grid inverter
VASCO - VAriable Speed COntroller is a purpose-built family of variable frequency drives, designed to control and protect pumping systems based on changing pump speed.
The Vasco is a robust, high-performance inverter tailored for larger pumps and more complex grid applications. It offers precise speed control, efficiency monitoring, and comprehensive system protection.
Product Features
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With VASCO – VAriable Speed COntroller inverters is possible to realise booster sets with one or more pumps (up to 8) to be controlled at constant pressure.
The device can be mounted directly on the motor fan cover with a specific kit. The extreme strength of the connection allows its installation even on horizontal pumps.
Screen display can be easily rotated to optimise the parameter view.
Motor mounting – besides the compactness and the saving of additional control panels and wiring – guarantees very good cooling of the inverter and low electromagnetic emissions due to the reduced length of the motor cable.
IP55 protection allows installation in humid and dusty environments.
If device cannot be installed on the motor fan cover, it is possible to secure it to the wall with an optional kit composed by a cooling fan fed by itself and a metal wall bracket.
IP 55 protection does not require including the device drive in any additional control box so the device can be installed very near the pump.
COMBO mode control allows to switch the starting of pumps based on real working time and, in case of failure, the remaining pumps continue operation to always guarantee service.
Once the damaged unit is replaced, COMBO will preferably move the operation to the new pumps to equalise the running time.
1 device + 1 or 2 DOL pumps.
A first way of splitting consists of installing one pump driven by device and 1 or 2 DOL pumps directly connected to the main power (Direct On Line); device switches on/off the 1 or 2 DOL pumps through contactors.
Device alter-nates the two DOL pumps to average pump wearing.
From 1 to 8 devices in COMBO connection.
A second way of splitting (named COMBO) consists of using several pumps in parallel (up to 8) each one driven by a device unit.
In this way, efficiency and the reliability of the pump group is maximized.
Each device controls and protects its pump and the operation is shared among all the connected pumps to average pump wearing; in case of failure the remaining pumps will maintain the pumping operation.
From 1 to 8 connection + 1 or 2 DOL pumps.
Additionally it is possible to equip the system with pumps connected in COMBO mode plus 1 or 2 DOL pumps to satis-fy additional water demand.
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In addition to constant pressure control, VASCO – VAriable Speed COntroller allows other control modes such as fixed frequency, constant flow, constant temperature.
Constant pressure.
It controls the pump speed to maintain constant pressure at a set point independent of the water demand in the system.
In a hydraulic system equipped with the device, the standard pressure tank is replaced by a smaller tank which functions to maintain the set pressure in the system when the pump is stopped.
Constant pressure 2 values.
By selecting the constant pressure 2 values control mode, in irrigation systems, only one pump can serve two zones with different pressure sets. It is possible to switch the two values by acting on a digit input contact.
Fixed frequency 2 values.
If it is not necessary to operate at constant pressure but is required to select 2 different pump speeds, by selecting fixed frequency 2 values control mode it is possible to switch the 2 values by acting on a digit input contact.
Constant temperature.
The control method at constant temperature is used to maintain the temperature of the pumped fluid to vary the thermal load. This control system is used in air conditioning or refrigeration and cooling towers. In this latter case, for example, the temperature measured by a sensor in the return water is kept constant.
External frequency.
In some application, it is chosen to change the frequency of the pump by using an external signal coming from a trimmer or a PLC. In this case, after selecting the External Frequency control mode, it is enough to connect an input signal 4-20 mA or 0-10V, proportional to the desired frequency, to the AN4 analogue contact.
Constant flow.
By selecting the constant flow control mode and using a flow transducer, it is possible to control the flow of the pumped liquid to vary the system condition.
This control mode is used, for example, in a system for filtering the pumped fluid in which the obstruction of the filter would lead to a progressive reduction of the flow rate if it is not compensated by an increasing of the pump speed.
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Submersible pumps of various powers can be managed by VASCO – VAriable Speed COntroller.
Sometimes it is necessary to install a filter between pump and inverter to:
reduce the spikes on the motor coils caused by voltage reflection (dv/dt filters)
avoid electromagnetic noise in the surrounding environment (sinusoidal filters).
It is recommended to keep the motor cable separate from other cables, maintaining a certain distance. Nastec can provide filters and shielded cables for proper pump installation.
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Field Oriented Control (FOC) with motor autotuning.
Control of next-generation asynchronous motors, both three-phase and single-phase.
Sensorless control of permanent magnet synchronous motors.
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Remote control via wifi or gsm
In addition to Bluetooth connectivity for control through a smartphone and app, it is possible to install a Wifi or GSM card onboard the device and manage the system remotely through the remo.nastec.eu portal. Therefore, there is no need to install any external communication device or subscribe to expensive telemetry services.
Predictive analysis and remote control
Through predictive analysis performed by the device during operation, it is possible to intervene before a problem occurs, minimizing intervention and repair costs. If the device is connected to the Internet, warning or alarm notifications can be sent via email to the concerned users. For this purpose, a quick configuration from the remo.nastec.eu portal is sufficient.
Modbus rtu and bacnet connectivity as standard
The device can be connected via the RS485 serial port to external control systems using the MODBUS RTU and BACnet protocols.
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In addition to protecting the motor from overvoltages and overloads, the inverter is capable of automatically adapting its performance to power and environmental conditions. This means that if the ambient temperature or the current absorbed by the motor were to reach the allowed limits, the inverter will automatically limit the motor frequency, ensuring the continuity of operation.
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Changing certain parameters often requires the adjustment of others to ensure the proper functioning of the system. However, it is not always easy to know or remember the existing relationships between all parameters. For this purpose, the device is capable of automatically adjusting secondary parameters based on primary parameters, preventing users from overlooking important details.
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In addition to alarms, which result in motor shutdown, the device notifies the user of possible malfunctions and, where possible and if desired, implements automatic corrections to motor control to prevent system downtime. Both alarms and warnings are stored in the device’s history for easy reference over time.
THE INSTALLATION
IS SIMPLE AND INTUITIVE
Installing VASCO – VAriable Speed COntroller is simple and intuitive, requiring just a few quick steps
Connect device to the power supply.
Connect device to the pump.
Connect device to the sensor, located wherever in the piping you want to maintain the desired constant physical dimension (pressure, flow, liquid temperature, etc.)
Set device to configure the pump to the system and the desired performance.
When first powering the device, a quick initial wizard is required for complete configuration of the drive. Additional parameters can be configured later by entering three different setting levels:
End user level. The only level which can be accessed without a password. It allows the user to monitor electrical and hydraulic parameters and the status of device and pump.
Installer level. In this level the installer can configure pump system to the characteristics of the hydraulic system. A password is required.
Advanced level. This level allows the electrical configuration of device according to the pump. Another password is required.
Motor kit
It is cooled by the motor cooling fan. Motor kit consists of 4 special clamps (or flange adapter) to secure the device to the motor fan cover (or motor feet).
Wall kit
It is cooled by an external cooling fan attached to the inverter radiator. A special metal bracket is supplied for device to be mounted on the wall.
Technical Specifications
| Model | Vin ± 15% | Max V out | Max I out | P2 motor power* | Size |
|---|---|---|---|---|---|
| VAC | VAC | A | kW | ||
| V209 | 1 x 230 | 1 x Vin | 9 | 1,1 | 1 |
| 3 x Vin | 7 | 1,5 | 1 | ||
| V214 | 1 x 230 | 1 x Vin | 9 | 1,1 | 1 |
| 3 x Vin | 11 | 3 | 1 | ||
| V218 | 1 x 230 | 3 x Vin | 18 | 4 | 2 |
| V225 | 1 x 230 | 3 x Vin | 25 | 5,5 | 2 |
| V306 | 3 x 230 | 3 x Vin | 6 | 1,1 | 1 |
| V309 | 3 x 230 | 3 x Vin | 9 | 2,2 | 1 |
| V314 | 3 x 230 | 3 x Vin | 14 | 3 | 2 |
| V318 | 3 x 230 | 3 x Vin | 18 | 4 | 2 |
| V325 | 3 x 230 | 3 x Vin | 25 | 5,5 | 2 |
| V330 | 3 x 230 | 3 x Vin | 30 | 7,5 | 2 |
| V338 | 3 x 230 | 3 x Vin | 38 | 9,3 | 3 |
| V348 | 3 x 230 | 3 x Vin | 48 | 11 | 3 |
| V365 | 3 x 230 | 3 x Vin | 65 | 15 | 3 |
| V375 | 3 x 230 | 3 x Vin | 75 | 18,5 | 3 |
| V385 | 3 x 230 | 3 x Vin | 85 | 22 | 3 |
| V3118 | 3 x 230 | 3 x Vin | 118 | 30 | 3 |
| V3158 | 3 x 230 | 3 x Vin | 158 | 37 | 4 |
| V3185 | 3 x 230 | 3 x Vin | 185 | 45 | 4 |
| V3215 | 3 x 230 | 3 x Vin | 215 | 55 | 4 |
| V3268 | 3 x 230 | 3 x Vin | 268 | 75 | 4 |
| V406 | 3 x 380-460 | 3 x Vin | 6 | 2,2 | 1 |
| V409 | 3 x 380-460 | 3 x Vin | 9 | 4 | 1 |
| V414 | 3 x 380-460 | 3 x Vin | 14 | 5,5 | 2 |
| V418 | 3 x 380-460 | 3 x Vin | 18 | 7,5 | 2 |
| V425 | 3 x 380-460 | 3 x Vin | 25 | 11 | 2 |
| V430 | 3 x 380-460 | 3 x Vin | 30 | 15 | 2 |
| V438 | 3 x 380-460 | 3 x Vin | 38 | 18,5 | 3 |
| V448 | 3 x 380-460 | 3 x Vin | 48 | 22 | 3 |
| V465 | 3 x 380-460 | 3 x Vin | 65 | 30 | 3 |
| V475 | 3 x 380-460 | 3 x Vin | 75 | 37 | 3 |
| V485 | 3 x 380-460 | 3 x Vin | 85 | 45 | 3 |
| V4118 | 3 x 380-460 | 3 x Vin | 118 | 55 | 3 |
| V4158 | 3 x 380-460 | 3 x Vin | 158 | 75 | 4 |
| V4185 | 3 x 380-460 | 3 x Vin | 185 | 90 | 4 |
| V4215 | 3 x 380-460 | 3 x Vin | 215 | 110 | 4 |
| V4268 | 3 x 380-460 | 3 x Vin | 268 | 132 | 4 |
