INTRODUCTION
CONNECTIONS AND START-UP
DO NOT CONNECT THE RS485 OR RS232 PORTS TO
UNSUPPORTED INVERTERS OR COMMUNICATIONS
DEVICES
Each Lithium Iron Phosphate (LFP) battery has a built-in Battery Management
System (BMS) which controls the charge and discharge voltages, currents,
temperature, state of charge (SOC), state of health (SOH) and safety of the
battery.
It includes a RS485 communication port and DIP switches for parallel operation
and communication with the Rentech Oryx inverter, as well as a RS232 port for
factory and support testing. Communications protocols are custom and can not
be used with other Inverters or RS485/RS232 communication devices unless
approved by Rentech.
Please refer to the User manual for details.
Ensure that you have the correct battery voltage for the charger/inverter.
Do not use a 24V battery on a 48V system or vice versa.
With the charger/inverter off, measure the input impedance on the battery
terminals to ensure there is no short circuit.
Connect the battery positive and negative terminals to the battery terminals
of the charger/inverter using the correct cable size and battery fuses/
breakers ratings. For a single battery, the address DIP switches must be set
to: Off-Off-Off-Off – “0000”.
For multiple batteries in parallel up to 15 maximum, follow the instructions in
the User Manual.
1.
2.
3.
4.
LFP batteries are shipped from factory in a partially charged state and with the
batteries switched off. A high impedance voltage of ~ 8Vdc to 18Vdc on the
terminals are normal and an indication that the battery’s BMS is on, even though
the battery is off.
!
DO NOT CONNECT RENTECH 24V LFP BATTERIES
IN SERIES TO FORM A 48V SYSTEM
!
