EXAMPLE 2:
Variable= FEEDBACK, range= -200% to +200%
Range needed for output= 0–100%
Output signal 0 or 4 mA is needed at 0% (50% of range) -
set
parameter 6-51 Terminal 42 Output Min Scale
to 50%
Output signal 20 mA is needed at 100% (75% of range) -
set
parameter 6-52 Terminal 42 Output Max Scale
to 75%
0/4 mA
20 mA
50%
75%
100%
0%
0%
+100%
+200%
-200%
130BA856.10
Figure 6.15
EXAMPLE 3:
Variable value= REFERENCE, range= Min ref - Max ref
Range needed for output= Min ref (0%) - Max ref (100%),
0–10 mA
Output signal 0 or 4 mA is needed at Min ref - set
parameter 6-51 Terminal 42 Output Min Scale
to 0%
Output signal 10 mA is needed at Max ref (100% of range)
- set
parameter 6-52 Terminal 42 Output Max Scale
to 200%
(20 mA/10 mA x 100%=200%).
20 mA
10 mA
0/4 mA
100%
200%
0%
Max ref
Max ref X 20/10
Min ref
130BA857.10
Figure 6.16
14-01 Switching Frequency
Option:
Function:
Select the inverter switching frequency. Changing
the switching frequency can help reduce acoustic
noise from the motor.
NOTICE!
The output frequency value of the
adjustable frequency drive must never
exceed 1/10 of the switching frequency.
When the motor is running, adjust the
switching frequency in
parameter 14-01 Switching Frequency
until
the motor is as noiseless as possible. See
also
parameter 14-00 Switching Pattern
and
the section
Derating
in the relevant
design
guide
.
[0]
1.0 kHz
[1]
1.5 kHz
[2]
2.0 kHz
[3]
2.5 kHz
[4]
3.0 kHz
[5]
3.5 kHz
[6]
4.0 kHz
[7]
5.0 kHz
[8]
6.0 kHz
[9]
7.0 kHz
[10] 8.0 kHz
[11] 10.0 kHz
[12] 12.0 kHz
[13] 14.0 kHz
[14] 16.0 kHz
20-00 Feedback 1 Source
Option:
Function:
Up to three different feedback
signals can be used to provide the
feedback signal for the adjustable
frequency drive’s PID controller.
This parameter defines which input
is used as the source of the first
feedback signal.
Analog input X30/11 and analog
input X30/12 refer to inputs on the
optional general purpose I/O board.
[0]
No function
[1]
Analog Input 53
[2]
*
Analog Input 54
[3]
Pulse input 29
[4]
Pulse input 33
[7]
Analog input X30/11
[8]
Analog input X30/12
How to Program
Instruction Manual
MG11F522
Danfoss A/S © 08/2014 All rights reserved.
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Содержание VLT HVAC Drive FC 102
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