Installation Manual

© 2014 Magnum Energy, Inc.
Page 119
Using a PT Controller: Operation/Monitoring
Status Description
Absorb Charging This charging stage begins after the absorb voltage has been reached.
Absorb charging provides the batteries with a constant voltage and re-
duces the DC charging current to maintain the absorb voltage setting.
Bulk Charging This is the initial stage of charging. While bulk charging, the charger
supplies the battery with controlled constant current. The charger will
remain in bulk charge until the absorption charge voltage is achieved.
Equalizing Battery equalization is in process and the PT controller is trying to main-
tain the battery at the equalize target voltage.
Float Charging The third charging stage occurs at the end of the Absorb charge stage.
The charge voltage is reduced to the fl oat charge voltage and kept fully
charged—unless the battery type is CC/CV.
When the battery type is CC/CV the controller stops charging, but is ac-
tively monitoring the battery voltage. If the battery voltage drops to the
Set Recharge Volts setting, another Constant Current (Bulk)/Constant
Voltage (Absorb) charge cycle begins.
Sleeping The PV controller is not charging the battery because it has either been
turned off or has determined that there is no sun.
The PT controller can be manually turned off by selecting Charger Off
from the 04A PT CHG Ctrl menu.
No sun is based on low PV voltage and no effective power (i.e., nighttime).
UnknownStatus ## This status message displays when the inverter/charger has sent a fault
code that cannot be determined by the ME-ARC remote.
10.2.4 PT Charge Controller Remote Status Messages
A PT status may be an operational, relay, fault, or power status message. The METER: 07A PT
Status menu displays the PT’s current operating status. This menu is important when determining
if the PT is working correctly, or for troubleshooting a PT installation.
10.2.4.1 PT Remote Operational Statuses
Refer to Table 10-2 below for a brief description of the possible PT charge controller operational
statuses that may display (depending on your remote).
Table 10-2, PT Controller Remote Operational Statuses
10.2.4.2 PT Remote Relay Statuses
The following “Relay” statuses indicate whether the Aux Relay is “engaged” or “disengaged”.
Table 10-3, PT Remote Relay Statuses
Status Description
Disengage This status indicates that the PT controller is no longer energizing the Aux Relay.
When the Aux Relay status shows “Disengage”, the COM to N.O. contact is open,
and the COM to N.C. contact is closed.
Engage This status indicates that the PT controller has energized the Aux Relay. When
the Aux Relay status shows “Engage”, the COM to N.O. contact is closed, and the
COM to N.C. contact is open.
Info: The Aux Relay can be activated manually; or activated automatically based on
battery voltage or if a PT controller fault occurs. Refer to the CTRL: 04B PT Aux Relay
Control menu to see the selection that is used to activate the Aux Relay.