Nastec VASCO Solar 425, VASCO Solar 412, VASCO Solar 418, VASCO Solar 438, VASCO Solar 430 Operating Manual
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Operating manual
VASCO Solar
manVASCO_Solar_eng_03
2
Index
1. VASCO Solar Introduction .................................................................................................................................................. 3
2. Safety Instructions ............................................................................................................................................................. 4
3. Technical Characteristics ................................................................................................................................................... 5
3.1 Weight and dimensions .......................................................................................................................................................... 6
4. Electric wiring .................................................................................................................................................................... 7
4.1 Protections ............................................................................................................................................................................. 10
4.2 Electromagnetic compliance .................................................................................................................................................. 10
4.3 Installation with long motor cables ....................................................................................................................................... 10
5. VASCO Solar installation (SIZE 1) ......................................................................................................................................11
6. PV system sizing ...............................................................................................................................................................12
7. VASCO Solar Installation for constant pressure control .......................................................................................................... 13
7.1.1 Pressure tank .............................................................................................................................................................. 13
7.1.2 Pressure sensor ........................................................................................................................................................... 14
8. VASCO Solar Use and Programming ..................................................................................................................................14
8.1 VASCO Solar display .............................................................................................................................................................. 14
8.2 Initial configuration ............................................................................................................................................................... 15
8.3 Initial view ............................................................................................................................................................................. 16
8.4 Menu view............................................................................................................................................................................. 17
8.5 Installer parameters .............................................................................................................................................................. 17
8.6 Advanced parameters ............................................................................................................................................................ 23
9. Protections and alarms .....................................................................................................................................................25
3
1. VASCO Solar Introduction
VASCO Solar Solar inverters come to power traditional pumping systems using photovoltaic energy.
In this way it’s possible to convert old systems in renewable energy installations or to use the same AC pumps in the creation
of independent, cost-saving and environmentally sustainable water systems.
VASCO Solar Solar is able to convert DC voltage coming from photovoltaic panels into AC voltage for powering any pump
driven by three phase asynchronous motor.
MPPT (Maximum Power Point Tracking) maximizes, for various conditions of irradiation and temperature, the electrical
power drawn from the panels so the amount of pumped water.
Pump speed is constantly adapted to available solar irradiation thus maximizing the amount of pumped water and making
possible operation even in low irradiation conditions.
VASCO Solar also offers complete pump protection against over-voltage, over-current and dry running.
VASCO Solar can be used with any type of traditional AC pump thus offering maximum flexibility in several application areas.
In the use with submersible pumps, VASCO Solar allows to fill tanks for watering livestock or simply irrigate lawns or crops.
In the use with surface pumps, VASCO Solar can serve an irrigation fishing from a nearby water reserve or feed with no
energy cost a pool pump.
5
6
ON OFF
1. VASCO Solar
2. Submersiblepump
3. DC circuit breaker
4. PV panels
5. Tank
6. Level switch
1
2
3
4
4
2. Safety Instructions
The manufacturer strongly suggests carefully reading this operation manual before using and installing its products
Any operation (installation, maintenance and repair) must be carried out by trained, skilled, and qualified personnel.
Failure to observe and follow the instructions in this manual may result in dangerous and potentially lethal electric shock.
Pay attention to all standard safety and accident prevention regulations
The device must be connected to main power supply via a switch to ensure the
complete disconnection from the network before any operation on the VASCO
Solar itself (including visual inspection) and/or on the connected load.
Disconnect VASCO Solar from the power supply before commencing any work.
Do not remove, for any reason, the cover and the cable plate without having first
disconnected the device from the main power supply and having waited at least
5 minutes.
VASCO Solar and pumping system must be grounded properly before operation.
For the entire period VASCO Solar is powered, high voltage is present on the
output terminals of the inverter whether or not the pump is running.
Tightening all 4 screws on the cover with washers is recommended before
powering the device. Otherwise, there may be a failure to connect the cover to
ground, creating the risk of electric shock or even death.
Avoid any shock or significant impact during transport.
Check the VASCO Solar immediately upon delivery and check for damage and/or missing parts. If either occurs, immediately
notify the supplier.
Damages due to transport, incorrect installation, or improper use of the device will null and void the warranty.
Tampering or disassembly of any component will automatically void the warranty.
The manufacturer cannot be held responsible for any damages to people and/or property due to improper use of its
products.
5
3. Technical Characteristics
Model
Vin
Vin
P1 nom
Max
Vout
Max I
out
Typical motor
P2
Size
[VDC]
[VDC]
[VAC]
[A]
[VAC]
[kW]
VASCO Solar 212
120 – 650
> 320
3 x 230
12
3 x 230
2,2
1
VASCO Solar 409
320 – 850
> 560
3 x 400
9
3 x 400
3
1
VASCO Solar 412
320 – 850
> 560
3 x 400
12
3 x 400
4 1 VASCO Solar 415
320 – 850
> 560
3 x 400
15
3 x 400
5,5
1
VASCO Solar 418
320 – 850
> 560
3 x 400
18
3 x 400
7,5
1
VASCO Solar 425
320 – 850
> 560
3 x 400
25
3 x 400
11
1
VASCO Solar 430
320 – 850
> 560
3 x 400
30
3 x 400
15
1
VASCO Solar 438
320 – 850
> 560
3 x 400
38
3 x 400
18,5
2
VASCO Solar 448
320 – 850
> 560
3 x 400
48
3 x 400
22
2
VASCO Solar 465
320 – 850
> 560
3 x 400
65
3 x 400
30 2 VASCO Solar 485
320 – 850
> 560
3 x 400
85
3 x 400
37
2
Max ambient temperature at nominal current: 50°C (122 °F)
Max. altitude at nominal current: 1000 m
Grade of protection: IP65 (NEMA 4) (Size 1) , IP54 (NEMA 12) (Size 2)
RS485 serial communication
* avoid direct exposition to solar rays.
VASCO Solar Solar is able to power the motor with a higher current for a short period of time according to the linear
relation: 101% of the nominal current for 10min., 110% nominal current for 1 min.
6
3.1 Weight and dimensions
Model
Weight
Size
[Kg]
VASCO Solar 212
8,2
1
VASCO Solar 409
8,3
1
VASCO Solar 412
8,5
1
VASCO Solar 415
8,5
1
VASCO Solar 418
8,7
1
VASCO Solar 425
8,7
1
VASCO Solar 430
8,7
1
VASCO Solar 438
28
2
VASCO Solar 448
28
2
VASCO Solar 465
28
2
VASCO Solar 485
28
2
SIZE 1
SIZE 2
7
4. Electric wiring
Power board VASCO Solar SIZE 1
DC Input:
LINE: L1, L3, GND
It is recommended to use cable
lugs.
It is not necessary to respect
polarity.
Motor output:
MOTOR: U, V, W, GND
It is recommended to use cable
lugs.
12 V dc auxiliary fans (wall
mounting kit)
VENT: +, WARNING: respect the polarity.
Cable stripping recommended for line input and output to the motor.
8
Power board VASCO Solar Size 2
Power supply:
INPUT: P.E. , + , -
It is necessary to respect the polarity
It is recommended to use cable lugs.
Motor output:
MOTOR: U, V, W, P.E.
It is recommended to use cable lugs.
Cable stripping recommended for motor cables.
9
Control board
Analog inputs (10 or 15 Vdc):
1. AN1: 4-20 mA: sensor 1
2. AN2: 4-20 mA: sensor 2
3. AN3: 4-20 mA / 0 - 10 Vdc
(settable by jumper C.C.):
external set
4. AN4: 4-20 mA / 0 - 10 Vdc
(settable by C.C.): trimmer for
frequency regulation /
external set 2
Digital outputs:
motor run signal:
NO1, COM1: closed contact with motor
running.
NC1,COM1: closed contact with motor
stopped.
alarm signal
NO2,COM2: opened contact without
alarm.
NC2,COM2: closed contact without alarm.
DOL1 pump relay:
NO3,COM3: closed contact with DOL1
running.
NC3,COM3: opened contact with DOL1
running.
DOL2 pump relay:
NO4,COM4: closed contact with DOL2
running.
NC4,COM4: opened contact with DOL2
running.
Relays are no voltage contacts. Max.
voltage to the contacts is 250 V with max
current of 5 A.
RS485:
S+
S-
G
It is recommended
to respect the
polarity linking
more VASCO Solars
in series.
Digital inputs:
IN1 : motor start & stop
IN2: value set 1 & 2 switching
IN3: sensor 1 & 2 switching
IN4 : motor start & stop +
alarms reset
0V
We recommend using only no
voltage contacts.
Opening or closing the digital
contacts (depending on software
configuration set (see inst.
parameters) you can start or stop
the motor.
10
4.1 Protections
The protections required upstream each VASCO Solar depends on the type of installation, and local regulations. We
recommend to use 1000 VDC circuit breaker and, if possible, 1000 VDC surge protection.
4.2 Electromagnetic compliance
To ensure electromagnetic compatibility (EMC) of the system, it is necessary to apply the following measures:
Always connect the device to ground
Use shielded signal cables by placing the screen at one end.
Use motor cable as short as possible (<1 m / <3 ft). For longer lengths, it is recommended to use shielded cables
connecting the screen at both ends.
Separate signal, motor, and power supply cables.
Note: To enable the restoration of the display screen when there are electromagnetic interference, VASCO Solar
periodically provides some fast "refresh" of the display.
4.3 Installation with long motor cables
With long motor cables it’s recommended to decrease the
commutation frequency from 10 kHz (default) to 2.5 kHz
(advanced parameters). This reduces the probability of
voltage spikes in the motor windings which may damage
the insulation.
To prevent dangerous overheating of dv / dt and sinusoidal
filters it is recommended to set the correct PWM value in
relation to the cable length.
For motor cable lengths up to 50 meters it’s recommended
to place between VASCO Solar and motor a dv / dt
reactance, available on request.
For motor cable lengths greater than 50 meters it’s
recommended to place between VASCO Solar and motor a
sinusoidal filter, available on request.
11
5. VASCO Solar installation (SIZE 1)
n.° 2 12 V DC fans.
n.° 1 fans cover.
n.° 2 fans cover fixing screws
n.° 2 wall fixing brackets
n.° 4 M5 screws for VASCO Solar fixing to the brackets
n.°1 holes reference sheet
12
6. PV system sizing
The pumping system must be designed considering daily flow rate required, total head and installation site.
In particular, the choice of the pump must be carried out considering the average daily radiation.
Once determined the required pump, must need to know:
Rated pump power (P2)
Electrical motor power (P1). P1 can be derived by dividing P2 with motor efficiency.
Rated motor current
Rated motor voltage (3 x 230 VAC or 3 x 400 VAC)
VASCO Solar model to be used is determined by considering voltage and rated motor current.
To ensure maximum performance, the PV system, consisting of 1 or more strings of solar panels connected in series, must
provide:
Electrical motor power (P1)
The photovoltaic power (Wp) must be at least equal to the electric motor power (P1). Typically, taking into account the
efficiency loss due to panels temperature, it is recommended to increase Wp of 15% respect to P1.
Rated motor voltage at maximum power
The rated voltage of each PV string (Vmp) must be at least equal to the rated motor voltage multiplied by the factor 1,4.
The open-circuit voltage of each string (Voc) must be less than the maximum operating voltage of VASCO Solar.
Example:
Pump nameplate
Rated motor power: P2 = 3 kW
Electric motor power: P1 = 4 kW
Rated motor current: 8.3 A
Rated motor voltage: 3 x 400 VAC
13
VASCO Solar selection
Being the rated motor voltage 400 VAC and the rated current 8.3 A, the most suitable model for the application is VASCO
Solar 409.
PV system sizing
PV panels used:
Wp = 240 W
Vmp = 30 VDC
Voc = 37 VDC
Imp = 8 A
Since P1 = 4 kW, considering efficiency loss due to temperature, the required electrical power is increased of 15% so Wp =
4.6 kW.
To develop 4.6 kW are needed 19 panels of 240 W.
Vmp = 19 x 30 = 570 VDC is greater than the rated motor voltage multiplied by 1.4 (400 x 1.4 = 560 VDC) and Voc = 19 x 37 =
703 VDC is less than the maximum voltage of VASCO Solar 409 (850 VDC).
For this reason a single string of 19 PV panels can be installed.
7. VASCO Solar Installation for constant pressure control
VASCO Solar, apart from MPPT control, offers other several operation modes such as constant pressure with 1 or 2 reference
values.
This last operation mode is particularly indicated in those plants where it’ s preferred to store electrical energy in batteries
and use it when it occurs.
To ensure maximum energy saving, and lengthen batteries life, it’s useful to select constant pressure mode in which the
pump speed, and so the power consumption, is varied while maintaining a constant desired pressure.
VASCO Solar controls the pump speed to maintain constant pressure at a set point independent of the water demand in the
system. A basic schematic is shown below:
7.1.1 Pressure tank
Installation of a pressure tank in the hydraulic system is recommended to compensate leakage of water in the system (or
during minimum water demand) and to avoid continuous start/stop cycling of the pump (check the appendix for more
information). Selecting the proper volume and pre-charge pressure of the tank is very important; smaller tank volumes will
not compensate adequately for minimum water usage or leakage, while larger volumes make it more difficult for VASCO
Solar to control the pressure evenly.
Recommended tank volume is equal to the 10% of the maximum water flow of the system (expressed in volume unit/min)
Example: if the max water flow is 50 liters/min, the pressure tank should have a capacity of 5 liters
If the max water flow is 20 gpm, the pressure tank should have a capacity of 2 gallons
Pre-charge pressure of the pressure tank should be at least 80% than the set-pressure of the system.
Example: if the set-pressure of the system is 4 bar, the pre-charge pressure of the tank should be 3.2 bar
If the set-pressure of the system is 60 psi, the pre-charge pressure of the tank should be 48 psi
VASCO Solar
1 2 3
5
4
1: pump
2: check valve
3: pressure tank
4: valve
5: valve
6: pressure sensor
6
14
7.1.2 Pressure sensor
VASCO Solar requires a pressure sensor with a linear output signal within the range 4 – 20 mA. The pressure transducer can
be powered by any range of DC Voltage which includes the value 15 V dc.
VASCO Solar accepts the signal of a second pressure sensor in order to:
realize constant differential pressure (AN1 – AN2).
substitute first pressure sensor when it fails
switch pressure sensor by closing digital input IN2
SENSOR 1
AN1: 4-20 mA (-) signal
+15V: 15 Vdc (+) power supply
SENSOR 2
AN2: 4-20 mA (-) signal
+15V: 15 Vdc (+) power supply
8. VASCO Solar Use and Programming
VASCO Solar software is extremely simple to use, but allows a wide variety of parameters to be set for ideal system
calibration. Setting Parameters are organized in 2 levels:
1: Installer level
A password is required for this level; these parameters are adjustable by trained professionals
Default password: 001
From the menu a different password can be set up.
2. Advanced level
A second and different password is required; improper setting of these advanced parameters could compromise the
integrity and the life of VASCO Solar and pump;
Default password 002
It is possible to set up a different password.
Installer and Advanced levels can be entered only with the correct password; otherwise, it is impossible to set up
and/or modify any parameters (they can be only displayed).
8.1 VASCO Solar display
Screen is a back-lit LCD displaying 2 rows of 16 digits each. Alarms are indicated by an audible signal.
STOP motor
Menu exit
Alarms reset
START motor
ENTER
Scroll up
Scroll down
15
8.2 Initial configuration
When VASCO Solar is switched on for the first time, the initial setting menu is displayed for the initial setting of parameters
to configure pump and system characteristics.
If the initial setting procedure is not completed properly, it is impossible to run the pump. Initial setting procedure can be
repeated if necessary.
The initial setting procedure can be repeated (by using the 2rd level password) to reconfigure VASCO Solar or if VASCO Solar is
installed in a different system.
A brief description of parameters and their allowable ranges are listed below:
Parameter
Default
Description
XXXX
End user communication language
XXX
Open circuit voltage of PV strings. Please refer to PV panels
datasheet.
XXX
Motor rated voltage (as shown in the motor plate)
Average voltage drop due to the inverter is between 20 V and 30
Vrms based on load condition.
XX
Rated current of the motor per it’s nameplate indication increased
by 10%. The voltage drop caused by the inverter leads to higher
input current than nominal. Make sure motor is capable of
accepting increased current.
50
Rated frequency of the motor per its nameplate.
Control mode: MPPT
Press START/STOP to run a test at rated frequency
Warning: make sure to run the system without damaging pump
and system
--->
If, during the test, the motor runs in reverse, it is possible to change
the wiring sequence via software without physically changing wires
at the terminals.
OFF
If ON is selected, after a lack of voltage, VASCO Solar returns to its
normal status; if VASCO Solar was powering the pump before the
voltage drop, it resumes powering the pump automatically.
Warning, review the advice in chapter 1
Once the Setting procedure is completed you will get this indication
on the display; setting parameters are recorded by VASCO Solar;
these parameters can be set up individually in the INSTALLER
Parameters menu or ADVANCED Parameters menu.
Language
XXXXXX
Open circuit Volt. PV
V = XXX [V]
Rated motor Volt.
V = XXX [V]
Rated motor Amp.
I = XX.X [A]
Rated motor freq
f = XXX [Hz]
Motor test
START/STOP
Rotation sense
---> / <---
Autorestart
ON/OFF
INITIAL SETUP
COMPLETED
16
8.3 Initial view
When first powering the VASCO Solar, the display shows : release of display software (LCD = X.XX) and the release of
inverter software (INV = X.XX) as shown below:
The following End User messages are displayed by pushing the scroll buttons:
p is the pressure value read by the pressure transducer.
By pressing ENTER the pressure set value is displayed <XXX.X>
V_in is the line voltage.
I is the the absorbed motor current.
cosphi index means the angle phi between the voltage and current absorbed by the
motor
P is the power in Watts supplied to the pump.
NORMAL status means no alarms.
If an alarm occurs, a message blinks on the display and an audible signal is
activated.
Pressing ENTER accesses: VASCO Solar lifetime, PUMP lifetime, consumption
statistic, alarm list.
To return to previous views, press ENTER.
First row gives the VASCO Solar status:
Inv: ON XXX.X Hz VASCO Solar is powered and is powering the motor showing its frequency.
Inv: ON Mot: OFF VASCO Solar is powered but motor is not running
Inv: OFF Mot: OFF VASCO Solar is not powered
If COMBO function is activated, the VASCO Solar address is placed close to indication “Inv”.
Inv: ON/OFF Mot: ON/OFF
p = XX.X [bar]
Inv: ON/OFF Mot: ON/OFF
V_in = XXX [Hz]
Inv: ON/OFF Mot: ON/OFF
I= XX.X [A]
Inv: ON/OFF Mot: ON/OFF
cosphi = XXX
Inv: ON/OFF Mot: ON/OFF
P = XXXXX [W]
XXXXXXXXXXXXXXX
XXXXXXX h : XX m
%f 25 50 75 100
%h XX XX XX XX
Motor Life
xxxxx h : xx m
Inverter Life
xxxxx h : xx m
Inv: ON/OFF Mot: ON/OFF
STATUS: NORMAL
LCD = X.XX
INV = X.XX
17
8.4 Menu view
Pressing ENTER when you are in [MENU’ / ENT to access] in initial display, will display the following MENUs:
Installer password required to enter level 1 (default 001)
Advanced password required to enter level 2 (default 002)
Installer password required to enter level 1 (default 001)
It is possible to return to original set parameters.
Advanced password required to enter level 2 (default 002)
To exit the Menu level and return to initial display, press STOP button.
8.5 Installer parameters
Many of the Installer parameters are set during the Initial Configuration (chapter 6.2 Initial Configuration).
However, through the Installer Parameters menu, it is possible to change the set parameters or set others in order to perfect
the calibration of VASCO Solar to the pumping system.
parameter
default
desciption
MPPT Constant
value
Fix speed Const.
value 2 set
Fix speed 2 val. External speed
MPPT
Mode of control:
MPPT: pump speed is adjusted in order to obtain maximum
power available from PV panels.
Constant value: VASCO Solar changes the speed of pump to
keep the set value constant, independent of water demand.
Fix speed: VASCO Solar feeds the pump a set frequency, so the
speed of motor is kept constant.
Const. value 2 set: the two values are selected by opening or
closing the digital input IN2.
Fix speed 2 val: to be selected by opening or closing the digital
input IN2.
External speed: control motor frequency by using analogical
input AN4.
bar
Unit
16
Sensor full scale.
MENU’
Install. param.
MENU’
Advanced. param.
MENU’
Retrive init.set
MENU’
Change init.set.
Control mode
MPPT
Constant value
Fix speed
Const.value 2set
Fix speed 2 val.
External speed
Unit
XXXXX
F. scale sensor
p = XX.X [bar]
18
parameter
default
desciption
MPPT Constant
value
Fix speed Const.
value 2 set
Fix speed 2 val. External speed
0
Sensor minimum value.
10
Maximum value allowed in the
system. If the readen value goes
over this value, an alarm occurs
and the pump is stopped. Pump is
automatically restarted if the
readen value goes below the
maximum value for a period of at
least 5 seconds.
0
Minimum value allowed in the
system. If the readen value goes
lower than this value, an alarm
occurs and the pump is stopped.
Pump is automatically restarted if
the readen value goes higher than
the minimum value for a period of
at least 5 seconds.
OFF
Enabling of set value changing by
analog input AN3.
3
The set value to be kept constant.
0
Value compensation at the
maximum frequency for each
pump. Acting on the green button
you can reverse the sign.
3
The set value to be kept constant.
0
Value compensation at the
maximum frequency for each
pump. Acting on the green button
you can reverse the sign.
5
Time to update set value for
compensation.
Min value sensor
p = XX.X [bar]
Max alarm value
p = XX.X [bar]
Min alarm value
p = XX.X [bar]
Ext.set enabling
ON/OFF
Set value
p = XX.X [bar]
Compensation
p = XX.X [bar]
Set value 2
p = XX.X [bar]
Compensation 2
p = XX.X [bar]
Set value update
t = XX [s]
19
parameter
default
desciption
MPPT Constant
value
Fix speed Const.
value 2 set
Fix speed 2 val. External speed
To ensure proper operation of pressure control is recommended to place the sensor near the pump.
To compensate the pressure loss in the pipes (proportional to flow) it is possible to vary the pressure set in a linear
relation with respect to frequency.
It can perform the following test to verify the correct value of compensation:
1. install a pressure gauge away from the pressure sensor
2. open completely the valve
3. check the pressure gauge
--> Set the value of compensation. equal to the difference of the values from the two gauges.
When using a group of pumps, the pressure compensation to be applied to each pump is equal to the total pressure
compensation (when all the pumps are running at full speed) divided by the number of pumps in the group.
50
Set the frequency value to feed the
pump.
50
Set the frequency value to feed the
pump.
50
Minimum frequency below which
the pump tries to stop.
5
Delay for which the pump tries to
stop below freq.min. control.
20
Ramp time from freq.min.control
to min.motor freq. If, during this
time, the readen value goes below
the (set value - delta control),
Q
H
Minmot. freq. Max mot. freq.
Set value (3 bar)
4 bar
Pressure
sensor
300 m
Compensation (1 bar)
Operating freq.
f = XXX [Hz]
Operating freq. 2
f = XXX [Hz]
Freq.min.control
fmin = XXX [Hz]
Stop delay
t = XX [s]
Control ramp
t = XX [s]
20
parameter
default
desciption
MPPT Constant
value
Fix speed Const.
value 2 set
Fix speed 2 val. External speed
VASCO Solar powers the motor
again; otherwise, VASCO Solar will
stop the pump.
0.1
This value represents the value
drop below the set value required
to restart the pump during control
ramp.
0.5
This value represents the value
drop below the set value required
to start the pump from stop
condition.
0.5
It's the value increase respect to
set value which must be passed so
that there is a forced shutdown of
the pump.
Kp and Ki parameters allow the
dynamic control of system by
VASCO Solar; set values (Ki=50,
Kp=005) are usually enough to get
a valid dynamic control.
OFF
Function to activate (ON) the first
auxiliary pump DOL 1 (Direct On
Line pump).
OFF
Function to activate (ON) the
second auxiliary pump DOL 2
(Direct On Line pump).
OFF
Function to allow alternating
starting priority between the DOL
pumps in order to allow equal use
of them.
sec
Hz
Freq.min.control
press.
Set value
Minmot. freq
Stop delay
Controlramp
Delta control
Delta control
p = XX.X [bar]
Delta start
p = XX.X [bar]
Delta stop
p = XX.X [bar]
Kp
XXX
Ki
XXX
Pump DOL 1
ON/OFF
Pump DOL 2
ON/OFF
Alternance
ON/OFF
21
parameter
default
desciption
MPPT Constant
value
Fix speed Const.
value 2 set
Fix speed 2 val. External speed
1
delay time with which the pumps
DOL start after the variable speed
pump has reached the maximum
frequency and the readen value
has fallen below set value – delta
control.
OFF
Function to enable multiple VASCO
Solar’s to work in parallel as
described in the technical appendix
(see the relevant chapter). Up to 8
VASCO Solar units can be
connected in parallel.
VASCO Solar’s communication
through RS 485 gates is granted by
a private protocol.
Direct
Direct: increasing measured value,
VASCO Solar decreases motor
frequency.
Reverse: increasing measured
value, VASCO Solar increase motor
frequency.
--->
If, during the test, the motor runs
in reverse, it is possible to change
the wiring sequence via software
without physically changing wires
at the terminals.
0.65
If the pump goes into dry-running,
the cosphi reaches its lowest level.
To set this value, contact the pump
manufacturer or test by closing the
suction and checking the value on
the VASCO Solar display; a value
can be set by assuming a dry
cosphi equivalent to 60% of the
rated cosphi specified by the
manufacturer.
10
Restart delay after a dry running
alarm. At each tentative (max 5)
restart delay will be doubled.
N.O.
By selecting N.A. (normally open)
VASCO Solar runs the motor if the
digital input 1 is open; motor will
be stopped if the digital input 1 is
closed.
By selecting N.C. (normally closed)
VASCO Solar runs the motor if the
digital input 1 is closed; motor will
be stopped if the digital input 1 is
opened.
N.O.
By selecting N.A. (normally open)
VASCO Solar runs the motor if the
digital input 2 is open; motor will
be stopped if the digital input 2 is
closed.
Start delay AUX
t = XX [s]
COMBO
ON/OFF
PI control
Direct/Reverse
Rotation sense
---> / <---
Dry run cosphi
cosphi = X.XX
Restarts delay
t = XX [min]
Digital input 1
N.O. / N.C.
Digital input 2
N.O. / N.C.
22
parameter
default
desciption
MPPT Constant
value
Fix speed Const.
value 2 set
Fix speed 2 val. External speed
By selecting N.C. (normally closed)
VASCO Solar runs the motor if the
digital input 2 is closed; motor will
be stopped if the digital input 2 is
opened.
N.O.
By selecting N.A. (normally open)
VASCO Solar runs the motor if the
digital input 3 is open; motor will
be stopped if the digital input 3 is
closed.
By selecting N.C. (normally closed)
VASCO Solar runs the motor if the
digital input 3 is closed; motor will
be stopped if the digital input 3 is
opened.
N.O.
By selecting N.A. (normally open)
VASCO Solar runs the motor if the
digital input 4 is open; motor will
be stopped if the digital input 4 is
closed.
By selecting N.C. (normally closed)
VASCO Solar runs the motor if the
digital input 4 is closed; motor will
be stopped if the digital input 4 is
opened.
3
Digital input IN2 and IN3 delay.
Digital input IN1 and IN4 have 1
second fix delay.
Pressing ENT allows the installer
level password (1st level) (default
001) to be changed.
Digital input 3
N.O. / N.C.
Digital input 4
N.O. / N.C.
Dig.In.2/3 delay
t= XX [s]
Change PASSWORD1
ENT
23
8.6 Advanced parameters
All the advanced parameters, due to their importance, are already set during initial setup (cap. 6.2 Initial Configuration).
However, it is always possible to modify individual parameters or modify the password 2:
Parameters
Default
Description
XXX
Open circuit voltage of PV strings. Please refer to PV panels datasheet.
XXX
Motor rated voltage (as shown in the motor plate)
Average voltage drop due to the inverter is between 20 V and 30 Vrms
based on load condition.
1%
Refers to the voltage increase during the start up of the motor.
Warning: An excessive value can seriously damage the motor. Contact the
motor manufacturer for further information.
If a single-phase motor is used, a value of 1% is suggested to increase the
starting torque.
XX
Rated current of the motor per it’s nameplate indication increased by 10%.
The voltage drop caused by the inverter leads to higher input current than
nominal. Make sure motor is capable of accepting increased current.
50
Rated frequency of the motor per its nameplate.
50
Maximum frequency of the motor. Note: by reducing the maximum
frequency of the motor, maximum current will be reduced as well.
30
Minimum frequency of the motor. Note: depends on the selected pump
type; for submersible pumps with water filled motors, is not advisable to
set minimum frequency lower than 30 Hz in order to protect the integrity
of the thrust bearings.
4
Ramp-up time to reach the speed required to achieve the set pressure (or
frequency value). Longer times delay the system reaching the preset value
but better protect system components.
Excessively long ramp-up times can create difficulties in VASCO Solar setup,
and can also cause false overload alarms.
4
Ramp-down time to reach zero speed. Longer times keep the system
pressurized, while protecting the system components.
Excessively long ramp-down times can create difficulties in VASCO Solar
setup. Excessively short ramp-down times can cause false overload alarms.
1.5
Time to reach the minimum frequency of the motor and vice versa.
When VASCO Solar is used to control a water filled submersible motor it’s
important to keep this time at 1 second.
8
Carrier frequency (switching frequency).
It is possible to chose PWM in the range of 2.5 ,4, 6, 8, 10 kHz .
Higher values give a more sinusoidal wave with fewer losses. If long cables
are used (>20 m / >76 ft) (submersible pump) it is recommended to install
an inductive filter between VASCO Solar and the motor (available upon
request) and to set the value of PWM to 2.5 kHz. This reduces the risk of
voltage spikes, which can damage motor and cable insulation.
Open circuit Volt. PV
V = XXX [V]
Rated motor Volt.
V = XXX [V]
Voltage boost
V = XX [%]
Rated motor Amp.
I = XX.X [A]
Rated motor freq
f = XXX [Hz]
Max motor freq.
f = XXX [Hz]
Min motor freq.
f = XXX [Hz]
Ramp up time
t = XX [sec]
Ramp down time
t = XX [sec]
Ramp f min mot.
t = XX [sec]
PWM
f = XX [kHz ]
24
85 %
This parameter allows you to change the V / f characteristic with which
VASCO Solar feeds the engine. The linear characteristic corresponds to
constant torque with variable speed. The quadratic characteristic is
normally used with centrifugal pumps. The selection of torque
characteristic should be done ensuring a smooth operation, a reduction of
energy consumption and a lower level of heat and acoustic noise. When
feeding singlephase motors it’s suggested to set V/f as linear (0%).
OFF
If ON is selected, after a lack of voltage, VASCO Solar returns to its
normal status; if VASCO Solar was powering the pump before the
voltage drop, it resumes powering the pump automatically.
Warning, review the advice in chapter 1.
0
Pump periodic autorun after XX hours of inactivity. Value 0 makes
function disabled.
Warning, review the advice in chapter 1.
Indipendent
Function logic for analog input AN1,AN2.
20%
Zero correction for analog input 1
(20 mA x 20% = 4 mA).
20%
Zero correction for analog input 2
(20 mA x 20% = 4 mA).
20%
Zero correction for analog input 3
(20 mA x 20% = 4 mA).
V/f lin. --> quad.
XXX %
V nom
mot
V
f
f nom mot
f min mot
V boost
Autorestart
ON/OFF
Periodic autorun
t = XX [h]
AN1,AN2 function
XXXXXX
Offset input 1
x = XX.X [%]
Offset input 2
x = XX.X [%]
Offset input 3
x = XX.X [%]
25
00%
Zero correction for analog input 4 (default 0-10V)
(10V x 00% = 0 V).
Pressing ENT allows the advanced level password (2st level) (default
002) to be changed.
9. Protections and alarms
Anytime a protection occurs a blinking message is displayed together with an audible alarm; on STATUS in the initial view, the
protection is displayed; by pressing the STOP button. Only from this position (STATUS) in the initial view is it possible to try
to reset the alarm; if VASCO Solar does not reset the alarm it is displayed again together an audible sound.
ALARM MESSAGE
ALARM DESCRIPTION
POSSIBILE SOLUTIONS
OVERCURRENT MOT.
Motor overload: input current of the
motor is higher than the rated motor
current setting parameter.
Motor voltage drop caused by the inverter
causes the motor input current to be
higher than rated. Contact motor
manufacturer to check if motor is capable
of accepting this current.
Make sure that the motor current setting
parameter is higher than rated.
Check other possible causes of over current
UNDER VOLTAGE
Supply voltage too low
Check possible causes of undervoltage
OVER VOLTAGE
Supply voltage too high
Check possible causes of overvoltage
OVER TEMP. INV.
Inverter over temperature
Make sure than ambient temperature is
less than 40 °C (104 °F).
Check if auxiliary cooling fan is working
properly and if mounting space is adequate
for proper cooling.
Reduce the PWM value (Advance
Parameter Menu)
NO LOAD
No load
Check if load is properly connected to the
VASCO Solar terminals
NO WATER
(DRY RUN COSPHI)
Motor cosphi is lower than the set value of
dry running cosphi
Check if the pump is primed
Check the set value of dry running cosphi.
Dry running cosphi is approximately 60% of
the rated cosphi (at rated frequency) listed
on the motor plate.
If pump’s cosphi is lower than the set dryrunning cosphi for at least 2 seconds, VASCO
Solar stops the pump. VASCO Solar tries to run
the pump every 10, 20, 40, 80, 160 minutes
and then the pump is stopped.
WARNING: if dry running protection occurs,
VASCO Solar will try to start the pump
automatically. Be sure to cut power supply to
Offset input 4
x = XX.X [%]
Change PASSWORD2
ENT
26
VASCO Solar before performing any
maintenance.
SENSOR FAULT
Sensor error
Check the transducer
Check the wiring of transducer
MAX. VALUE ALARM
Measured value has reached the maximum
value accepted by the system.
Check possible causes of reaching max
value
Check the max alarm value setting
MIN. VALUE ALARM
Measured value has reached the lowest
value accepted by the system.
Check possible causes reaching min value
(i.e. broken pipe, open pressure relief valve,
etc.)
Check the min alarm value setting.
IGBT TRIP ALARM
The current drawn by the load exceeds the
capacity of VASCO Solar.
VASCO Solar is still able to continue to
power the load for 10 minutes with an
output current of 101% of nominal and for
1 minute with an output current of 110%
of nominal
Increase the ramp-up time
Make sure that the load current is at least
10% below the VASCO Solar nominal
current
Check the voltage drop along the supply
cable to the motor
NO
COMMUNICATION
Communication between Master and
slave(s) has been interrupted
Check the wiring connections
Make sure the Master is not in the Menu
level; if so, exit from the level.
In the STATUS of the slave (where the alarm
is displayed) try to reset the alarm by
pushing STOP button.
ADDRESS ERROR
Same address as other VASCO Solars in the
group
The address of each VASCO Solar needs to
be different
KEYBOARD FAULT
A Button on the keyboard has been
pressed for more than 150 seconds
Make sure buttons are not depressed
Call service assistance
ACTIVE DIG.IN.X
Digital input X opened /closed
Check the input digital configuration
(Installer Parameters menu )
ALARM SLAVE XX
slave XX error detected by master
check the status of the slave
If pumps cosphi is lower than the dry-running cosphi for at least 2 seconds, VASCO Solar will
stop the pump. VASCO Solar will try to run the pump every 10, 20, 40, 80, 160 minutes and
then the pump is stopped.
ATTENTION: if dry-running protection occurs, VASCO Solar will try to start the pump
automatically. Be sure to cut power supply before attempting maintenance
VASCO Solar will stop the pump if the input motor current is higher than the set motor
current for an extended time. By pressing the START button it is possible to run the pump
again.
VASCO Solar will stop the pump if the input voltage is higher than the set voltage for an
extended time. By pressing the START button it is possible to run the pump again. VASCO
Solar will stop the pump if the input voltage is lower than the set voltage for an extended
time. By pressing the START button it is possible to run the pump again.
27
DECLARATION OF CONFORMITY
In according with:
Machine Directive 2006/42/EC
EMC Directive 2004/108/CE
Low Voltage Directive 2006/95/CE
R&TTE Directive 1999/05/EU
VASCO Solar is an electronic device to be connected to other electrical equipment with which it is to form individual units. It
must, therefore, that the putting into service of this unit (with all its subsidiary equipments) to be performed by qualified
personnel.
The product conforms to the following regulations:
EN61800-3
EN 61800-6-1
EN 61000-6-3
EN 61000-4-2
EN 61000-4-3
EN 61000-4-4
EN 61000-4-5
EN 61000-4-6
EN 50178
EN 60204-1
Ing. Marco Nassuato
Operation Manager
28
NOTE
Copyright NASTEC srl
Nastec reserves the right to modify without previous notice any technical information contained in this document .
Nastec srl, Via della Tecnica, 8, 36024, Mossano, Vicenza, Italy, Tel. +39 0444 886289, Fax +39 0444 776099, www.nastec.eu,
info@nastec.eu
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