PSk
Solar Pump Systems
Manual for Installation, Operation, Service
1
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
v140822
Sun. Water. Life.
Contents Figures
1 Safety Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 General Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.2 Purchase Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.4 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.6 Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Solar Pumping System Components . . . . . . . . . . . . . . . . . . . . . .5
2.2 Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Installation and Wiring . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 Purchase Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.2 Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.3 Dimension and Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.5 DC Disconnect switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.6 External Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.7 Recommended Wire Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.8 Connecting the Well Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.9 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.9.1 Why Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.9.2 How to ground . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.9.3 SunSwitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Panel Layout and Instruction . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Controller Setup and Operation . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.1 Instructions for Display Status . . . . . . . . . . . . . . . . . . . . 12
4.2.2 View Running Data . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.3 View Historical Data . . . . . . . . . . . . . . . . . . . . . . . .13
4.2.4 View or modify the control parameters . . . . . . . . . . . . . . . 14
4.3 Parameter Setup Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4 Setup before First Operation . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 1: Components of a solar pumping system ............................................................5
Figure 2: Installation dimensions ...................................................................................... 6
Figure 3: Wiring diagram ................................................................................................. 7
Figure 4: Well probe ........................................................................................................ 9
Figure 5: Grounding ......................................................................................................10
Figure 6: Grounding cable mounting at controller housing ..............................................10
Figure 7: Grounding cable mounting at grounding profile rod ......................................... 10
Figure 8: Keyboard layout ..............................................................................................11
Figure 9: Diagram for display status switching ................................................................12
2
5 Fault Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1 Fault Code Description and Countermeasure . . . . . . . . . . . . . . . . . 20
5.2 Description for Other Codes . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.3 Fault Inquiry and Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6 Service and Maintenance . . . . . . . . . . . . . . . . . . . . . . 22
6.1 Routine Inspection and Maintenance . . . . . . . . . . . . . . . . . . . . . 22
6.2 Replacement of Wear Parts . . . . . . . . . . . . . . . . . . . . . . . . . . 22
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
v140822
Sun. Water. Life.
1 Safety Instruction
Safe operation of this product depends on its correct
transportation, installation, operation and maintenance.
Failure to follow these instructions can be dangerous and/
or void the warranty.
READ AND
FOLLOW ALL
INSTRUCTIONS!
When installing and using this electrical equipment, basic safety precautions should always be
followed, including the following:
WARNING – To reduce the risk of injury,
do not permit children to use this
product unless they are closely
supervised at all times.
WARNING – To reduce the risk of electric
shock, replace damaged cord immediately.
WARNING – It must be assured that all
grounding connections are properly
made and that the resistances do meet
local codes or requirements.
RETAIN THESE
INSTRUCTIONS
FOR FUTURE USE!
1.1 General Warnings
The manual contains basic instructions which
must be observed during installation, operation
and maintenance. The manual should be carefully read before installation and start-up by the
person in charge of the installation. The manual
should also be read by all other technical personnel/operators and should be available at the
installation site at all times.
Personnel Qualification and Training – All person-
nel for the operation, maintenance, inspection and
installation must be fully qualified to perform that type
of job. Responsibility, competence and the supervision
of such personnel must be strictly regulated by the user.
Should the available personnel be lacking the necessary qualification, they must be trained and instructed
accordingly. If necessary, the operator may require
the manufacturer/supplier to provide such training.
Furthermore the operator/user must make sure that the
personnel fully understands the contents of the manual.
Dangers of Ignoring the Safety Symbols – Ignor-
ing the safety directions and symbols may pose a danger
to humans as well as to the environment and the equipment itself. Non-observance may void any warranties.
Non-observance of safety directions and symbols may
for example entail the following: Failure of important
functions of the equipment/plant; failure of prescribed
methods for maintenance and repair; endangerment
of persons through electrical, mechanical and chemical
effects; danger to the environment because of leakage
of hazardous material; danger of damage to equipment
and buildings.
Safety-oriented Operation – The safety directions
contained in the manual, existing national regulations
for the prevention of accidents as well as internal
guidelines and safety-regulations for the operator and
user must be observed at all times.
General Safety Directions for the Operator/User
– If hot or cold equipment parts pose a danger then
they must be protected by the operator/user against
contact with people. Protective covers for moving
parts (e.g. couplings) must not be removed when the
equipment is running. Leaks (e.g. at the shaft seal) of
hazardous pumping media (e.g. explosive, toxic, hot
liquids) must be disposed of in such a way that any danger to personnel and the environment is removed. All
government and local regulations must be observed at
all times. Any danger to persons from electrical energy
must be excluded by using good installation practices
and working to local regulations. (For example VDE in
Germany).
Safety Directions for Maintenance, Inspection
and Assembly Work – It is the user’s responsibility
to make sure that all maintenance, inspection and assembly work is performed exclusively by authorized and
qualified experts sufficiently informed through careful
perusal of the Operating Instructions.The accident prevention regulations must be observed. All work on the
equipment should be done when it is not operational
and ideally electrically isolated. The sequence for shutting the equipment down is described in the manual
and must be strictly observed. Pumps or pump units
handling hazardous liquids must be decontaminated.
Immediately upon completion of the work, all safety and
protective equipment must be restored and activated.
Before restarting the equipment, all points contained in
chapter “Initial Start-up” must be observed.
Unauthorized Changes and Manufacturing of
Spare Parts – Any conversion or changes of the
equipment may only be undertaken after consulting
the manufacturer. Original spare parts and accessories
authorized by the manufacturer guarantee operational
safety. Using non-authorized parts may void any liability
on the part of the manufacturer.
Unauthorized Operation – The operational safety
of the equipment delivered is only guaranteed if the
equipment is used in accordance with the directions
contained in this manual. Limits stated in the data
sheets may not be exceeded under any circumstances.
Cited Standards and other Documentations –
DIN 4844 Part 1 Safety marking; Safety symbols W 8,
Supplement 13; DIN 4844 Part 1 Safety marking; Safety
symbols W 9, Supplement 14
Transportation and Intermediate Storage – Pro-
longed intermediate storage in an environment of high
humidity and fluctuating temperatures must be avoided.
Moisture and condensation may damage windings and
metal parts. Non-compliance will void any warranty.
3
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
v140822
Sun. Water. Life.
1.2 Purchase Inspection
1.4 Connection
CAUTION: Properly check the delivery
before installation. Never install the
controller when you find it damaged or
lack a component. Incomplete or
defective installation might cause
accidents.
CAUTION: The submersible motor is a
waterfilled AC machine. Always
observe the instructions delivered
together with the motor according to
its waterfilling. These instructions can
be found in the motor manual or on
the motor body itself. Ignoring these
instructions will shorten the product
lifetime and damage the motor
permanently.
1.3 Installation
CAUTION: To ensure effective cooling,
the controller must be installed
vertically with at least 10 cm space
above and below the casing.
CAUTION: When installed in an indoor
location sufficient ventilation must be
ensured by a vent or ventilator or
similar device. Do not install in a place
which is exposed to direct sunlight.
CAUTION: Do not let the drilling chips
fall into the controller fin or fan during
installation. This might affect the heat
dissipation.
1.5 Operation
WARNING: The connection of the
controller must be carried out by
qualified personnel only. Unqualified
handling might lead to shock, burn, or
death.
WARNING: Please double-check that
input power has been disconnected
before connecting the device,
otherwise electrocution or fire can be
caused.
WARNING: The earth terminal must be
reliably grounded, otherwise touching
the controller shell might lead to a
shock.
WARNING: Selection of PV module
type, motor load and controller must
be adequate, or the equipment might
get damaged.
WARNING: Grounding of this electrical
equipment is mandatory. Never run the
pump system when the ground wire is
not connected to proper ground.
Ignoring this instruction can lead to
electrocution.
WARNING: The controller should only
be connected to power after correct
wiring, or the controller might get
damaged.
CAUTION: The heat sink gets hot during
operation. Do not touch it until it has
cooled down again, or you might get
burned.
CAUTION: At altitudes of more than
1,000 m above sea level, the controller
should be derated for use. Output
current should be derated by 10% for
every 1,500 m increment of altitude.
CAUTION: Never run the pump when it
is not fully submerged in water. When
the pump is installed the correct
rotiational direction can be determined
by measuring the flow rates.
1.6 Others
Maintenance and inspection must be performed by
qualified personnel only.
Do not dismantle the controller while connected
to power. For conduct maintenance and inspection
wait at least 5 minutes after the power has been
switched off.
4
No serviceable parts inside the controller. Opening
the controller will void the warranty.
Treat the controller as industrial waste when
processing the discarded controller. It is possible
that the electrolytic capacitor will explode during
incineration and that parts of components will
produce toxic and harmful gas.
CAUTION: To avoid multiple starts of
the pump in twilight conditions, a
SunSwitch must be installed and
configured according to COMPASS
data. Multiple starts due to an
incorrectly configured SunSwitch can
lead to increased wear and damage
the pump. Such damage is excluded
from the warranty.
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
v140822
WARNING: Do not modify the
connection while the system is
connected to power, or touching any
part of it might cause electrocution.
CAUTION: Adjust partial control
parameters according to the steps
indicated by the manual before the
first operation. Do not change the
control parameters of the controller by
random, or it might damage the
equipment.
Sun. Water. Life.
2 Introduction
2.1 Solar Pumping System Components
LORENTZ solar pumping systems can be applied to all
forms of daily use, water pumping for drinking water supply
for remote villages and farms without connection to the
water grid, for agricultural use such as livestock watering,
agricultural irrigation, forestry irrigation, pond management, desert control, and industrial use such as wastewater
treatment etc. In recent years, with the promotion of the
utilization of renewable energy resources, solar pumping
systems are more and more used in municipal engineering,
city centre squares, parks, tourist sites, resorts and hotels,
and fountain systems in residential areas.
The system is composed of a PV generator, a pump and a
solar pump controller. Based on the design philosophy that
it is more efficient to store water rather than electricity,
there is no energy storing device such as storage battery in
the system. The system is prepared to be combined with a
elevated water storage, e.g. water tower or an uphill tank
installation.
The PV generator, an aggregation of PV modules connected
in series and in parallel, absorbs solar irradiation and
converts it into electrical energy, providing power for the
whole system. The pump controller controls and adjusts the
system operation and converts the DC produced by the PV
module into AC to drive the pump, and adjusts the output
frequency in real-time according to the variation of sunlight
intensity to realize the maximum power point tracking
(MPPT). The pump, driven by 3-phase AC motor, can draw
water from deep wells, rivers and lakes and pour it into
storage tanks or reservoirs, or be connected directly to the
irrigation system, fountain system, etc. According to the
actual system demand and installation condition, different
types of pumps such as centrifugal pump, axial flow pump,
mixed flow pump or deep well pump can be used.
2.2 Product Features
LORENTZ PSk AC has the following features:
• maximum power point tracking (MPPT) with fast
response speed and stable operation
• digital control for fully automatic operation, data
storage and protective functions
• intelligent power module (IPM) for the main circuit
• LED display operating panel
• low water probe sensor
• protection level IP41
• ambient temperature for using: -10 to +50˚C.
CAUTION: Make sure to select the
appropriate controller model according
to PV module and motor load.
5
Figure 1: Components of a solar pumping system
2.3 Technical Data
Model Pump motor:
PS9k 7.5 380 – 440 10 800 500 – 600 18 0 – 60
PS15k 11 380 – 440 15 800 500 – 600 24 0 – 60
PS21k 15 380 – 440 21 800 500 – 600 30 0 – 60
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
v140822
rated power
[kW] [V] [kWp] [V] [V] [A] [Hz]
Pump motor:
rated voltage
Solar input
power
Max. DC input
voltage
MPP voltage output current frequency
Sun. Water. Life.
3 Installation and Wiring
H
3.1 Purchase Inspection
If any abnormity is found, contact your distributor. Once
you get the product, please check according to the following table.
3.2 Packing List
# Item QTY
1 PSk controller 1 unit
2 Operation manual 1 copy
3 Plug for the positive terminal of the
PV modules
4 Plug for the negative terminal of the
PV modules
5 Motor plug 1 pc
6 sensor plug 1 pc
*) for PS15k and PS21k: 4
2 pcs*
2 pcs*
Inspection item Inspection method
Consistency with ordered product Inspect the identification plate
Damage or exfoliation phenomenon Inspect whole appearance
Completeness of main machine and accessories Check according to the packing list
Looseness of fastening parts such as screws If necessary, inspect with screwdriver
3.3 Dimension and Weight
D
d
CAUTION: The PSk Controllers must be
mounted to a wall. Ensure that the
mounting backplane can support the
weight of the controller. Controller
must be protected from rain, moisture
and animals. Sufficient ventilation
must be provided.
H1
D1
W1
W
Figure 2: Installation dimensions
Model Dimension [mm] Weight [kg]
all models 250 310 200 235 295 167 7 8.0
W H D W1 H1 D1 d
6
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
v140822
Sun. Water. Life.
3.4 Wiring
Figure 3: Wiring diagram
Socket Terminal Connection
P connected to positive terminal of PV module
DC input
N connected to negative terminal of PV module
M-1 connected to protective ground wire
M-2 connected to U phase of the motor
AC output
M-3 connected to V phase of the motor
3.5 DC Disconnect switch
The pump system must be equipped with proper sized DC
disconnect switch. The switch must be installed between
solar generator and controller. It must meet the following
requirements:
minimum 800V DC
continuous current rating according to maximum cur-
rent of pump controller or higher
the switch must be rated for DC current, NOT AC
A PV disconnect switch, matching all requirements above,
can be purchased from LORENTZ.
The use of a properly sized disconnect switch is an
important safety measure and obligatory for a professional
installation of a solar pumping system.
WARNING – No disconnect switches
must be installed in power wires
between motor and pump controller.
Connecting the motor wire to the
switched-on controller might
irreparably damage it. Such damages
are excluded from the warranty.
M-4 connected to W phase of the motor
S-1 ground
S-8 float switch 1, controlled by PR 15
water level sensor input
grounding G connect to proper ground
Prompt: Float switch 1 controlled by PR 15 and
float switch 2 controlled by PR 16 can be combined
to a dual float switch.
Prompt: Well probe sensor 1 controlled by PR 17
and well probe sensor 2 controlled by PR 18 can be
combined to a dual switch well probe.
Prompt: Please refer to chapter 4.3 Parameter for
further information on parameter settings.
S-7 float switch 2, controlled by PR 16
S-6 well probe sensor 1, controlled by PR 17
S-5 well probe sensor 2, controlled by PR 18
7
CAUTION: Ensure the exact locations of
the DC input “P” and “N” sockets.
CAUTION: Ensure the wiring of AC
output is based on the marks of the
sockets.
CAUTION: To ensure proper operation
of the system, select the wire size
according to the following recommended principle.
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
v140822
Sun. Water. Life.
3.6 External Sockets
Socket Wires Connection
DC Power IN , positive (+) plug
NBZH PV-ZH202 compatible
DC Power IN , negative (–) plug
NBZH PV-ZH202 compatible
−
Motor Plug
one-strand, black
one-strand, black
four wires
connect to positive pole (+) terminal
of the PV generator
connect to negative pole (–) terminal
of the PV generator
yellow/green wire (M-1) connected to protective ground wire
red wire (M-2) connected to U phase of the motor
yellow wire (M-3) connected to V phase of the motor
8
Sensor Plug
white sensor cable
black sensor cable
blue wire (M-4) connected to W phase of the motor
red wire (S-8)
yellow wire (S-7) float switch connection wire 2 (optional)
black wire (S-1)
red wire (S-6)
yellow wire (S-5) well probe connection wire 2 (optional)
black wire (S-1)
For use with LORENTZ float switch: Connect to blue wire
of the float switch and set parameter “PR15” to value
“6”
Common ground for float switches
Connect to black wire of the LORENTZ float switch
For use with LORENTZ well probe sensor: Connect to the
white wire of the sensor and set parameter “PR17” to
value “6”
Common ground for well probe sensors
Connect blue wire of the LORENTZ well probe sensor
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
v140822
Sun. Water. Life.
3.7 Recommended Wire Sizes
Model Controller to module
(P, N)
Earth wire
(PE)
[mm2] [mm2] [mm2] [mm2]
PS9k 4 2
PS15k 4 2
PS21k 4 3.5
3.8 Connecting the Well Probe
The well probe contains a mechanical float with a magnet
inside. When the probe is submerged, the float rises, and
the magnet actuates a switch. The switch closes (makes
contact) to indicate the presence of water. If the water level
drops below the probe, the float drops, and the switch
opens (breaks contact): The controller will stop the pump.
When the water level recovers and switch closes again, the
controller will delay the restart for 10 minutes. This gives
time for the water level to recover. To force a quick restart,
turn the controller off, then on again. The switch is sealed,
so the contacts never touch the water.
Fixation: The probe is packed with two cable ties. For a
pump that is to be installed in a vertical position, clamp
it to the pipe just above the pump outlet, as shown in
the photo. Splice the two probe wires using the splice kit
components that are packed with the probe. The assembly
procedure is the same as the main pump splice.
Controller to motor
(U, V, W)
4 for max. 130 m
4 for max. 90 m or AWG #10 for
max. 400 ft
6 for max. 140 m
4 for max. 60 m or AWG #10 for
max. 280 ft
6 for max. 90 m
Controller to water
level sensor (S)
1.00–1.50
1.00–1.50
1.00–1.50
Potential problems with the low-water probe in
surface water: The probe has a moving float. It is highly
resistant to deposits and debris. However, it may stick
under some extreme conditions, especially from algae or
water creatures (snails, etc.) that may be present in surface
water.
Possible solutions are:
• Hang the probe independently of the pump and pipe
(clamped to a weight, but not to the drop pipe). This
way, it can be pulled up for inspection or cleaning
without the need to pull up the pump. (This may not
be feasible if the well casing is smaller than 6 in)
• Pull the probe out periodically (with the pump, if necessary) for testing and inspection. The pump should
stop at the moment the probe leaves the water.
PROMPT: Ambient temperature for the wire sizes as
recommended above is ≤50°C.
PROMPT: High-power wall-mounting machine
model uses multi-channel DC input. Wire size for
DC of each channel must be selected and used as
recommended in the table above.
WARNING – Always connect all DC
input sockets of the controller to
balance the load on the plugs! If
necessary use a combiner box to
distribute the power. Otherwise the
controller will get damaged.
WARNING: Running completely dry will
damage the pump and void the
warranty. The purpose of the probe
system is to sense the loss of water
and turn the pump off before it can run dry.
CAUTION: The low-water probe must
be positioned vertically, within 10°. If
the pump is NOT to be installed
vertically, find an alternative way to
mount or suspend the probe, so that it is higher
than the pump, and in a vertical position.
9
• Wrap the probe in a protective screen (fibreglass
window screen, for example). Substitute a different
type of float switch. You can use any switch that
makes contact on rise (normally open).
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
v140822
Figure 4: Well probe
Sun. Water. Life.
3.9 Grounding
Before starting to work at the electrical system, by all
means make sure that all components are disconnected
from the power source. Only switch on the system when
you have finished all work.
PS15k2
PumpController
3.9.1 Why Grounding
It is mandatory to protect the users from potentially fatal
electrical shocks. It also protects against electric charging
or a short circuit inside the device. This is accomplished
through clamping, bolting or other effective mechanical
means to provide an effective grounding path to the earth
to ensure safe operation at all time.
The grounding is also important to the system for lightning
protection. In general it is meant for indirect lightning
strikes and induced electrical potentials during operation of
the pump system.
3.9.2 How to ground
The grounding cable must be a copper cable with a cross
section of at least 16 mm
2
. For connection with the con-
troller use cable lugs of sufficient size!
CAUTION: The wiring has to be done by
qualified staff only. Make sure that the
grounding cable has reliable connection to the ground.
This is a possible example with a grounding rod. The
grounding profile rod should be located about 4 – 5 m from
the controller. The cable must not carry any mechanical
loads. The rod must be completely burried in the ground. In
any case you need to refer to local standards and requirements.
Figure 5: Grounding
bolt for ground connection
at controller housing
grounding rod
grounding cable
Picture may differ to product
washer
cable
tooth washer
washer
nut
10
3.9.3 SunSwitch
CAUTION: To avoid multiple starts of
the pump in twilight conditions, a
Figure 6: Grounding cable mounting at controller housing
SunSwitch must be installed and
configured according to COMPASS
data. Multiple starts due to an
incorrectly configured SunSwitch can
lead to increased wear and damage
the pump. Such damage is excluded
from the warranty.
Figure 7: Grounding cable mounting at grounding profile rod
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
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v140822
nut
washer
tooth washer
cable
cable washer
bolt
Sun. Water. Life.
4 Operation
4.1 Panel Layout and Instruction
Indicator light/key Name Function
[RUN] running indicator light GREEN ON: controller is running
[STOP] shutdown indicator light RED ON: controller is shut down
[FAULT] fault indicator light RED ON: system fault
[NORMAL] normal indicator light GREEN ON: system normal
[WELL DRY/TANK FULL] well/tank indicator light RED ON: float switch or well probe status is abnormal
RUN
STOP
DATA
MODE
run key starting control for the controller
stop key shutdown control for the controller
data inquiry key enter or quit from displaying historical data
mode switch key
switch between different content when viewing data
switch the digit that is being edited when editing data
indicator LEDs
display
keys
Figure 8: Keyboard layout
11
PROG
ENTER
+
increase/decrease the parameter number or its value when
editing the parameters
increment key
decrement key
programming key enter or quit from editing the control parameters
enter key
reset key press the both keys to reset in the protection status
change the historical date upward/downward or display the
content of the historical data in turns when the historical data
is displayed
increase/decrease the output frequency or display current running data upward by turns when the data status is displayed
during running
confirm the edited content
confirm and save the edited parameter value
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4.2 Controller Setup and Operation
4.2.1 Instructions for Display Status
There are three kinds of status for operating panel display:
1) running data display, 2) control parameter display, 3)
historical data display. The default status is the display of
running data. Press the [PROG] key to enter the status of
control parameter display, and press the key again to return
to the default status. Press [DATA] key to enter the status
of historical data display, and press the [DATA] key again
to return to the default status.
4.2.2 View Running Data
Operation Data displayed Display (e.g.)
initial status: current running data
Figure 9: Diagram for display status switching
MODE
MODE
MODE
MODE
MODE
MODE
output frequency of controller = 50.00 Hz
input voltage of controller = 340 V
12
input current of controller = 5.00 A
input power of controller = 1.50 kW
output current of controller = 6.0 A
time = 12.30 h
MODE
MODE
MODE
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v140822
syncronous rotation speed = 500 min
controller temperature = 37° C
water level sensor status = normal water level
-1
Sun. Water. Life.
4.2.3 View Historical Data
Operation Data displayed Display (e.g.)
initial status: non-historical data display
DATA
MODE
ENTER
MODE
enter the data inquiry interface
display: current date
select the object to be modified
(day, month, year)
selected digit flickers
modify the date to be inquired = 12th February
confirm date to be inquired = year 2008
historical data:
accumulated generated energy of the day
= 31st January
= 9.99 kWh
PROMPT: To view the historical data, a valid date
must be entered first; confirm by pressing [ENTER].
After that it is possible to scroll though the data by
pressing [MODE]. Press [DATA] again to go back to
the Running Data Display.
MODE
MODE
MODE
MODE
MODE
historical data:
maximum power point voltage of the day
historical data:
maximum power of the day
historical data:
starting time of the day
historical data:
shutdown time of the day
historical data:
running time of the day
13
= 320 V
= 2.20 kW
= 5.10 h
= 17.40 h
= 12.5 h
DATA
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
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v140822
quit from displaying the historical data:
display: current running data
= 50 Hz
Sun. Water. Life.
4.2.4 View or modify the control parameters
Operation Operation, data displayed Display (e.g.)
initial status: non-control parameter display
PROG
ENTER
enter the parameter modification interface
display: parameter PR0
select the parameter to be viewed and edited
display: parameter number
confirm the parameter to be viewed or edited
display: parameter value
edit parameter value = 25
PROMPT: While the controller is in operation, the
parameter settings can only be viewed. The control
parameter cannot be modified until the controller
is stopped.
= PR 0
= PR 9
= 30
ENTER
PROG
confirm the editing and save the new value
display: next parameter number
quit from the parameter display mode
display: current running data
= PR 10
14
= 50 Hz
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4.3 Parameter Setup Table
Parameter Name Range Description Factory value
parameter can be read and written
0
other parameter values cannot be modified until this parameter is set to 0
1 all other parameters (PR 1 to PR 29) are read-only
PR 0 parameter set mode 0 to 3
PR 1* maximum power point voltage 0 to PR 2 real maximum power point voltage of the whole PV generator 530 V
PR 2* open circuit voltage PR 1+1 to 1,000
PR 3* rated voltage 1 to 1,000 rated voltage of the motor load 380 V
Factory Restore – Use Factory Restore to recover the factory default values for ALL
2
parameters (PR 0 to PR 29). Hereafter the controller has to be reset by pressing “UP”
and “DOWN” at the same time.
After setting the parameters from PR 6 to PR 10 to the actual date and time, you
3
must set PR 0 to value “3”. The controller then stores the actual date and time to the
internal clock and PR 0 is automaticly changed back to value “0”.
real open circuit voltage of the whole PV generator
Interlock function between PR 1 and PR 2: If necessary, the modification of PR 2 has
to be coordinated with the modified value of PR 1
1
650 V
PR 4* rated current 0.1 to 300 rated current of the motor load (associated with the rated voltage from PR 3)
PR 5 start up delay 1 to 150 start up delay time after power up or shut down (in seconds) 30 s
PR 6 year 2,000 to 2,999 year (must be set to actual date)
PR 7 month 1 to 12 month (must be set to actual date)
PR 8 day 1 to 31 month (must be set to actual date)
PR 9 hour 0 to 23 hour (must be set to actual date)
PR 10 minute 0 to 59 minute (must be set to actual date)
Manual START and STOP: 1) Press the [RUN] key to start the pump, while the initial
0
frequency is determined by PR 12. 2) Press the [UP] and [DOWN] keys to modify the
operating frequency. Only for testing purpose
PR 11* resources of frequency instruction 0 to 2
PR 12 reference frequency 0 to PR 13 initial frequency when PR11 is 0 20 Hz
Fully automatic operation: Pump starts automatically, when sufficient power is
1
present. The operating frequency is adjusted accoring to the sunlight intensity (MPP
tracking)
Manual start of automatic operation: Press the [RUN] key to start the pump, the
2
operating frequency is adjusted accoring to the sunlight intensity (MPP tracking)
according to
pump model
1
15
PR 13* maximum operating frequency 0.01 to 60
PR 14 stopping frequency 0 to 60 pump stopps, when the output frequency drops below the set value 20 Hz
PR 15
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setting for float switch 1
(white cable, red wire, S-8)
0 to 9
to protect the motor load, maximum operating frequency must be in line with rated frequency
of the motor
0 no float switch (sensor deactivated)
6 float switch normally closed
7 float switch normally open
8 float switch normally open (for dual switch mode with float switch 2)
9 float switch normally closed (for dual switch mode with float switch 2)
others Do not set other values, it may cause the inverter to work abnormally
For “Dual switch mode”, both float switches must be set to value “8” or “9”
Sun. Water. Life.
50 Hz
0
PR 16
PR 17
PR 18
setting for float switch 2
(white cable, yellow wire, S-7)
setting for well probe 1
(black cable, red wire, S-6)
setting for well probe 2
(black cable, yellow wire, S-5)
0 to 9
0 to 9
0 to 9
0 no float switch (sensor deactivated)
6 float switch normally closed
7 float switch normally open
8 float switch normally open (for dual switch mode with float switch 1)
9 float switch normally closed (for dual switch mode with float switch 1)
others Do not set other values, it may cause the inverter to work abnormally
For “Dual switch mode”, both float switches must be set to value “8” or “9”
0 no well probe (sensor deactivated)
6 well probe normally closed
7 well probe normally open
8 well probe normally open (for dual switch mode with well probe 2)
9 well probe normally closed (for dual switch mode with well probe 2)
others Do not set other values, it may cause the inverter to work abnormally
For "Dual switch mode", both well probes must be set to value "8" or "9"
0 no well probe (sensor deactivated)
6 well probe normally closed
7 well probe normally open
8 well probe normally open (for dual switch mode with well probe 1)
9 well probe normally closed (for dual switch mode with well probe 1)
others Do not set other values, it may cause the inverter to work abnormally
For "Dual switch mode", both well probes must be set to value "8" or "9"
0
0
0
PR 19 total generated energy read-only 0
PR 20 to
PR 24
PR 25 rated motor power [kW] 0.1 to 300.00
PR 26 number of pole pairs 1 to 10 Pole number is used to calculate the synchronous velocity. 1
PR 27
PR 28 loss load protection 0 to 1
PR 29
*) After modification of parameters marked with *, the
next operation cannot be performed until the controller has
been reset.
fault type record 1 to 5 read-only see chapter 4 the operating code explanation no
When loss load protection is working the parameter must be set correctly, otherwise it may
cause to work abnormally.
startup delay time after abnormal
water level of well probe 1 or 2
startup delay time after abnormal
water level of float switch 1 or 2
1 to 30,000
1 to 30,000
After the water level has been abnormal or idle load protection has been running, the controller
will restart after this period of time (in seconds). While countdown is still higher than 999
seconds, the displayed digits flicker, delay time displayed remains at 999.
0 unavailable
1 available (delay time of idle load protection set at PR 27)
When idle load protection parameter is set to 1 and if the actual output frequency
is higher than the frequency set at PR 14, controller activate idle load protection.
After the water level has been abnormal or idle load protection has been running, the controller
will restart after this period of time (in seconds). While countdown is still higher than 999
seconds, the displayed digits flicker, delay time displayed remains at 999
PROMPT: Record is not made because of the
under-voltage fault of input voltage when the sun
irradiation is too low.
16
according to
pump model
600
0
600
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4.4 Setup before First Operation
To ensure the efficient, reliable and stable operation of
the solar pumping system, trained personnel has to make
a setup for the control parameters to adjust the controller
according to the present operating conditions.
For first operation of the pump system, at least the
mentioned steps below must be performed. Please follow
all instructions strictly. You can find additional informations
for the setup precedures in the previous chapters of this
manual.
Wiring must be changed by qualified
personnel only!
Never perform any changes on the
wiring without diconnecting the
controller from the power supply!
Make sure that all components are
safe to work on by additionaly testing
them with a multimeter!
CAUTION: For the first operation test,
the pump must already be installed
properly in the well! Up to this point,
all electrical connections must be
finished and secured for operation!
CAUTION: Do not modify the control
parameters of the controller randomly,
otherwise it can cause disfunctions,
inefficient operation or damage to the
system components.
Prompt: The fan is temperature-controlled. When
the temperature is higher than 55° C, the fan starts.
When the device has cooled down to less than 45
degree, it stops.
# Set up operation Description Method
1 switch on the controller Connect the DC power to the pump controller by switch-
2 set the control parameter to read/write This allows the operator to change the parameters Set the PR 0 value to 0.
3 date and time This step is necessary to store the actual date and time to the
internal clock of the PSk Controller. After confirming the new
date and time by setting PR 0 to value “3”, the internal clock
is synchronized with the new date and PR 0 is automaticly
changed back to the value “0”. The controller jumps to the next
parameter (PR 1).
4 PV module parameters This step is necessary to indicate the controller the dimen-
sions of the connected solar generator. Take care that the data
origins from realistic working conditions. You can refer to your
LORENTZ COMPASS sizing for proper data and compare to the
factory values given in the parameter setup table.
Another way to determine correct values is to measure the real
open circuit voltage “Voc” (PR 2) of the PV generator with a
multimeter on a sunny day.
The real MPP voltage (PR 1) can be calculated approximately by
multiplicating the real Voc with 0.8: Vmp = Voc × 0.8
5 water level sensor settings This step has to be done to configure the water sensors, that
have been connected to the controller.
In the chapter “Wiring” and “Parameters” you can find detailed
instructions about how to connect a well probe and float switch
to the controller.
ing the DC Circuit Breaker to position “ON” “
Make sure, that the mechanical and electrical installation of the whole pump system is complete,
safe and without any errors!
• Set PR 6 to PR 10 (year, month, day, hour, minute)
according to actual date.
• Set the PR 0 parameter value to 3.
• Set PR 1 (MPP voltage) and PR 2 (Open circuit
voltage) according to the REAL values of your PV
generator
under real working conditions, NOT the
datasheet values.
• Note: Take care of the interlock function between
PR 1 and PR 2 as described in the parameter setup
table.
Open circuit voltage (PR 2) must always be higher
than the MPP voltage (PR 1).
• If a float switch has been connected to the sensor
terminals (S-8) and/or (S-7), set the parameters
PR15 and/or PR 16 according to the parameter
setup table.
• If a well probe has been connected to the sensor
terminals (S-6) and/or (S-5), set the parameters
PR17 and/or PR 18 according to the parameter
setup table.
• If no sensor is connected set the related parameter
to “0” (sensor disabled).
17
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6 the maximum operating frequency The maximum operating frequency has to be set correctly in
7 confirm the motor wiring
(correct rotating direction)
8 minimum operating frequency Depending on the static head the pump system has to over-
order not to overload the motor or the controller. Please refer to
your COMPASS sizing report to determine the maximum value
for PR 13.
This value can be found in the data table “system characteristic” in row “frequency”. Please use the value from the right
column named “Max./STC”
A centrifugal pump only produces its designed flow rate, when
it is rotating in the correct direction (counter-clockwise, viewed
from the top). To find out, which wiring of the motor phases
matches the correct direction while the pump is installed, the
flow rate of both rotating directions must be compared.
For successful testing, there must be sufficient power present
from the PV generator. Thus, it is advisable to choose a sunny
day for this test.
The PSk controller must be configured to “Manual Start
and Stop” (PR 11 = ”0”); a medium rotation speed must be
configured, to ensure a sufficient flow rate for comparison
(PR 12 = ”30.00”).
In some cases, e.g. when the pump operates at very high head,
a higher operating frequency has to be chosen for testing. Also
the time span, until any water reaches the outlet of the pipe,
will be longer.
To change the rotating direction of the motor, disconnect the
controller from the solar power supply by switching the DC
circuit breaker to position “OFF”. Wait until the capacitor inside
the controller has discharged (numeric display extinguishes) and
disconnect the motor plug. Now interchange the wiring of any
two phases of the three motor phases to reverse the rotating
direction. Reconnect the motor plug and switch on the power
supply again.
For both rotating directions, observe the flow rate at the pipe
outlet and choose the motor wiring with the bigger flow rate
for permanent operation. The difference will be clearly visible
without measuring.
come, it needs a certain minimum operating frequency to produce any water yield at the outlet. To protect the pump system
from running without pumping any water to the surface, the
minimum operating frequency has to be figured out by testing.
The minimum operating frequnecy is determined by the parameter “PR 14” (“stopping frequency”). If the solar power input is
getting less and the operating frequency drops below the value
stored in “PR 14”, the controller will shut down the pump. The
same case occurs in the morning; the pump will only be operated when it can exceed the minimum operation speed.
The controller should still be configured to “Manual Start
and Stop” from the previous step. To figure out the minimum
frequency, set the reference frequency “PR 12” to value “10”.
This value ensures, that the pump is operating at a low speed;
not producing any flow.
Press the [RUN] key to start the pump; it should run now at
10.00 Hz. Observe the effluent from the pump outlet and increase the frequency slowly by pressing [UP]. Press [DOWN] to
decrease the frequency if necessary. Increase the frequency until
water reaches the surface, or respectively a desired minimum
flow rate is reached.
The controller is showing the current operating frequency on the
display. Write down this value of miminum operating frequency
(f0) and stop the pump by pressing [STOP].
Set the the parameter for the shutdown frequency (PR 14) according to the determined minimum operating frequency f0.
The pump will now only run, when there is sufficient power to
exceed the minimum operating frequency.
Set PR13 (rated frequency) according to the pump motor
specifications; observe the maximum operating frequency given in the COMPASS sizing of your application.
• Set parameter “PR 11” to value “0”
• Set parameter “PR 12” to value “30.00”
• Press the [RUN] key to start the pump and
observe the water yield from the outlet
• Press the [STOP] key to stop the pump
• Disconnect the controller from power supply, i.e.
switch off the circuit breaker.
• Reverse the rotating direction by interchanging
the wiring of two of the three motor phases
• Connect the DC power again
• Press the [RUN] key to start the pump and observe the water yield from the outlet again.
• Press the [STOP] key to stop the pump
• Disconnect the controller from power supply and
choose the motor wiring with the bigger water
yield according to the observations.
18
• Set PR 12 to 10.00.
• Press [RUN] key and observe the effluent of the
water outlet
• If there is no effluent from the outlet, press [UP]
key to slowly increase the output frequency
• If there is effluent from the pump, record the
operating frequency f0.
• Set PR 14 to f0 (shutdown frequency).
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9 operating mode of the controller The final step is to choose an operating mode that matches
the demand of the pumping application. The controller can be
operated in three diffrent modes:
• PR 11 = “0” : Manual Start and Stop - The pump ist
started and stopped by pressing [RUN] and [STOP]; the
operating frequency is adjusted manually by pressing
[UP] + [DOWN]
• PR 11 = “1”: The pump will start automatically, when
sufficient power is coming from the solar generator to
exceed the minimum frequency stored in PR 14. The pump
is operated at the highest possible frequency according to the available power from the PV generator (MPP
tracking).
• PR 11 = “2”: Same behaviour like for PR 11 = “1”, but the
pump is not starting automatically; it has to be started
manually by pressing [RUN]. After that, the pump is operated at the highest possible frequency according to the
available power from the PV generator (MPP tracking).
11 set control parameter to read-only This step is necessary to protect the program parameters from
accidentally changes after final setup. (writing protection)
Set PR11 (operating mode) according to the application
demand.
0 Manual START and STOP: 1) Press [RUN] key
to operate, the initial frequency value is determined by PR12. 2) Then set the output frequency
by pressing [UP] or [DOWN] key.
1 Fully automatic operation: Pump starts
automatically, when sufficient power is present.
The operating frequency is adjusted accoring to
the sunlight intensity (MPP tracking)
2 Manual start of automatic operation: Press
the [RUN] key to start the pump, the operating
frequency is adjusted accoring to the sunlight
intensity (MPP tracking)
Set PR0 to 1 before Controller start up.
19
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5 Fault Diagnosis
5.1 Fault Code Description and Countermeasure
LORENTZ PSk series of solar pumping Controller have various protection routines to ensure the controller and other
parts of the installation are not damaged when a fault
occurs. As a general protection measure the driving signal
output of the motor is stopped (breakaway) immediately
while restart is forbidden for a certain period of time.
The controller will automatically switch to the fault display
when an error occurs. The fault code will be displayed in
the last two digits and flash. If the first digit displays “P”,
this means protection measures have been taken and the
controller is reset. Disconntect controller from power and
wait until the capacitators have fully discharged. This will
be indicated by the display switching off. Then reconnect.
Alternatively, press the [RESET] key to reset. If the fault
still persists after resetting, please contact the manufacturer and make relevant processing.
After the fault or protection to be reset is eliminated, the
controller will conduct automatically a time-delayed restart.
At this time the fault number will appear in the first and
second digit of the numeric display. The last several digits
will display the countdown of the restart, when the countdown is”0”, fault display unit will disap-pear automatically
and operating status data will be displayed.
Error Code Error Possible Reason Countermeasures
overvoltage too high input voltage inspect PV module voltage
undervoltage
overcurrent
overload too large load
overcurrent of the module
too low input voltage
sunlight too weak
too large pump load
low PV module voltage
too long motor wiring
shorted output or grounding
module damaged
inspect PV module voltage
check if pump and motor are
assembled correctly and no
dirt has accumulated inside
pump
change low-power pump load
inspect PV module voltage
shorten the cable between
controller and motor
reduce the highest operating
frequency
inspect the connection
turn to manufacturer for
service
overtemperature of the
module
AC CT fault device or circuit damaged
DC CT fault device or circuit damaged
data record fault device or circuit damaged device or circuit damaged
communication fault device or circuit damaged
idle load
air duct blocked
too high ambient temperature
indicates that pump has
been running when water
source is low, pump wire has
been disconnected or pump
does not match inverter
clear the air duct or improve
the ventilation condition
contact manufacturer for
service
contact manufacturer for
service
reset, press “MODE” and
“down” at the same time to
load the default settings
device or circuit damaged
inspect water level, wire
connection and whether the
power of pump matches the
capacity of the inverter
20
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5.2 Description for Other Codes
5.3 Fault Inquiry and Reset
Error Code Description
parameter initialization
important parameter modification
controller type H: 380 V series, 11.0: rated power 11.0 kW
abnormal float switch 1
abnormal float switch 2
abnormal well probe sensor 1
regular notification after performing a factory restore.
Confirm the message by pressing [UP] and [DOWN]
for controller reset
regular notification after parameter modification.
Confirm the message by pressing [UP] and [DOWN]
for controller reset
The pump will be restarted, after the controller has
detected the switch as "normal" again. This time
depends on the float switch startup latency (PR 29)
plus the general pump start delay (PR 5).
The pump will be restarted, after the controller has
detected the switch as “normal” again. This time
depends on the float switch startup latency (PR 29)
plus the general pump start delay (PR 5).
The pump will be restarted, after the controller has
detected the switch as "normal" again. This time depends on the startup latency (PR 27) plus the general
pump start delay (PR 5).
This series of Controllers record the fault codes of the latest
5 times. Searching this information will help find the fault
cause. Fault information is stored together with the control
parameter, code numbers are P20 to P24. Please refer to
the keyboard operation method to search and find out
relevant information.
When the Controller fault occurs, by pressing [UP] and
[DOWN] keys simultaneously or cutting off the power supply to restore normal operation.
CAUTION: Completely check up on the
fault cause and eliminate it before
resetting. If it can not be reset or goes
wrong after resetting, check up on the
cause, because continuous resetting will damage
the Controller.
CAUTION: Delay 5 minutes to reset
during overload and overheat
protection.
The pump will be restarted, after the controller has
abnormal well probe sensor 2
abnormal coordination
of float switch 1 and 2
abnormal coordination
of well probe sensor 1 and 2
starting time delay countdown of the restart: 30 seconds
PV voltage is too low to start pump;
or
too weak sunlight intensity; or
PR 2 parameter is not suitable
detected the switch as “normal” again. This time
depends on the well probe startup latency (PR 27)
plus the general pump start delay (PR 5)
The pump will be restarted, after the controller has
detected both switches as “normal” again. This time
depends on the well probe startup latency (PR 27)
plus the general pump start delay (PR 5)
The pump will be restarted, after the controller has
detected both switches as "normal" again. This time
depends on the startup latency (PR 27) plus the
general pump start delay (PR 5).
When PV voltage is up to the start value, pump will
start automatically.
Modify PR 2 parameter (open circuit voltage) according to the PV array. (Use the measured value, not the
rated value given in the datasheet.)
21
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
v140822
Sun. Water. Life.
6 Service and Maintenance
6.1 Routine Inspection and Maintenance
Affected by ambient temperature, humidity, dust, vibration
and internal device aging of the controller, problems might
occur during operation. To make the controller run stably, a
periodic inspection must be performed every year.
Requirement of Inspection and Maintenance
1. The inspection must be performed by professional
technical personnel.
2. Before working on the controller, always cut off the
power supply and wait, until the display turns off.
3. Avoid leaving any metal components in the
controller, or else they might cause damage to the
equipment.
4. An electric insulation test has been made on the controller before it has left factory. A withstand-voltage
test is not necessary.
5. It is forbidden to use the megohmmeter to test in the
control circuit.
6.2 Replacement of Wear Parts
Filter Capacitor
Pulsating current of the main circuit will influence the
performance of the aluminum electrolytic filter capacitor, of
which the degree will depend on the ambient temperature and application condition. The Controller used under
normal condition should replace its electrolytic capacitor
every 10 years. When the filter capacitor’s electrolyte is
leaking, safety valve bursting out or the capacitor main
body expanding, replace it immediately.
Cooling Fan
Cooling fan’s service life is about 15.000 hours. If the fan
appears abnormal noise or produces vibration, replace it
immediately.
6. When conducting insulation test on the motor, you
have to disconnect the connection between motor
and controller.
Main Points for Inspection and Maintenance
Please use the controller under environment recommended
by this manual. Inspect and maintain as per the following
table.
Inspect frequency
regular
√
√
√
√
√
Inspection item Inspection content Judgment standard
running environment
cooling system
controller body
motor
input and output parameter
1. temperature, humidity
2. dust, gas
1. installation environment
2. radiator
1. vibration, temperature rise
2. noise
3. lead, terminal
1. vibration, temperature rise
2. noise
1. input voltage
2. output current
22
1. temperature <50 °C
2. humidity < 90 %, no dew condensation, no peculiar smell,
flammable, explosive gas
1. excellent ventilation in installation environment
2. radiator air duct not blocked
1. stable vibration, normal temperature of the shell
2. no abnormal noise and peculiar smell
3. fastening screws not loose
1. steady running and normal tempera-ture
2. no abnormal and uneven noise
1. input voltage in the specified scope
2. output current under the rated value
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
v140822
Sun. Water. Life.
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