Danfoss VLT HVAC Drive FC 102 Kurulum Talimatları Kılavuzu - Sayfa 7

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Danfoss VLT HVAC Drive FC 102 Kurulum Talimatları Kılavuzu
Installation Instructions

Parameter Configuration

After PTU 025 is installed, power up the frequency converter.
The LCP shows alarm A80, Drive initialized, which indicates that
the frequency converter detected the new device. Press [Reset]
to reset the alarm.
Illustration 1.8 Alarm A80, Drive Initialized
Use the LCP or MCT 10 Set-up Software to configure PTU 025.
The PTU 025 option can be configured for the following
purposes:
•
Monitoring of the pressure transmitter signals.
•
Showing the readouts on the LCP or transmitting
them via the fieldbus.
•
Integration of the pressure monitoring into a system
solution.
•
PID closed-loop control based on airflow or pressure
levels.
Signals from all PTU 025 sensors are active all the time and
the frequency converter can show the values on the LCP
continuously. Use parameters in parameter group 31-2*
Readouts to monitor filters, airflow, and pressure levels on the
LCP or configure warnings or alarms. Values in parameter
group 31-2* Readouts are also available via the fieldbus.
MCT 10 Set-up Software and the frequency converter check
whether the entered pressure values are within the operating
ranges of sensors. The LCP shows a warning if the entered
pressure value is outside the operating range.
Use parameter 31-30 Press Sens Cmp State in the smart logic
control to achieve application-specific functionality. Use
parameters in parameter group 13-9* User-defined Alerts and
Readouts to configure application-specific messages, warnings,
and alarms. For more information, see the programming guide.
MI08A102
Pressure Transmitter Unit PTU 025
®
VLT
HVAC Drive FC 102
31-** Pressure Sensor Option
Parameters related to the PTU 025 option.
31-2* Configuration
Each pressure-related status has its own below-level and
above-level trigger thresholds. The thresholds can be activated
individually. When the actual pressure level exceeds the
threshold level, the frequency converter waits for the value in
parameter 31-23 On Delay Time, and then performs a status
change of a status. When the actual pressure goes below the
threshold level, the value in parameter 31-24 Reset Delay Time
defines when the status is reset. The value in
parameter 31-25 Pressure filter time constant adjusts the
dynamic of the reaction to the actual pressure input, to ensure
reliable and stable status generation.
31-20 Pressure/Speed Curve
Select the type of the pressure/speed curve.
Each pressure sensor can have a different setting.
For options [1] Linear and [2] Square root, the pressure threshold
at 0 speed equals 10% of the value entered in
parameter 31-21 Below level threshold or parameter 31-22 Above
level threshold.See Illustration 1.9.
Illustration 1.9 Pressure/Speed Dependency
Option:
[0]
*
[1]
[2]
31-21 Below level threshold
Range:
#
[ -2500 - 2500 Pa]
*
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Function:
None
The pressure threshold is
constant and does not
depend on speed.
Linear
The pressure threshold is
proportional to the speed.
Square root
The pressure threshold
depends on the speed.
The dependency is
quadratic.
Function:
Enter the below-level threshold.
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