About Frequency Converter Programming; Introduction; Programming Example - Danfoss VLT HVAC Operating Instructions Manual

About Frequency Converter P...

5 About Frequency Converter Programming

5.1 Introduction

The frequency converter is programmed for its application
functions using parameters. Parameters are accessed by
pressing either [Quick Menu] or [Main Menu] on the LCP.
(See 4 User Interface for details on using the LCP function
keys.) Parameters may also be accessed through a PC
using the MCT 10 Set-up Software (see 5.6 Remote
Programming with ).
The quick menu is intended for initial start up (Q2-** Quick
5 5
Set Up) and detailed instructions for common frequency
converter applications (Q3-** Function Set Up). Step-by-step
instructions are provided. These instructions enable the
user to walk through the parameters used for
programming applications in their proper sequence. Data
entered in a parameter can change the options available in
the parameters following that entry. The quick menu
presents easy guidelines for getting most systems up and
running.
The main menu accesses all parameters and allows for
advanced frequency converter applications.

5.2 Programming Example

Here is an example for programming the frequency
converter for a common application in open loop using
the quick menu.
•
This procedure programs the frequency converter
to receive a 0-10 V DC analog control signal on
input terminal 53
•
The frequency converter will respond by
providing 6-60 Hz output to the motor propor-
tional to the input signal (0-10 V DC = 6-60 Hz)
Select the following parameters using the navigation keys
to scroll to the titles and press [OK] after each action.
1. 3-15 Reference Resource 1
Illustration 5.1
34
®
VLT
14.7% 0.00A
References
3-15 Reference Resource
[1]] Analog input 53
MG11AH02 - VLT
HVAC Drive Operating Instructions
2. 3-02 Minimum Reference. Set minimum internal
frequency converter reference to 0Hz. (This sets
the minimum frequency converter speed at 0 Hz.)
Illustration 5.2
3. 3-03 Maximum Reference. Set maximum internal
frequency converter reference to 60 Hz. (This sets
the maximum frequency converter speed at 60
Hz. Note that 50/60 Hz is a regional variation.)
Illustration 5.3
4. 6-10 Terminal 53 Low Voltage. Set minimum
external voltage reference on Terminal 53 at 0 V.
(This sets the minimum input signal at 0 V.)
1(1)
Illustration 5.4
5-1*
®
is a registered Danfoss trademark
14.7% 0.00A
Analog Reference
3-02 Minimum Reference
0.000 Hz
14.7% 0.00A
Analog Reference
3-03 Maximum Reference
50.000 Hz
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Analog Reference
6-10 Terminal 53 Low
Voltage
0.00 V
1(1)
Q3-21
1(1)
Q3-21
1(1)
Q3-21