Danfoss VLT Automation VT Drive FC 322 Programming Manual page 216

2 Parameter Description
22-23 No-Flow Function
Option:
2
[0] * Off
[1] Sleep Mode
[2] Warning
[3] Alarm
22-24 No-Flow Delay
Range:
10 s* [1 - 600 s]
22-26 Dry Pump Function
Option:
[0] * Off
[1] Warning
[2] Alarm
[3] Manual Reset Alarm
22-27 Dry Pump Delay
Range:
10 s* [0 - 600 s]
22-28 No-Flow Low Speed [RPM]
Range:
0* [Motor Min. Speed - Motor Max.
Speed]
22-29 No-Flow Low Speed [Hz]
Range:
0* [Motor Min. Speed - Motor Max.
Speed]
2.19.3 22-3* No-Flow Power Tuning
Tuning Sequence, if not choosing
1. Close the main valve to stop flow
2. Run with motor until the system has reached normal operating temperature
214
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Function:
Common actions for Low Power Detection and Low Speed Detection (Individual selections not pos-
sible).
Messages in the Local Control Panel display (if mounted) and/or signal via a relay or a digital output.
The frequency converter trips and motor stays stopped until reset.
Function:
Set the time Low Power/Low Speed must stay detected to activate signal for actions. If detection
disappears before run out of the timer, the timer will be reset.
Function:
Low Power Detection
either par. 22-3*, No Flow Power Tuning
Pump Detection.
Messages in the Local Control Panel display (if mounted) and/or signal via a relay or a digital output.
The frequency converter trips and motor stays stopped until reset.
Function:
Defines for how long the Dry Pump condition must be active before activating Warning or Alarm
Function:
Used to set the speed for no-flow low speed detection.
If a low speed detection at a speed different from the motor minimum speed is needed, this pa-
rameter may be used.
Function:
Used to set the speed for no-flow low speed detection.
If a low speed detection at a speed different from the motor minimum speed is needed, this pa-
rameter may be used.
Auto Set Up in par. 22-20 Low Power Auto Set-up
MG.20.W1.22 - VLT is a registered Danfoss trademark
VLT Automation VT Drive FC322
Low Power Detection
must be Enabled (par. 22-21
, or par. 22-20 Low Power Auto Set-up
:
Programming Guide
) and commissioned (using
) in order to use Dry