vacon • 6 Preface
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1. PREFACE
The VACON
®
AC drive contains a preloaded VACON
®
100 Solar Pump application for instant use.
1.1 Specific functions of VACON
®
Solar pump application
The VACON
®
100 Solar Pump application allows flexible use of VACON
®
100 frequency converters.
This dedicated application software was developed to drive a solar pump with an optimized MPPT
(Maximum Power Point Tracking) for VACON
®
100 supplied by solar panels.
The MPPT is based on 4 parallel algorithms:
• Feed-Forward Controller (to follow the radiation variations)
• Correction Controller (to compensate the temperature variations)
• Oscillation Damping Regulator (to prevent the panel entering in the “current source” branch
of the characteristic)
• Local Maxima logic (to prevent the regulator from being trapped in a local maximum lower
than absolute maximum)
Features
• The MPP Tracker controls DC voltage reference in order to find the maximum power.
• Extensive wizards for start-up, PID-control used to facilitate commissioning
• ‘Funct’ button for easy change between Local (keypad) and Remote control place. The
remote control place is selectable by parameter (I/O or Fieldbus)
• 8 preset frequencies
• Motor potentiometer functions
•2 programmable ramp times, 2 supervisions and 3 ranges of prohibited frequencies
• Control page for easy operation and monitoring of the most essential values.
• Fieldbus data mapping
•Automatic reset
•Different pre-heat modes used to avoid condensation problems
• Maximum output frequency 320 Hz
• Real-time clock and timer functions available (optional battery required). Possible to pro-
gram 3 time channels to achieve different functions on the drive (e.g. Start/Stop and Preset
frequencies)
• External PID-controller available. Can be used to control e.g. a valve using the AC drive I/O
• Sleep mode function which automatically enables and disables drive running with user
defined levels to save energy.
• 2-zone PID-controller (2 different feedback signals; minimum and maximum control)
• Two setpoint sources for the PID-control. Selectable with digital input
• PID setpoint boost function
• Feedforward function to improve the response to the process changes
• Process value supervision
• Maintenance counter
• Underload protection can be managed by measuring Motor torque (standard sensorless
mode) or by measuring the water flow with a flow meter sensor. This sensor can be an ana-
logue signal or a digital input. With this sensor it is possible to measure the water flow
[litres/min] and the total volume of the water flow [m
3
].
• Sleep mode can be enabled or disabled with a parameter.
• Digital inputs can be used to measure water levels (minimum and maximum).
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