Danfoss VLT FC 102 Operating Instructions Manual page 118

6 How to Programme the Low Harmonic Drive
NB!
Do not set par. 14-20
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:
10 %* [0 - 100 %]
22-62 Broken Belt Delay
Range:
6
10 s [0 - 600 s]
22-75 Short Cycle Protection
Option:
[0] * Disabled
[1] Enabled
22-76 Interval between Starts
Range:
Application [Application dependant]
dependent*
22-77 Minimum Run Time
Range:
0 s* [Application dependant]
NB!
Does not work in cascade mode.
118
Reset Mode , to [13] Infinite auto reset, when par. 22-60 Broken Belt Function is set to [2] Trip. Doing so will
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
selected in par. 22-60 Broken Belt Function .
Function:
Interval between Starts is disabled.
Timer set in par. 22-76
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.
Function:
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.
MG.16.A1.02 - VLT
VLT HVAC Low Harmonic Drive Operating In-
®
is a registered Danfoss trademark
structions