a.
Battery type (LiFePo4 and NiCd/NiMH charging profiles are currently implemented. You can use
the charger with Lead Acid battery by ‘faking’ the CV and # of cells settings below to match your
float charge voltage)
b.
CV cutoff (only for LiFePo4, can ignore this parameter for Nickel-based batteries). You can enter
the number from 000 to 399. The actual CV voltage used will be your entered number divided by
100. So, to set CV to 3.5V (EMW recommended setup for CALB batteries), enter 350.
c.
Number of cells – from 000 to 399
d.
Capacity of cells – from 000 to 399. This parameter used to determine CV cutoff current (set in
the code to 0.05C – standard for TS and CALB batteries)
e.
Calibration of the sensors:
i.
In our 12kW units, there are separate steps for Zero-point Voltage Sensor Calibration and
Voltage Sensitivity Calibration. These are not yet implemented in 25kW units.
ii.
IMPORTANT: please ignore ‘Short the output’ prompt if the charger asks for it –
shorting the output of the charger while powered from AC mains will result in AC
mains short and will likely damage the charger.
iii.
The charger will come pre-calibrated – if you need to change the calibration, you will
need to do that in firmware. Contact
for instructions
10.
Once you are done with the setup, the charger will enter the runtime countdown (10 sec). If this is the first
time you are running the charger, press any button to program output power. You will enter into the
runtime configuration menu. Press left (normally red) button to cycle through menu options (‘run’, ‘pwr’,
‘timer’), confirm selections with right (normally green/black) button:
a.
Enter input current. The charger will not allow you to exceed its ratings (20-25kW depending on
charger version) so entering anything beyond ~100A for the input current will result in charger
using 100A limit. WARNING: ensure proper fusing / breaker on your mains power line.
b.
Enter output current. Maximum possible output current is limited to 50-70A (depending on
charger version), and your settings will be capped to that maximum.
c.
Once power level (if needed) & timeout (if needed) are set, navigate to ‘Run’ menu item and
confirm. The charger will display the settings of the charging step for 5 sec and will start. It will
stop automatically when the charging is complete, displaying AH delivered. WARNING: to
achieve max rated power, ensure adequate access to [reasonably] cool air to the charger’s fans (i.e.
do not mount charger near your motor or in open sunlight, etc). Upon completion, the charger will
set End-of-Charge wire on BMS dongle to TTL “LOW”.
d.
You can terminate the charge at any time by setting BMS input to TTL “LOW”. You can also
terminate the charge by disconnecting input power. EMW chargers are protected from both AC
mains and battery disconnection during charging
11.
Finally, you can now (as of V12 firmware after September 20, 2013) control the charger remotely via a
Serial TTL line.
