Nastec SUND Service manual

SUND
Installation, use and maintenance manual
V 2.1
16/06/2022
EN

Copyright © Nastec srl
The information contained in this document may be changed without notice
Nastec srl, Via della Tecnica, 8, 36048, Barbarano Mossano, Vicenza, Italy, Tel. [phone], Fax [phone], [email protected],
nastec.eu

Table of Contents
1. Introduction ........................................................................................................................................ 5
1.1. Purpose of the manual .............................................................................................................. 5
1.2. Product overview ...................................................................................................................... 5
1.3. Nastec NSC solar calculator ..................................................................................................... 6
2. Safety ................................................................................................................................................ 6
2.1. Symbols .................................................................................................................................. 6
2.2. Qualified personnel .................................................................................................................. 7
2.3. Safety warnings ....................................................................................................................... 7
2.4. Acoustic emission .................................................................................................................... 9
2.5. Certifications ............................................................................................................................ 9
3. Maintenance ....................................................................................................................................... 9
3.1. Maintenance ............................................................................................................................ 9
3.2. Warranty .................................................................................................................................. 9
3.3. Product registration ................................................................................................................ 10
3.4. Spare parts ............................................................................................................................ 10
3.5. Disassembly and repair .......................................................................................................... 10
3.6. Disposal ................................................................................................................................ 11
4. Transport and storage ....................................................................................................................... 11
4.1. Transport ............................................................................................................................... 11
4.2. Inspection on delivery ............................................................................................................. 11
4.3. Handling ................................................................................................................................ 11
4.4. Storage ................................................................................................................................. 12
5. Technical features ............................................................................................................................. 12
5.1. Technical Data ....................................................................................................................... 12
5.2. Performance .......................................................................................................................... 13
5.3. Dimensions and weight ........................................................................................................... 14
5.4. Cables entry .......................................................................................................................... 14
6. Mechanical installation ...................................................................................................................... 14
6.1. Installation environment .......................................................................................................... 14
6.2. Cooling .................................................................................................................................. 15
6.3. Hydraulic connections ............................................................................................................ 15
6.4. SUND priming ........................................................................................................................ 15
7. Electrical installation .......................................................................................................................... 15
7.1. Grounding .............................................................................................................................. 15
7.2. Protection devices .................................................................................................................. 15
7.3. Connecting cables .................................................................................................................. 16
7.3.1. Power cable ................................................................................................................ 16
7.3.2. Control cables ............................................................................................................. 16
7.4. Electromagnetic Compatibility (EMC) ....................................................................................... 16
7.5. Electrical connections ............................................................................................................. 16
7.5.1. Power connections ...................................................................................................... 17
7.5.2. Control connections ..................................................................................................... 18
8. Commissioning ................................................................................................................................. 18
8.1. Preliminary checks ................................................................................................................. 18
8.2. Powering ............................................................................................................................... 19
9. Use and programming ....................................................................................................................... 19
9.1. Keyboard (version without display) .......................................................................................... 19
9.2. Keyboard and display ............................................................................................................. 20
9.3. Control via App ...................................................................................................................... 21
9.4. Initial display .......................................................................................................................... 21
9.5. Menu ..................................................................................................................................... 21
9.6. Control parameters ................................................................................................................. 22
9.7. Motor parameters ................................................................................................................... 25
9.8. IN / OUT parameters .............................................................................................................. 25
9.9. Connectivity parameters ......................................................................................................... 26
9.10. Pump stop under low irradiation conditions ............................................................................ 27
9.10.1. Minimum frequency stop ............................................................................................ 27
9.10.2. Shutdown due to minimal irradiation ........................................................................... 27
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9.10.3. Stop for minimum flow ............................................................................................... 27
9.11. Control by flow switch ........................................................................................................... 27
10. Constant pressure operation ............................................................................................................ 28
10.1. Introduction .......................................................................................................................... 28
10.2. The pressure vessel ............................................................................................................. 28
10.3. Electrical connections ........................................................................................................... 28
11. Splitting the solar pumping system ................................................................................................... 29
11.1. Introduction. ......................................................................................................................... 29
11.2. Solar pumping unit with two or more pumps in COMBO Solar. ................................................. 29
11.2.1. Cascade operating principle. ...................................................................................... 29
11.2.2. Electrical connections. ................................................................................................ 30
11.2.3. Programming the master unit. ..................................................................................... 30
11.2.4. Programming of slave units. ....................................................................................... 30
11.2.5. Automatic master replacement ................................................................................... 31
12. Alarms ............................................................................................................................................ 31
13. Alarms (version without display) ....................................................................................................... 33
14. Warnings ........................................................................................................................................ 36
15. Warnings (version without display) ................................................................................................... 37
16. EC Declaration of Conformity ........................................................................................................... 38
17. UK Declaration of Conformity ........................................................................................................... 39
SUND
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1. Introduction
1.1. Purpose of the manual
The purpose of this manual is to provide users with detailed information on the installation, operation, and mainte-
nance of the product, with special regard to safety regulations.
WARNING
Read the manual carefully before installing and using the product.
WARNING
Failure to follow the instructions may result in damage to the product, the system in which it is
installed and, in the worst cases, damage to property or persons with even fatal consequences.
NOTE
Store the manual in a protected and easily accessible place next to the installation location for
possible consultation. A digital copy of this manual can be downloaded from the manufacturer's
website or via the QR code shown on the product itself.
The complete installation, use and maintenance manual of the product, constantly updated in its contents, can be
downloaded by scanning the QR code shown in the product with the smartphone camera and following the relative
link.
1.2. Product overview
SUND Range of solar pumps for the circulation and filtering of swimming pool water. It guarantees:
• Energy saving thanks to photovoltaic power supply and variable speed operation.
• Quick return on investment.
• Extended life of the system and greater reliability.
• Quick and simplified installation thanks to the electronics integrated on-board the motor and control via smart-
phone.
• Extremely silent operation.
• Installation in humid and dusty environments thanks to the IP55 protection rating (NEMA 4).
In the application with photovoltaic panels, the MPPT (Maximum Power Point Tracking: tracking of the maximum
power point) function allows maximizing the electrical power obtained from the panel or the quantity of water
pumped for different irradiation and temperature conditions. When irradiation increases, the pump increases its
running speed and the water flow increases as a consequence. When irradiation decreases (at the passage of
clouds or at different times of the day), the pump reduces the frequency and consequently the flow rate, but
continues to supply water until irradiation falls below the minimum necessary to guarantee operation.
SUND it is powered by photovoltaic panels or, if necessary, by the mains. In this way, the operation of the pump
is guaranteed at any time of day. It is also possible to satisfy the demand peaks through mains power supply thus
avoid the oversizing of the photovoltaic system.
When installed, accessory HMA automatically manages the switching from one energy source to another based on
multiple logics that can be selected by the user:
SUND
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• irradiation level
• time of day
• achievement of the required daily flow rate
• remote control via digital input.
1.3. Nastec NSC solar calculator
To correctly size the solar pumping system, the Nastec NSC solar calculator is available free of charge on the site
solar.nastec.eu.
2. Safety
2.1. Symbols
TIP
This symbol indicates a TIP or recommendation.
NOTE
This symbol indicates a NOTE or an indication or concept to be emphasised.
CAUTION
This symbol indicates CAUTION, thus an indication which failure to respect can lead to minor or
moderate damage.
WARNING
This symbol indicates a WARNING, thus an indication which, in the event of non-compliance, may
lead to serious, even fatal damage to persons or things.
DANGER
This symbol indicates an ELECTRICAL HAZARD, which if not avoided will result in death or electro-
cution.
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2.2. Qualified personnel
WARNING
The installation, use and maintenance of the product are strictly for qualified personnel who have
undergone appropriate training. Any use by unqualified personnel must be carried out under the
approval, responsibility, and close monitoring of the latter.
WARNING
Failure to follow the instructions may result in damage to the product, the system in which it is
installed and, in the worst cases, damage to property or persons with even fatal consequences.
WARNING
Failure to comply with the instructions may lead to loss of warranty.
WARNING
Keep out of the reach of children.
2.3. Safety warnings
WARNING
During installation and use of the product, comply with the general safety regulations, working in a
clean, dry environment, free of hazardous substances and using the appropriate accident prevention
tools (gloves, helmet, goggles, shoes, and whatever else is necessary).
WARNING
The product is suitable for installation in industrial environments. In case of installation in a residential
environment, it is recommended to adopt all the safety precautions required by local regulations.
WARNING
The unsuitable use of the product, non-original spare parts or tampering with the hardware and/or
firmware of the product may lead to serious damage to property or persons in addition to the loss of
warranty. The manufacturer waives all liability due to the improper use of its products.
WARNING
Before commissioning the product, ensure that the installation is safe and in accordance with local
regulations.
WARNING
Comply with the provisions to meet EMC requirements.
WARNING
Use cables of the appropriate type and cross-section according to the electrical characteristics of the
load, the ambient temperature and local regulations.
WARNING
Any insulation tests may only be performed in accordance with the manufacturer's instructions.
Failure to do so may result in damage to the unit.
CAUTION
Electronic boards and components may be damaged by electrostatic discharge. We therefore, rec-
ommend to don't touch the components.
CAUTION
Take care during installation and electrical connection that no foreign bodies enter into the device.
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DANGER
During the entire period in which the device is powered, regardless of whether it is operated or
remains in stand-by (digital shutdown), high voltage is present inside the device and at the input and
output terminals.
DANGER
The device, previously in stand-by condition, may suddenly start up following the reset of an alarm
or changed system conditions. This may result in serious mechanical and electrical danger to the
operator who, upon seeing the device stopped, may have intervened on it, on the load or on the
system in which it is installed.
DANGER
Disconnect the device from the power supply, check that the load is completely stopped and wait at
least 15 minutes before intervening on it or on the load applied to it.
DANGER
If the motor is of the permanent magnet type, the device may be energized by the passive rotation of
the motor. In this case, both the power supply and the load should be disconnected before working
on the device itself.
DANGER
Ensure that the device is fully closed and all fixing screws are properly tightened before supplying
power. Do not remove the protective parts for any reason while the device is powered on.
DANGER
It is recommended to install the appropriate protection devices upstream of the device, such as a
circuit breakers, fuses and a residual current device (RCD).
DANGER
Make sure that the device and the loads connected to it are properly grounded with the appropriate
connection terminals before commissioning.
Ensure that the grounding system is compliant and refer to local regulations for grounding devices.
Each load must be fitted with its own earthing cable, the length of which must be as short as
possible. Do not make interconnected grounding connections.
Leakage currents may exceed 3.5 mA. It is recommended to use the reinforced ground connection if
necessary.
CAUTION
During operation, some surfaces may reach high temperatures that may cause burns upon contact
with skin. Be very careful when touching the device!
Avoid contact with flammable products.
WARNING
Do not start the pump for any reason unless it is completely filled with water.
Failure to do so may cause serious damage to the pump and the warranty will be void.
WARNING
During operation the pump produces a strong suction action that may trap people (especially chil-
dren) causing severe physical injury or even death. To reduce these risks, it is recommended to
install the pump and the system according to local regulations and check the correct functioning of
the grids that protect the suction points.
DANGER
Pay attention as the photovoltaic panels exposed to sunlight supply a DC voltage to any connected
devices.
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2.4. Acoustic emission
The device has an acoustic emission:
< 70 dB.
2.5. Certifications
The product has the following certifications:
• CE
3. Maintenance
3.1. Maintenance
WARNING
Before carrying out any work on the device, carefully read the chapter Safety [6] in the manual.
WARNING
Failure to follow the instructions may result in damage to the product, the system in which it is
installed and, in the worst cases, damage to property or persons with even fatal consequences.
WARNING
Failure to comply with the instructions may lead to loss of warranty.
The device requires the following maintenance:
Intervention Interval
Check the flow rate and pressure of the pumped liquid Every 6 months or following an alarm
Check that the device cools down correctly Every 6 months, or following a temperature
alarm
Check the suction filter Every 12 months
Check for any leaks Every 12 months
Check for alarms Every 12 months
Check the correct tightening of the power terminals Every 12 months
Verify the maintenance of the protection rating (ingress of dust or water) by checking the
tightening of the screws in the mechanical closing parts, the gaskets, and the cable glands.
Every 12 months
WARNING
In the event of long periods of inactivity, the pump should be emptied completely to avoid blocking
and freezing the hydraulic part.
WARNING
Do not loosen, unscrew or open the filter cover for any reason while the pump is running. If the pump
is installed under the water level, close the valve on the suction side before opening the filter cover.
TIP
For more information contact the dealer or technical support at [email protected] or by opening a
support ticket on the portal service.nastec.eu
3.2. Warranty
Nastec guarantees that the products accompanied by this warranty are free from material or workmanship defects.
The Company has the right to inspect any product returned under warranty, and confirm that the product contains
a material or workmanship defect. The Company has the exclusive right to decide whether to repair or replace
defective equipment, parts or components. To qualify for the warranty coverage, the buyer must return the product
to the place of purchase. Subject to the terms and conditions listed below, the Company agrees to repair or
SUND
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replace any part of this product that has material or workmanship defects. The Company will evaluate products
under warranty for 24 months from the date of installation (only in case of product registration) but no longer than
36 months from the date of invoice. IN NO EVENT shall the Company be liable for any other costs incurred by
the customer in removing and/or fastening any product, part or component thereof. The Company reserves the
right to change or improve its products or any part thereof, without being obliged to provide such a change or
improvement for products previously sold. THIS WARRANTY DOES NOT APPLY to products damaged by natural
events, including lightning, normal wear and tear, normal maintenance services, or any other condition beyond the
control of the Company. THIS WARRANTY WILL BE VOIDED if any of the following conditions occurs:
• The product is used for purposes other than those for which it was designed and manufactured.
• The product has not been installed in accordance with applicable codes and rulings.
• The product has not been installed by qualified personnel.
• The item has been damaged due to negligence, abuse, misapplication, tampering, alteration, improper installa-
tion, operation, maintenance and storage.
If the customer wishes to make a warranty claim, it is necessary:
• Fill in the warranty claim on the service.nastec.eu portal
• Wait for the result from the Nastec technical support service. The outcome may envisage the following:
• Absence of warranty based on the information received. A quotation for repair or spare parts may be made
upon request.
• Warranty advanced based on information received. Nastec will decide if the product is to be replaced under
warranty. However, Nastec reserves the right to inspect the product.
• Need to receive the product by the manufacturer in order to establish the potential warranty. Following the
analysis of the returned product, Nastec will establish the unquestionable existence or absence of the warranty
conditions by providing a detailed report on the damage found and its origins. If the warranty is applicable,
Nastec will repair the device. Nastec is willing to refurbish the product upon offer. In the absence of a warranty,
Nastec will make an offer to repair and/or refurbish the device. After 60 days from the offer, if no response
is received from the buyer, Nastec will scrap the product upon notice. Nastec does not cover any warranties
provided by the buyer to third parties, without its prior authorization.
3.3. Product registration
By registering the product on the portal service.nastec.eu, it is possible to activate the manufacturer's warranty
valid for 24 months from the registration date up to a maximum of 36 months from the date of manufacture,
according to the warranty conditions. Registration must be completed within one month from the date of installation
of the product.
The warranty is offered through the distribution chain. It is therefore necessary to specify the official distributor
or importer from which the product was purchased. Alternatively, the distributor can register the product in the
customer's name.
3.4. Spare parts
The manufacturer provides spare parts for the device. Contact your dealer for more information.
WARNING
It is recommended to use only original spare parts.
WARNING
Failure to follow the instructions may result in damage to the product, the system in which it is
installed and, in the worst cases, damage to property or persons with even fatal consequences.
WARNING
Failure to comply with the instructions may lead to loss of warranty.
3.5. Disassembly and repair
If it is necessary to disassemble and repair the device, it is recommended that the safety instructions be strictly
observed.
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WARNING
The installation, use and maintenance of the product are strictly for qualified personnel who have
undergone appropriate training. Any use by unqualified personnel must be carried out under the
approval, responsibility, and close monitoring of the latter.
WARNING
Failure to follow the instructions may result in damage to the product, the system in which it is
installed and, in the worst cases, damage to property or persons with even fatal consequences.
WARNING
Failure to comply with the instructions may lead to loss of warranty.
TIP
For more information contact the dealer or technical support at [email protected] or by opening a
support ticket on the portal service.nastec.eu
3.6. Disposal
Devices marked with this symbol cannot be disposed of in household waste but must be disposed of at appropriate
waste drop-off centres. It is recommended to contact the Waste Electrical and Electronic Equipment drop-off
centres (WEEE) in the area. If not disposed of properly, the product may have potential harmful effects on the
environment and on human health due to certain substances present within. Illegal or incorrect disposal of the
product is subject to severe administrative and/or criminal penalties.
4. Transport and storage
4.1. Transport
Avoid subjecting the product to severe shocks or extreme weather conditions during transport. The packaging must
remain dry and at a temperature between -20°C (-4°F) and +70°C (+158°F). Do not stack packages without first
checking feasibility with the manufacturer.
TIP
It is advisable to always indicate FRAGILE on the packaging
4.2. Inspection on delivery
Upon receipt of the product, check:
• the integrity of the packaging
• the integrity of the content
• the presence of all components
In case of problems, notify the forwarder immediately.
WARNING
The manufacturer declines all responsibility for damage to the product due to transport
4.3. Handling
The product must be handled by hand or using suitable lifting equipment in relation to its weight and the regulations
in force.
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If necessary, use dedicated handling equipment (cranes, ropes, trolleys), using the lifting points provided in the
product.
During handling it is recommended to:
• Handle with care
• keep away from suspended loads
• always wear accident prevention equipment
• be careful not to damage electrical cables
Do not handle the product using electrical cables as lifting gear.
WARNING
Failure to follow the instructions may result in damage to the product, the system in which it is
installed and, in the worst cases, damage to property or persons with even fatal consequences.
4.4. Storage
The product must be stored in its packaging in a dry place, without sudden changes in humidity and temperature
and protected from mechanical (weights, vibrations), thermal and chemical agents.
The temperature of the storage environment must be between -20°C (-4°F) and 70°C (+158°F) with a maximum
relative humidity of 85% (non-condensing).
If the product remains in stock for more than 24 months from the manufacturing date shown on the packaging, it is
necessary to check the mechanical integrity of its parts and supply power to it at least once every 12 months.
If the product is put back into storage after it has been used, it is advisable to contact the manufacturer for further
information on storage.
In particular, store the pump in a place with a minimum temperature that is not below 4 °C (40 °F).
TIP
For more information contact the dealer or technical support at [email protected] or by opening a
support ticket on the portal service.nastec.eu
5. Technical features
5.1. Technical Data
Electrical specifications by model:
Model Vin DC [VDC] Vin AC [VAC] Vnom ** I in [A] P2 [kW] P1 [kW] Max RPM
SUND 50 90 - 400 1 x 90 - 265 90 V Max 12 A
3,5 A (230 VAC)
0,55 0,8 3600
**Minimum voltage for nominal performances.
General electrical specifications:
Power supply frequency 50 - 60 Hz (+/- 2%)
EMC compliance EN61800-3 C1
Winding insulation class Class F
WARNING
If the device is powered by a generator set, make sure that:
• The generator set supplies the required voltage and is equipped with an electronic voltage regula-
tor (AVR).
• The power of the generator set is at least 50% higher than the rated electrical power of the device.
• The device is connected to the generator set only after the same has started.
• The device is disconnected from the generator set before the same is stopped.
• The device is not connected to the generator set when it is about to shut down due to lack of fuel.
Environmental specifications:
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Relative humidity of the operating environment 5 - 95 % non-condensing
Workplace temperature from -10 °C (14 °F) to 60 °C (140 °F)
Maximum workplace temperature at nominal load 50°C (122 °F)
Power derating beyond maximum temperature -2.5% every °C (-1.4% every °F)
Maximum altitude at nominal load 1000 m (3280 ft)
Power derating beyond maximum altitude - 1% every 100 m (328 ft)
Characteristics of the pumped liquid Clean, non-corrosive, non-explosive, free of solid particles and fibers,
with a maximum sand content of 50 g / m3
Fresh or salt water
Maximum temperature of the pumped liquid 40 °C (104 °F)
Mechanical specifications:
Protection rating IP55 (NEMA 4)
Resistance to vibrations EN60068-2-6:2008, EN60068-2-27:2009, EN60068-2-64:2008,
Maximum operating pressure 3 bar
Maximum suction head 2,5 m
Materials Pump in reinforced technopolymer; motor and inverter in aluminum
5.2. Performance
NOTE
The performance graphs show the performance of the pumps in terms of flow rate (Q), head (H) and
absorbed electrical power (P1). The graphs show average values with a tolerance of 15% and are
related to a water temperature of 20 °C (68 °F) and a density of 1 kg / m3.
The photovoltaic power (Pp) that must be installed to obtain the desired performance must be at
least equal to the electrical power (P1) absorbed by the pump at the working point. To take into
account the losses due to the temperature of the photovoltaic modules and other factors, increase
the photovoltaic power by 20% compared to the absorbed electrical power.
For a correct sizing of the system, use the solar calculator available free of charge by connecting to
the site solar.nastec.eu
Figure 1. SUND 50
328 f
t
295 ft
262 ft
230 ft
197 ft
164 ft
131 ft
98 ft
66 ft
0
10
20
30
40
50
60
70
]m
pg.S
.
U
[
Q
P1 [W]
328 f
t
295 ft
262 ft
230 ft
197 ft
164 ft
131 ft
98 ft
66 ft
0
50
100
150
200
250
300
Q[l/mi n]
P1 [W]
16 m / 52 ft
14 m / 46 ft
12 m / 39 ft
10 m / 33 ft
8 m / 26 ft
6 m / 20 ft
4 m / 13 ft
0
2
4
6
8
10
12
14
16
18
0 100 200 300 400 500 600 700 800 900 1000
Q[m 3/ h]
P1 [W]
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5.3. Dimensions and weight
142 mm
225
336 mm
308
170
520 mm
159
238 mm
212
225 mm
2 1/4” G
2 1/4” G
Model Weight [kg]
SUND 50 10,7
5.4. Cables entry
Cable gland Tightening torque
[Nm]
Cable diameter
[mm]
M12 1,5 3,5-7
6. Mechanical installation
WARNING
Read the safety chapter carefully before continuing.
6.1. Installation environment
WARNING
The environmental specifications stated in the technical data of the product must be strictly complied
with.
WARNING
Do not install the device in environments at a risk of explosion, flooding, or in the presence of
flammable fluids or solids. Ensure sufficient ventilation in the room.
Refer to local regulations when selecting the appropriate installation location.
WARNING
The degree of protection of the device is only ensured if, at the end of the installation, the cover
screws and the cable glands have been properly tightened. Close the holes of unused cable glands
with the appropriate plugs.
Protect the device from direct exposure to weather and sunlight.
Do not leave the device installed without cover or with the cable glands open, even if not connected
to the power supply. The infiltration of dust, water or humidity may irreparably damage the device.
SUND
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WARNING
To ensure uninterrupted operation, the device can gradually and automatically reduce performance
before shutting down following over-temperature. However, prolonged operation above the rated
temperature leads to a reduction in the life of the device.
6.2. Cooling
The motor and the inverter on-board are cooled by special fans through forced air circulation. In order to ensure
correct cooling, it is necessary that:
• the ambient temperature complies with the environmental specifications.
• the temperature of the pumped liquid complies with the environmental specifications.
• a distance of at least 150 mm is maintained between the motor / inverter unit and any surrounding walls.
6.3. Hydraulic connections
Install the pump horizontally on a sufficiently sturdy base raised from the ground (at least 10 cm). Preferably
use plastic pipes welded to the delivery and suction connections of the pump (external diameter 50 mm) using a
suitable sealing adhesive. The delivery and suction pipes must be correctly supported so as not to weigh down on
the pump connections.
6.4. SUND priming
In case of installation under the water level, fill the pump by slowly opening the gate valve in the suction line by
keeping the delivery gate open to let the air out. In the case of installation above the water level, remove the cover
and fill the pump by pouring water through the opening on the filter. Verify that the pump is properly primed before
starting it. Prolonged operation in non-primed condition can damage the pump itself.
7. Electrical installation
WARNING
Read the safety chapter carefully before continuing.
7.1. Grounding
DANGER
Make sure that the device and the loads connected to it are properly grounded with the appropriate
connection terminals before commissioning.
Ensure that the grounding system is compliant and refer to local regulations for grounding devices.
Each load must be fitted with its own earthing cable, the length of which must be as short as
possible. Do not make interconnected grounding connections.
Leakage currents may exceed 3.5 mA. It is recommended to use the reinforced ground connection if
necessary.
Use the following minimum cross-sections for ground cables:
• cross-section equal to the mains power cable cross-section up 16 mm2. (6 AWG)
• 16 mm2 (6 AWG) for mains power cable cross-section between 16 mm2 (6 AWG) and 35 mm2 (1 AWG).
• cross-section equal to half the cross-section of the power supply cable when the latter is greater than 35 mm2 (1
AWG).
7.2. Protection devices
DANGER
It is recommended to install the appropriate protection devices upstream of the device, such as a
circuit breakers, fuses and a residual current device (RCD).
Fuses and switches.
SUND
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The control device can protect the motor from overloads by digitally controlling the absorbed current against the set
rated current.
Instead, it is necessary to install overcurrent and short-circuit protection devices, such as fuses and circuit break-
ers, upstream of the device. These trigger in the event of failure of a component inside the device.
Install on the AC side:
Supply voltage Model Recommended fuse
gC
Recommended circuit breaker
ABB MCB S200
1 x 230 VAC SUND 50 10 S201-C10
Install on the DC side:
• DC disconnector of suitable voltage and current
• DC fuses of suitable voltage and current on both the positive and negative poles. Generally, DC fuses are
chosen for a current that is approximately double the short-circuit current of a string of panels and are installed
only if the photovoltaic system consists of three or more strings.
• surge arresters of suitable voltage and current
7.3. Connecting cables
WARNING
The connecting cables must comply with local regulations, feature the appropriate cross-section, and
meet the requirements for voltage, current, and temperature.
7.3.1. Power cable
WARNING
Always use cables with appropriate cable lugs, which may be supplied with the product.
7.3.2. Control cables
Model Maximum cross-section of the control cables Tightening torque [Nm]
Control terminals of all
models
1 mm20,5
WARNING
Use shielded cable for control cables.
WARNING
Always use cables with appropriate cable lugs, which may be supplied with the product.
7.4. Electromagnetic Compatibility (EMC)
The device meets the requirements of electromagnetic compatibility according to the EN61800-3 standard.
However, to ensure the electromagnetic compatibility of the system in which it is installed, it is necessary:
• use ground connection cables that are as short as possible.
• use shielded signal cables with the shield connected at one end only.
WARNING
Install signal, motor, and power cables separately from each other at a distance of at least 30 cm. If
the signal cables meet the power cables, cross them perpendicularly.
7.5. Electrical connections
SUND
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7.5.1. Power connections
SUND 50
MOTOR
W
V
U
EMC
L/L1 N/L2
F+ F-
AN1
AN2
AN3
AN4
+15
0V
+10
0V
IN1
IN2
IN3
IN4
COMBO MODBUS STATUS ALARM
G S2+ S2-
G S1+ S1- NO1 COM1 NC1 NO2 COM2 NC2
LINE
A [mm] Pre-insulated cable lug Stripping diagram
DC Power Sup-
ply
LINE
L1/L 70 6.3 x 0.8 mm female Faston
A
L2/N 70 6.3 x 0.8 mm female Faston
P.E. 70 6.3 x 0.8 mm female Faston
AC Power Sup-
ply
LINE
L1/L 70 6.3 x 0.8 mm female Faston
L2/N 70 6.3 x 0.8 mm female Faston
P.E. 70 6.3 x 0.8 mm female Faston
Motor
MOTOR
U120
(200) 6.3 x 0.8 mm female Faston Installation on board the engine
(A)
V120
(200) 6.3 x 0.8 mm female Faston
W120
(200) 6.3 x 0.8 mm female Faston
P.E. 120
(200) 6.3 x 0.8 mm female Faston
DANGER
Connect only one power source at a time (AC or DC).
NOTE
When connecting the DC power supply, it is not necessary to respect the polarity.
CAUTION
In order to ensure the correct running direction of the motor, respect the connections of the output
phases: U - red, V - black, W - blue
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7.5.2. Control connections
Type Description Functionality Comments
Analog inputs AN1 4-20 mA Sensor 1 -
AN2 4-20 mA Sensor 2 -
AN3 0-10 V External set value
AN4 0-10 V External frequency
External set value 2
Power Supply +15V 15 VDC, max 100 mA Power supply for 4-20 mA ana-
log inputs
Do not use as a power supply for
the digital inputs!
Power Supply +10V 10 VDC, max 3 mA Power supply for 0-10 V analog
inputs
Do not use as a power supply for
the digital inputs!
Signal GND 0V Insulated Signal GND for analog and digi-
tal inputs
-
Digital inputs IN1 Active low Motor start and stop Programmable as Normally Open
or Normally Closed.
IN2 Active low Motor start and stop
Switching of set value 1 and 2
Switching of work frequency 1
and 2
Programmable as Normally Open
or Normally Closed.
IN3 Active low Motor start and stop
Switching of sensors 1 and 2
Programmable as Normally Open
or Normally Closed.
IN4 Active low Alarms reset
Motor start and stop
Switch between main and auxili-
ary control modes
Programmable as Normally Open
or Normally Closed.
Relay outputs NO1 Normally Open STATUS relay
NO1, COM1: closed contact
with motor running.
NC1, COM1: closed contact
with motor stopped.
Potential-free contacts
Max 250 VAC, 2 A
Max 30 VDC, 2 A
COM
1
Common
NC1 Normally Closed
Relay outputs NO2 Normally Open ALARM relay
NO2, COM2: closed contact
without alarm.
NC2, COM2: closed contact
with alarm or without power
supply.
Potential-free contacts
Max 250 VAC, 2 A
Max 30 VDC, 2 A
COM
2
Common
NC2 Normally Closed
RS485 serial port S1+ Positive Communication
COMBO
-
S1- Negative -
G Serial GND The serial GND is isolated from the
signal GND
RS485 serial port S2+ Positive Communication
MODBUS RTU
-
S2- Negative -
G Serial GND The serial GND is isolated from the
signal GND
8. Commissioning
8.1. Preliminary checks
Before supplying power to the device, carry out the following electrical and mechanical checks:
• Verify proper grounding of the device, of the load, and of the entire system.
• Check the correct connection of the power supply cable and the motor cable, paying particular attention to any
connection reversal.
• Check the correct connection of the power and signal cables, paying particular attention to any polarity.
• Check that the connection terminals of the power and signal cables are correctly tightened.
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• Check the implementation of electromagnetic compatibility (EMC) regulations and the correct connection of cable
shields.
• Check that the protective devices are present and correctly installed.
• Check that the mechanical installation is correct, sturdy and complies with environmental and cooling require-
ments.
• Check that the pump is completely filled with water and that the filter cover is tightly closed.
• Check that the seals are intact and correctly positioned in their seats.
• Check that the cable glands and screws are properly tightened.
• Check that the device is completely closed and that live parts are not accessible.
NOTE
The pump may contain traces of water used for the final tests of the product. Before commissioning,
rinse with fresh water. Under no circumstance should solvents or other chemical products be used to
clean any part of the product.
8.2. Powering
DANGER
Before supplying power to the device, make sure you have read, understood and implemented all the
safety, mechanical, and electrical installation instructions.
At the end, it shall be possible to:
• power up the device.
• verify the correct switching on and the absence of alarm messages.
• perform programming.
• start the motor.
9. Use and programming
9.1. Keyboard (version without display)
1
2
3
4
5
6
7
1. Red LED ON: the unit is powered with the correct power supply voltage.
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FLASHING red led: undervoltage.
2. Green LED ON: motor running. Green led OFF: motor stopped. When the unit is in "constant value" control
mode, the green LED flashes with a greater frequency the closer the measured value is to the set value. If the
measured value is the same as the set value, the green LED is constantly on.
3. The yellow LED flashes with a variable frequency according to the type of alarm. See the chapter on alarms.
4. Starting and stopping the engine. If the unit is in an alarm state, it is possible to try to reset the alarm by
pressing the key twice.
5. +: parameter scrolling / parameter editing
Use the + key to increase the set value or frequency. In order to allow the set value to be edited, it is necessary
to hold down the + or - button for more than 5 seconds until the set value to be edited starts flashing. To confirm
the set value, simply wait 5 seconds or press the START/STOP button.
6. -: parameter scrolling / parameter editing
Use the - key to decrease the set value or frequency. In order to allow the set value to be edited, it is necessary
to hold down the + or - button for more than 5 seconds until the set value to be edited starts flashing. To confirm
the set value, simply wait 5 seconds or press the START/STOP button.
7. Green LED is ON when it is possible to change the set value (constant value mode) or the set frequency (fixed
frequency mode). Press and hold the Up key or the Down key for more than 5 seconds in order to allow the
set adjustment. If the SET led is off, it is not possible to change the set value. When two or more units are
in COMBO mode, the SET LED flashes only in correspondence with the master unit. In this way it is possible
to understand which unit in the group is the master and act on it to start or stop the system. The green LED
flashes quickly when the unit is connected to a smartphone for control via the App.
9.2. Keyboard and display
1
2
4
3
5
1. +: parameter scrolling / parameter editing
Use the + key to increase the set value or frequency. In order to allow the set value to be edited, it is necessary
to hold down the + or - button for more than 5 seconds until the set value to be edited starts flashing. To confirm
the set value, simply wait 5 seconds or press the START/STOP button.
2. -: parameter scrolling / parameter editing
Use the - key to decrease the set value or frequency. In order to allow the set value to be edited, it is necessary
to hold down the + or - button for more than 5 seconds until the set value to be edited starts flashing. To confirm
the set value, simply wait 5 seconds or press the START/STOP button.
3. Signaling LEDs:
• RED on: the device is powered with the correct supply voltage and is in stand-by.
• GREEN: motor running.
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