditions.
Zzzz... After nite time (3 hours of sleeping) the MX60 will display Zzzz... until the next wakeup.
Wakeup As the PV open circuit (Voc) rises above the battery system voltage, the MX60 prepares to deliver
power to the batteries. During this period, the MX is calculating PWM duty cycles, turning on
power supply voltages in the proper sequences, and making internal calibrations. During the wake up
period, the MX60 closes its relays and produces power. At dawn and dusk this may happen many times
until there is (or is not) enough power from the PV array to keep going. Upon closing the relays, if it is
determined that it is just still too early (or too late), the MX will display Lolite for a few seconds and then
display Snoozing for 5 minutes. This is meant to reduce energy and unnecessary powering of the MX.
MPPT The MX60 is in Maximum Power Point Tracking mode and is trying to get the battery voltage to reach
the Absorb, Float or EQ voltage setpoint in the Bulk, Float or EQ charge stage, (respectfuly.)
Absorbing The MX60 is in the Absorb (constant voltage) charge stage, keeping the battery voltage at the Absorb
voltage setpoint, (modified by battery temperature compensation if installed), and the ChgT counter in
the miscellaneous screen is counting down towards zero from however long the MX60 was in Bulk. If
the system cannot keep the battery voltage at the Absorb voltage setpoint, then the MX60 will return to
the Bulk charge stage, display MPPT, and the ChgT counter will start counting up again.
Absorb There is an external DC source keeping the battery at or above the Absorb setpoint.
Bat Full The MX60 is waiting for the battery voltage to fall to just below the Float voltage setpoint before
continuing with the Float stage. This may also be displayed because of external DC charging sources.
Float The MX60 is in the Float charge stage and is keeping the battery at the Float voltage setpoint.
If the system cannot keep up with the Float voltage setpoint, (eg. DC loads are on), then the MX60 will
return to MPPTing and try it’s best at again reaching the Float setpoint target voltage.
New Voc The MX60 is acquiring a new open circuit panel voltage periodically if in U-Pick MPPT mode, or if trans-
ferring back to MPPT mode from Absorb or Float in either U-Pick or Auto-Sweep MPPT mode.
Re-cal There are certain abnormal conditions that can confuse the current measuring method in the MX. When
and if this happens, the MX will temporarily stop and re-calibrate. This may sometimes happen because
of negative current, ie., current coming out of the PV terminals instead of into the PV terminals, or a
tripped PV breaker.
Bat Tmp Err The temperature sensor is damaged. The MX60 will stop operating unless the sensor is removed or
replaced with a new sensor.
Equalizing The equalization process has been manually started. The AUX output will be disabled in all but the
manual On mode. Once the voltage reaches the Equalize setpoint, the ChgT timer will begin to count
up the Equalize time in minutes. Once the amount of time has been reached, the Equalization process
will automatically end. The DC loads should be turned off and the battery should be charged enough so
that the MX60 can reach the EQ voltage setpoint, otherwise the MX60 cannot continue the EQ process.
Sweeping In Auto-Sweep mode, the MX60 is either sweeping the panel voltage from Voc to near battery voltage
during wakeup, or is doing a periodic dithering mini-sweep to stay on the max power point during MPPT.
Below 5 amps of battery current, this will flash briefly and the MX60 will operate at the Park PV voltage.
This message may also appear if the MX60 has reached the max battery current setting and is raising
the PV operating voltage to keep the battery current at the max current setting.
Low Light / If Snoozing is enabled, this may occur in early morning or late afternoon/evening. (See Wakeup above)
Snoozing
Unloaded The battery terminals were abruptly unloaded. May happen if the battery breaker trips while MPPTing.
8
To Next Page
Loading...
