Input Wiring For Battery-Based Systems - Lorentz PS Série Manuel D'installation Et De Fonctionnement

30 Controller Installation

7.7.1.5 Input Wiring for Battery-based Systems

CAUTION – The PS4000 pump system can
not be operated from batteries.
Install a jumper wire between terminals 6 and 7 to set
the controller to battery mode when operating a PS150 to
PS1800 controller. This will deactivate the MPP-Tracking
function and activate the Low Voltage Disconnect (LVD).
Connect the PS controller directly to the battery and NOT to
the load terminals of the charger as the terminals may not
be rated for the starting load current of the pump. The PS
controller has a low voltage disconnect function to protect
the battery from being deeply discharged.
Some charge controllers monitor the capacity of the battery
and regulate the charging accordingly. This method does not
work when the PS controller is connected to the battery. In
order to provide correct charging the charger should be set
to voltage orientated regulation. This may require a jumper
to be set in the charger. Check the manuals of the charger
manufacturer.
Short circuit protection: Install a fuse or circuit breaker
near the power source. Use a 30 A circuit breaker or a time
delay (slow blow) fuse.
Low-voltage disconnect function: Lead-acid batteries
can be permanently damaged by over-discharge when
the voltage falls below a critical point. To prevent this, the
PS battery system controller will turn off at low voltage,
and turn back on only after the battery has recovered
significantly.
Table 7: Set points for low voltage disconnect
Controller Voltage
12 VDC
PS150
24 VDC
PS600 48 VDC
PS1200 96 VDC
PS1800 96 VDC
OFF ON
11 VDC 12 VDC
22 VDC 24 VDC
44 VDC 48 VDC
88 VDC 96 VDC
88 VDC 96 VDC