Danfoss PTU 025 Instruction Manual

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 20/10Min 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 dierent feedback
signals can be used to provide the
feedback signal for the adjustable
frequency drive’s PID controller.
This parameter denes which input
is used as the source of the rst
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
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Danfoss PTU 025 Specifications

General

Brand	Danfoss
Model	PTU 025
Category	DC Drives
Language	English