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The VASCO Variable Speed Controller is a device designed to manage the running speed of a pump in a way that adapts to changing water demands. It is suitable for various pumping systems, including those with single-phase PSC motors, three-phase asynchronous motors, and permanent magnet synchronous motors. The device ensures energy savings and improved reliability by optimizing pump operation.
The VASCO controller operates by adjusting the motor frequency to maintain a constant pressure or flow, depending on the selected control mode. It can be used in single-pump systems or in COMBO mode, where it manages multiple pumps (up to 8) connected to an inverter. In COMBO mode, one inverter acts as a master, and others as slaves, communicating via RS485 serial port. The device features an initial set-up wizard for quick and complete programming, allowing users to define parameters related to the pump and system. It also includes an automatic master replacement function to ensure continuous operation in case of a master failure.
The controller supports various input and output configurations. Analog inputs (AN1, AN2, AN3, AN4) can be configured for 4-20 mA or 0-10 V sensors, allowing for pressure, flow, or other process variable measurements. Digital inputs (IN1, IN2, IN3, IN4) can be set as Normally Open (N.O.) or Normally Closed (N.C.) to control motor start/stop, alarm reset, or select operating modes/sensors. Relay outputs (NO1, NC1, NO2, NC2, NO3, NC3, NO4, NC4) provide potential-free contacts for alarms, status indications, or DOL (Direct On Line) pump control.
The device is available in different models (V209, V214, V218, V225, V306, V309, V314, V318, V325, V330, V338, V348, V365, V375, V385, V406, V409, V414, V415, V418, V4215, V4218, V4268) with varying input voltages (1x230 VAC, 3x230 VAC, 3x380-460 VAC) and maximum output currents (from 9 A to 270 A). Maximum efficiency is typically 95-98%. The maximum output frequency can range from 100 Hz to 500 Hz, with a minimum frequency of 30 Hz.
The enclosure provides IP55 (NEMA 4) or IP54 (NEMA 12) protection, depending on the size, ensuring resistance to dust and water jets. It can operate in ambient temperatures from -10°C (14°F) to 60°C (140°F), with derating above 40°C (104°F). Maximum altitude for nominal load is 1000m (3280 ft), with derating above this. The device is designed for electromagnetic compatibility (EMC) according to EN61800-3 standards.
The VASCO controller can be operated via a local keyboard and display or remotely using the Nastec NOW smartphone/tablet app via Bluetooth BTLE connectivity. The app allows for monitoring multiple operating parameters, obtaining energy consumption statistics, checking alarm history, generating reports, creating schedules, and remote control via Wi-Fi or GSM.
The initial set-up process guides the user through essential programming steps, including pump type, motor type, rated motor current, and pressure sensor settings. The device suggests default values, which can be modified using the scroll keys and ENTER button. The control mode can be set to Constant Value, Fixed Speed, Fixed Speed 2set, or External Speed.
For electrical connections, specific cable types and cross-sections are recommended for power, motor, and control cables. Shielded cables are advised for control cables and motor cables to ensure EMC. Proper grounding is crucial for safety and optimal performance. The manual provides detailed wiring diagrams and tables for pre-insulated cable lugs and tightening torques.
Regular maintenance is essential for the longevity and reliable operation of the VASCO controller. The maintenance schedule includes checks for proper cooling, correct tightening of power terminals, and verification of the protection rating (ingress of dust or water). These checks should be performed every 6 or 12 months, or following a temperature alarm.
The device includes a warranty that covers material or workmanship defects for 24 months from the date of installation. The warranty is voided if the device is used for purposes other than those for which it was designed, or if it has been installed by unqualified personnel.
The controller features an alarm system that provides acoustic signals and visual indications on the display. Alarms can be reset by pressing the STOP key. The manual lists various alarms (e.g., A01 OVERCURRENT MOT, A02 SENSOR FAULT, A03 OVER TEMP. INV, A08 LOCKED ROTOR, W26 NO WATER) with their descriptions and possible solutions, such as checking connections, verifying power supply, or ensuring proper pump priming.
The electronic water shortage protection, based on the motor's power factor (cosphi), is effective for centrifugal pumps with three-phase asynchronous motors. For permanent magnet motors, protection is based on absorbed power. The parameter "Dry run cosphi" can be adjusted to optimize this protection, with recommendations provided for typical pump types. Setting this parameter to 0 completely disables the water shortage protection.
General| Brand | Nastec |
|---|---|
| Model | ANDO VASCO |
| Category | Controller |
| Language | English |
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