Connect the RS485 cables from A to B, A to B, etc.
Don’t “daisy chain” the battery cables: Connect each battery’s cables to a
and – busbar or terminal.
Address DIP switch settings:
Master battery : 1000
Slave 1
: 0100
Slave 2
: 1100
Slave 3
: 0010
Etc.
(Note it is binary in reverse (mirror image)).
a)
b)
c)
i)
ii)
iii)
iv)
v)
vi)
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Double check that the polarities are connected correctly and all nuts/screws
properly tightened.
Make sure the battery cables are not connected to the inverter’s PV terminals
or the PV cables connected to the inverter’s battery terminals.
With the battery fuse or breaker not connected and the loads on the inverter
disconnected, start-up the battery by pressing down and holding the RESET
button for approximately 3 seconds until the LEDs come on, then release the
RESET button.
The SOC LEDs on the battery will indicate the %SOC and the green RUN
LED will flicker at ~1Hz (1 second). If the red ALM (alarm) LED flickers at
~2Hz (0.5 seconds), it indicates a low SOC warning and NOT that the battery
is faulty. Measure the battery voltage with a voltmeter to determine the actual
voltage.
If the red LED is permanently on, the BMS has detected a health or safety
event and disabled the battery – Contact your supplier or Rentech.
Close the battery fuse/breaker to connect the battery to the charger/inverter.
Switch-on the charger/inverter while checking the battery current with a
clamp-meter to verify it is only the standby power rating of the charger/
inverter.
Program the charger/inverter for the correct battery type (Lithium/User
defined), charge voltage and current and end of discharge (EOD)/low voltage
disconnect (LVD) settings for the specific battery from the table below.
NB:
For inverters,
ENSURE
that the inverter low voltage disconnect value is
set at least 1V (preferably 2V) higher than the battery EOD voltage to ensure
the battery’s BMS does not switch-off the battery under load conditions
before the inverter does. This will enable you to start-up the battery when the
AC power has returned or the PV power is sufficient to re-start the inverter
before connecting loads again.
NB:
Before connecting loads, first charge the battery to full capacity to
prevent EOD/LVD disconnect under load conditions due to insufficiently
charged battery.
