Danfoss VLT HVAC Operating Instructions Manual page 82

6. How to programme the frequency converter
Up
, Par. 22-20) in order to use Dry Pump
Detection.
Warning: Messages in the Local Control Panel
display (if mounted) and/or signal via a relay
or a digital output.
Alarm: The frequency converter trips and mo-
tor stays stopped until reset.
22-40
Value:
0 - 600 s
Function:
Set the desired minimum running time for the
6
motor after a Start command (digital input or
Bus) before entering Sleep Mode.
22-41
Value:
0 - 600 s
Function:
Set the desired minimum time for staying in
Sleep Mode. This will override any wake up
conditions.
22-42
Value:
par. 4-11 (Motor Speed Low Limit) - Par.
4-13 (Motor Speed High Limit)
Function:
To be used if par. 0-02,
been set for RPM (parameter not visible if Hz
selected). Only to be used if par. 1-00,
figuration Mode
speed reference is applied by an external con-
troller.
Set the reference speed at which the Sleep
Mode should be cancelled.
22-60
Value:
Disabled
Warning
82
Minimum Run Time
Minimum Sleep Time
Wake-Up Speed [RPM]
Motor Speed Unit
, is set for Open Loop and
Broken Belt Function
MG.11.A4.02 - 09.10.06. VLT
®
VLT
Trip
Function:
Selects the action to be performed if the Bro-
ken Belt condition is detected
22-61 Broken Belt Torque
Value:
0 - 100%
Function:
10 s
Sets the broken belt torque as a percentage
of the rated motor torque.
22-62 Broken Belt Delay
Value:
0 - 600 s
Function:
Sets the time for which the Broken Belt con-
10 s
ditions must be active before carrying out the
action selected in
22-60.
22-75 Short Cycle Protection
Value:
Disabled
Enabled
Function:
Disabled [0]: Timer set in
, has
Starts
, par. 22-76 is disabled.
Enabled
[1]: Timer set in
Con-
Starts
, par. 22-76 is enabled.
22-76 Interval Between Starts
Value:
0 - 3600 s
Function:
Sets the time desired as minimum time be-
tween two starts. Any normal start command
(Start/Jog/Freeze) will be disregarded until
[0]
the timer has expired.
[1]
® is a registered Danfoss trademark
HVAC Drive Operating Instructions
[2]
10%
10 s
Broken Belt Function
, par.
[0]
[1]
Interval Between
Interval between
0 s