Flow Power Tuning - Danfoss VLT FC 102 Programming Manual

Parameter Descriptions
22-26 Dry Pump Function
Select the action for dry-pump operation.
Option:
3 3
[2] Alarm
[3] Man. Reset
Alarm
[4] Stop and Trip
22-27 Dry Pump Delay
Range:
10 s
*
3.20.2 22-3* No-flow Power Tuning
NOTICE
Set parameter 1-03 Torque Characteristics before tuning
takes place.
If auto set-up is disabled in parameter 22-20 Low Power
Auto Set-up, the tuning sequence is:
1. Close the main valve to stop flow.
2. Run with motor until the system has reached
normal operating temperature.
3. Press [Hand On] and adjust speed for approxi-
mately 85% of rated speed. Note the exact speed.
4. Read power consumption either by looking for
actual power in the data line in the LCP or by
viewing 1 of the following parameters:
4a
202
Function:
or a serial communication bus can
communicate a warning to other
equipment.
The frequency converter stops
running and activates a dry-pump
alarm (alarm 93, Dry pump). A
frequency converter digital output
or a serial communication bus can
communicate an alarm to other
equipment.
The frequency converter stops
running and activates a dry-pump
alarm (alarm 93, Dry pump). A
frequency converter digital output
or a serial communication bus can
communicate an alarm to other
equipment.
Function:
[0 - 600 s] Defines for how long the dry-pump
condition must be active before
activating a warning or an alarm.
The frequency converter waits for
the no-flow delay time
(parameter 22-24 No-Flow Delay) to
expire before the timer for the dry-
pump delay starts.
Parameter 16-10 Power [kW].
Danfoss A/S © 10/2019 All rights reserved.
®
VLT HVAC Drive FC 102
5.
6.
7.
8.
9.
22-30 No-Flow Power
Range:
0 kW
*
22-31 Power Correction Factor
Range:
100 %
*
Or
4b Parameter 16-11 Power [hp] in the Main
Menu.
Note the power readout.
Change speed to approximately 50% of rated
speed. Note the exact speed.
Read power consumption either by looking for
actual power in the data line in the LCP or by
viewing 1 of the following parameters:
6a Parameter 16-10 Power [kW].
Or
6b Parameter 16-11 Power [hp] in the Main
Menu.
Note the power readout.
Program the speeds used in:
7a Parameter 22-32 Low Speed [RPM].
Parameter 22-33 Low Speed [Hz].
7b
7c Parameter 22-36 High Speed [RPM].
7d Parameter 22-37 High Speed [Hz].
Program the associated power values in:
8a Parameter 22-34 Low Speed Power [kW].
8b Parameter 22-35 Low Speed Power [HP].
Parameter 22-38 High Speed Power [kW].
8c
8d Parameter 22-39 High Speed Power [HP].
Switch back with [Auto On] or [Off].
Function:
[0 - 0 kW] Readout of calculated no-flow
power at actual speed. If power
drops to the display value, the
frequency converter considers the
condition as a no-flow situation.
Function:
[1 - 400 %] Make corrections to the calculated
power in parameter 22-30 No-Flow
Power.
If no-flow is detected when it
should not be detected, decrease
the setting. However, if no-flow is
not detected when it should be
detected, increase the setting to
above 100%.
M0010001