Danfoss VLT Flow Drive FC 111 Design Guide

3 Product Overview
3.1 Advantages
3.1.1 Why Use a Drive for Controlling Fans and Pumps?
A drive takes advantage of the fact that centrifugal fans and pumps follow the laws of proportionality for such fans and pumps. For
further information, see 3.1.1.2 Example of Energy Savings.
3.1.1.1 The Clear Advantage - Energy Savings
The clear advantage of using a drive for controlling the speed of fans or pumps lies in the electricity savings.
When comparing with alternative control systems and technologies, a drive is the optimum energy control system for controlling
fan and pump systems.
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SYSTEM CURVE
FAN CURVE
PRESSURE%
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C
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VOLUME%
Illustration 1: Fan Curves (A, B, and C) for Reduced Fan Volumes
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Volume %
Volume %
INPUT POWER % PRESSURE %
SYSTEM CURVE
FAN CURVE
A
B
C
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ENERGY
CONSUMED
Illustration 2: Energy Savings with Drive Solution
AJ363928382091en-000101 / 130R098314 | Danfoss A/S © 2021.04
Product Overview
VLT® Flow Drive FC 111
Design Guide

Danfoss VLT Flow Drive FC 111 Specifications

General

Brand	Danfoss
Model	VLT Flow Drive FC 111
Category	DC Drives
Language	English