Xantrex Technology C35, C40, C60 owner manual Load Controller

Introduction

Important: If PV arrays are used with diversion control, it may be necessary to install diodes to prevent night-time back-feed. If in doubt, contact or consult with your local renewable energy expert.

Important: If using multiple RE sources, use diodes/isolation to prevent backfeed.

CAUTION: Damage to Batteries

Current draw of the diversion load is very important. Problems may arise from operating with a load that is too small or too large. A diversion load that is too small will not be able to absorb all the excess power from the current source once the batteries are full allowing batteries to overcharge.

Diversion loads in excess of the controller’s rating are capable of absorbing more power than the C-Series controller is designed to handle, resulting in an over-current shut down. During this time, the unit will not regulate electrical flow in the system and battery damage may result.

Load Controller

The C-Series controller can operate as a Low Voltage Disconnect (LVD) for DC loads to prevent over-discharge to batteries during periods of poor charging or excessive loads. The C-Series controller uses the user-adjustable setpoints to determine when to disconnect or reconnect loads depending on battery voltage.

When used as a DC load controller, the settings of the LVR and LVD are controlled by two rotary potentiometers (also called pots) on the circuit board.

The scale on the adjustment potentiometers differ from the scale used for other functions. A decal with the appropriate adjustment scale is included with the C-Series. To apply the decal, gently pull off the knobs of the potentiometers and place this decal on the circuit board. After the decal is in place, replace the knobs. The EQ jumper determines manual

10 975-0004-01-02 Rev D