22-23 No-Flow Function
Option:
Function:
Common actions for Low Power Detection and Low Speed Detection (Individual selections not pos-
sible).
[0] *
Off
[1]
Sleep Mode
[2]
Warning
Messages in the Local Control Panel display (if mounted) and/or signal via a relay or a digital output.
[3]
Alarm
The frequency converter trips and motor stays stopped until reset.
22-24 No-Flow Delay
Range:
Function:
10 s*
[1 - 600 s]
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.
22-26 Dry Pump Function
Option:
Function:
Low Power Detection
must be Enabled (par. 22-21
Low Power Detection
) and commissioned (using
either par. 22-3*,
No Flow Power Tuning
, or par. 22-20
Low Power Auto Set-up
) in order to use Dry
Pump Detection.
[0] *
Off
[1]
Warning
Messages in the Local Control Panel display (if mounted) and/or signal via a relay or a digital output.
[2]
Alarm
The frequency converter trips and motor stays stopped until reset.
[3]
Manual Reset Alarm
22-27 Dry Pump Delay
Range:
Function:
10 s*
[0 - 600 s]
Defines for how long the Dry Pump condition must be active before activating Warning or Alarm
22-28 No-Flow Low Speed [RPM]
Range:
Function:
0*
[Motor Min. Speed - Motor Max.
Speed]
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.
22-29 No-Flow Low Speed [Hz]
Range:
Function:
0*
[Motor Min. Speed - Motor Max.
Speed]
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.
2.19.3 22-3* No-Flow Power Tuning
Tuning Sequence, if not choosing
Auto Set Up
in par. 22-20
Low Power Auto Set-up
:
1.
Close the main valve to stop flow
2.
Run with motor until the system has reached normal operating temperature
2 Parameter Description
VLT
p
Automation VT Drive FC322
Programming Guide
214
MG.20.W1.22 - VLT
p
is a registered Danfoss trademark
2
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http://www.remotesiteproducts.com/p-20772-Danfoss-131X8135-VLT-Automation-VT-Drive-VFD-FC322-230V-5-HP.aspx