VLT HVAC Drive High Power Operating In-
structions
22-41 Minimum Sleep Time
Range:
10 s*
[0 - 600 s]
22-42 Wake-up Speed [RPM]
Range:
Size
rela-
[ par. 4-11 - par. 4-13 RPM]
ted*
22-60 Broken Belt Function
Selects the action to be performed if the Broken Belt condition is detected
Option:
[0] *
Off
[1]
Warning
[2]
Trip
Do not set par. 14-20
auto reset, when par. 22-60
set to [2] Trip. Doing so will cause the drive to con-
tinuously cycle between running and stopping when
a broken belt condition is detected.
22-61 Broken Belt Torque
Range:
10 %*
[0 - 100 %]
22-62 Broken Belt Delay
Range:
10 s
[0 - 600 s]
22-75 Short Cycle Protection
Option:
[0] *
Disabled
[1]
Enabled
22-76 Interval between Starts
Range:
Size
rela-
[ par. 22-77 - 3600 s]
ted*
Function:
Set the desired Minimum Time for staying in Sleep Mode. This will override any wake up condi-
tions.
Function:
To be used if par. 0-02
Motor Speed Unit has been set for RPM (parameter not visible if Hz selec-
ted). Only to be used if par. 1-00
applied by an external controller.
Set the reference speed at which the Sleep Mode should be cancelled.
Function:
The drive will continue to run, but activate a Broken Belt Warning [W95]. A drive digital output or
a serial communication bus can communicate a warning to other equipment.
The drive will stop running and activate a Broken Belt alarm [A 95]. A drive digital output or a
serial communication bus can communicate an alarm to other equipment.
Reset Mode , to [13] Infinite
Broken Belt Function is
Function:
Sets the broken belt torque as a percentage of the rated motor torque.
Function:
Sets the time for which the Broken Belt conditions must be active before carrying out the action
Broken Belt Function .
selected in par. 22-60
Function:
Timer set in par. 22-76
Interval between Starts is disabled.
Interval between Starts is enabled.
Timer set in par. 22-76
Function:
Sets the time desired as minimum time between two starts. Any normal start command
(Start/Jog/Freeze) will be disregarded until the timer has expired.
MG.11.F3.02 - VLT
®
is a registered Danfoss trademark
Configuration Mode is set for Open Loop and speed reference is
If the drive is equipped with a constant speed bypass
with an automatic bypass function that starts the by-
pass if the drive experiences a persistent alarm con-
dition, be sure to disable the bypass's automatic by-
pass function, if [2] Trip is selected as the Broken
Belt Function.
6 How to Programme
6
129
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