©
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.
