Danfoss iC2 Application Manual page 245

Application Guide | iC2-Micro Frequency Converters
Default value:
0.000
Parameter
557
number:
Data type:
int32
P 9.4.4.5 T18 Pulse Filter Time Constant
Enter the pulse filter time constant. The low-pass filter reduces the influence on and dampens oscillations on the feedback signal from
the control. This is an advantage, for example, if there is a great amount on noise in the system.
Default value:
100
Parameter
559
number:
Data type:
uint16
Variable duty cycle pulse signal as input
The normal pulse input has fixed 50% duty cycle. To enable variable duty cycle pulse signal as the reference, the terminal 18 must be set
for variable duty cycle pulse signal as input. P 9.4.1.6 T18 Digital Input should be set as [46] Pulse PWM Input. The related parameters for
reference source P 5.5.3.x should be selected as [8] Frequency Input 18. The frequency range of pulse input is from 1 Hz to 1 kHz.
Parameter P 9.4.4.6 T18 PWM Polarity is for selecting the polarity of pulse input signal. Select [0] Positive for positive direction pulses.
Select [1] Negative for negative direction pulses. P 9.4.4.7 T18 High Duty is the duty cycle of pulse corresponding to the high reference
value in P 9.4.4.3 Term. 18 High Ref./Feedb. Value. P 9.4.4.8 T18 Low Duty is the duty cycle of pulse corresponding to the low reference
value in P 9.4.4.4 Term. 18 Low Ref./Feedb. Value.
P 9.4.4.6 T18 PWM Polarity
When setting the variable duty cycle pulse signal as the reference, use this parameter to select the activated PWM polarity. Select [0]
Positive, for positive direction pulses. Select [1] Negative, for negative direction pulses.
Default value:
0
Parameter
505
number:
Data type:
enum
Selection number
0
1
P 9.4.4.7 T18 High Duty
When setting variable duty cycle pulse signal as the reference, use this parameter to enter the pulse PWM input high duty (%) that
corresponds to the high reference value in P 9.4.4.3 Term. 18 High Ref./Feedb. Value.
Default value:
5000
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Parameter type:
Unit:
Access type:
Parameter type:
Unit:
Access type:
Parameter type:
Unit:
Access type:
Selection name
Positive
Negative
Parameter type:
AB413939445838en-000301 / 130R1254 |
Range (-4999.000–4999.000)
Hz
Read/Write
Range (1–1000)
ms
Read/Write
Selection
–
Read/Write
Range (100–10000)
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