Danfoss vlt FC 102 Programming Guide

22-26 Dry Pump Function
Select the action for dry-pump operation.
Option: Function:
or a serial communication bus can
communicate a warning to other
equipment.
[2] Alarm 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.
[3] Man. Reset
Alarm
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.
[4] Stop and Trip
22-27 Dry Pump Delay
Range: Function:
10 s* [0 - 600 s] Denes for how long the dry-pump
condition must be active before
activating a warning or an alarm.
The frequency converter waits for
the no-ow delay time
(parameter 22-24 No-Flow Delay) to
expire before the timer for the dry-
pump delay starts.
3.20.2 22-3* No-ow 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 ow.
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 Parameter 16-10 Power [kW].
Or
4b Parameter 16-11 Power [hp] in the Main
Menu.
Note the power readout.
5. Change speed to approximately 50% of rated
speed. Note the exact speed.
6. 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.
7. Program the speeds used in:
7a Parameter 22-32 Low Speed [RPM].
7b Parameter 22-33 Low Speed [Hz].
7c Parameter 22-36 High Speed [RPM].
7d Parameter 22-37 High Speed [Hz].
8. Program the associated power values in:
8a Parameter 22-34 Low Speed Power [kW].
8b Parameter 22-35 Low Speed Power [HP].
8c Parameter 22-38 High Speed Power [kW].
8d Parameter 22-39 High Speed Power [HP].
9. Switch back with [Auto On] or [O].
22-30 No-Flow Power
Range: Function:
0 kW* [0 - 0 kW] Readout of calculated no-ow
power at actual speed. If power
drops to the display value, the
frequency converter considers the
condition as a no-ow situation.
22-31 Power Correction Factor
Range: Function:
100 %* [1 - 400 %] Make corrections to the calculated
power in parameter 22-30 No-Flow
Power.
If no-ow is detected when it
should not be detected, decrease
the setting. However, if no-ow is
not detected when it should be
detected, increase the setting to
above 100%.
Parameter Descriptions
VLT
®
HVAC Drive FC 102
202 Danfoss A/S © 10/2019 All rights reserved. M0010001
33

Danfoss vlt FC 102 Specifications

General

Brand	Danfoss
Model	vlt FC 102
Category	DC Drives
Language	English