v110801
6
Jmp2
Jmp3
Jmp1
SYSTEM
PUMP ON
OVERLOAD
WELL DRY
TANK FULL
BATTERY LOW IF FLASHES
1 2 3 4 5 6 7
low-wate
r
sensor
pr
obe
s
connect
for battery
mode
remote
float switch
NO
Co
m
NC
Max. 50V
Do not connect
this terminal
www.
LORENTZ
.de
T1
T2
T3
T4
T5
T7
V8
Sun. Water.
Life.
BERNT LORENTZ GmbH & Co. KG
Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29,
www.lorentz.de
Errors excepted and possible alterations without prior notice.
Solar direct system Voltage from panels will read 22 – 45 V
when disconnected (open circuit). Use the left power termi-
nals to connect the solar array with the controller.
The jumper wire on terminal 6 and 7 must be taken out for
solar direct mode.
Remote Tank Float Switch
Connect float switch to ter-
minals 4-5 of the pump controller when it breaks contact
on rise, to turn the pump OFF. Otherwise use terminals 3-4
for opposite function.
Solar Tracking
Use stranded wire for flexibility. Secure
the wires to tracker with plenty of tape. Leave a good slack
loop to allow free motion of tracker.
4.3 System Wiring for 12 V – 24 V Systems in PV-direct Operation
4.4 Jumper Setting for PS150C Mode
Before start-up check that jumper Jmp2
is set to PS150C mode, cf. sketch on the
right.
4.5 High-run Mode
In order to set the battery high-run mode set the jumper
Jmp1 as shown in above picture. This will increase the Low
Voltage Disconnect (LVD) settings to 12.3/24.6 V and the
re-start voltages to 13.3/26.6 V to allow pumping only
when the batteries receives charging current from the solar
array. The lifetime of the battery will be increased consi-
derably as cycling is avoided.
4.6 Power Control for PV-direct Operation
PS150 pumps require different current depending on speed
and lift. When low light conditions are present, the PV
array cannot supply the required current. If you dont use
a controller the voltage will drop to nearly zero, and the
pump will “stall” (like a truck trying to start in 4th gear).
The pump controller, also called linear current booster (LCB)
including Maximum Power Point Tracking (MPPT) acts like
a “gear box” in your car. This device will match the power
source to the load by transforming the voltage down while
increasing the current delivered to the motor (like an auto-
matic transmission).
1 PV module 12 V or
2 PV modules 12 V in series
Jumper Jmp1
Set to activate High-run Mode
Jumper Jmp2
Make sure the two left pins are
connected for PS150C mode
low water sensor
