NB!
Do not set par. 14-20
Reset Mode
, to [13] Infinite auto reset, when par. 22-60
Broken Belt Function
is set to [2] Trip. Doing so will
cause the drive to continuously cycle between running and stopping when a broken belt condition is detected.
NB!
If the drive is equipped with a constant speed bypass with an automatic bypass function that starts the bypass if the drive experiences
a persistent alarm condition, be sure to disable the bypass’s automatic bypass function, if [2] Trip is selected as the Broken Belt Function.
22-61 Broken Belt Torque
Range: Function:
10 %* [0 - 100 %] Sets the broken belt torque as a percentage of the rated motor torque.
22-62 Broken Belt Delay
Range: Function:
10 s [0 - 600 s] Sets the time for which the Broken Belt conditions must be active before carrying out the action
selected in par. 22-60
Broken Belt Function
.
22-75 Short Cycle Protection
Option: Function:
[0] * Disabled Timer set in par. 22-76
Interval between Starts
is disabled.
[1] Enabled Timer set in par. 22-76
Interval between Starts
is enabled.
22-76 Interval between Starts
Range: Function:
Application
dependent*
[Application dependant] 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.
22-77 Minimum Run Time
Range: Function:
0 s* [Application dependant] Sets the time desired as minimum run time after a normal start command (Start/Jog/Freeze). Any
normal stop command will be disregarded until the set time has expired. The timer will start counting
following a normal start command (Start/Jog/Freeze).
The timer will be overridden by a Coast (Inverse) or an External Interlock command.
NB!
Does not work in cascade mode.
6 How to Programme the Low Harmonic Drive
VLT HVAC Low Harmonic Drive Operating In-
structions
118 MG.16.A1.02 - VLT
®
is a registered Danfoss trademark
6
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