vacon • 6
Preface
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
1.
P
REFACE
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).