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©2000 Xantrex Technology Inc.
Operating Modes
The C-Series controller can operate as either a photovoltaic charge
controller, a diversion controller, or a DC load controller. The controller cannot
operate in more than one mode at the same time. If several modes are required
in a system, a dedicated controller must be used for each mode.
Photovoltaic Charge Control
When this mode is selected, the status LED will indicate either blinking
green or solid green. It will alternate red/green when in equalization mode.
Diversion Control Mode
When this mode is selected, the status LED will indicate either blinking
green or solid green.
DC Load Control Mode
When this mode is selected, the status LED will typically indicate blinking
red or solid red as the controller turns the DC loads OFF when battery
voltage is low.
Photovoltaic Charge Control Mode
Depending on the model, the controller can regulate up to 60 amps of
continuous photovoltaic (PV) array current at 12 or 24 volts (C60), or 12, 24 or
48 volts DC (C40) for charging batteries. This rating includes the NEC required
deratings. When used in this mode, ensure that the operating mode jumper is
on the charge control pins. To enable the Photovoltaic Charge Control Mode,
see
Configuring the CSeries
in the installation section of this manual.
If the PV arrays output increases above the rated amp level due to
reflection or edge of cloud effect, the controller will continue to operate until the
heatsink reaches a maximum safe operating temperature. This will take several
minutes to occur depending upon the ambient temperature involved. When the
heatsink reaches the maximum safe temperature, the controller will reduce the
current, cooling the transistors and the heatsink.
If the current from the PV array reaches 85 amps, the controller will turn off
to protect the circuitry. In the event of a shutdown, the controller automatically
resets itself after 10 minutes (if overcurrent condition is no longer present).
The C-Series charge controller rapidly cycles the current source on-and-off
to control the charging current and voltage of the battery. This occurs in both the
charge control mode and the diversion control mode. The amount of time the
current source is connected to the battery is varied to control the average current
flow. This is often referred to as pulse width modulation (PWM) and allows the
current to be tapered, rather than coarsely turning the current off and on as with
relay type PV array charge controllers.
1.0 INTRODUCTION
2
Summary of Contents for Trace C35
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