F3 Series Charger Manual
12
CHART 4.2
Graph of Factory-Set Output, Alarm and Shutdown Voltages
Degrees C
1.75
1.85
2.15
2.25
2.35
2.45
2.55
VRLA Float
VRLA Boost
Flooded Float
Flooded Boost
HV Alm VRLA
HV Shtdn VRLA
HV Alm Flooded
HV Shtdn Flooded
Low DC Alarm
4.3
Forced Load Sharing
Chargers can be set up for forced load sharing when used in parallel with units of the same current
rating. Forced load sharing causes the chargers to share the load from light loading to full load except
when either charger is in BOOST mode (whether activated manually or via the AUTO BOOST
system) or if either charger is operating in current limit. Chargers will share the load 10% of
each other.
To set up, ensure that the DC output leads from each charger are identical in length and wire gauge.
Install a Load Share Cable (supplied by SENS or assembled by user) between terminals on both
control boards where labeled “PAR”.
To assemble a Load Share Cable:
1. Cut desired length of single wire (18 or 22 wire AWG).
2. Connect a 10K
Ω, 2 Watts or more, resistor
inline
with signal wire. Connect resistor to wire
using a Butt Connector or twist wires together and cover with Heat - shrink.
