22-60 Broken Belt Function
Selects the action to be performed if the broken belt condition is detected.
Option:
Function:
[0] *
OFF
[1]
Warning
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.
[2]
Trip
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.
NOTE!
Do not set par. 14-20
Reset Mode
to [13] Infinite auto reset when par. 22-60
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.
NOTE!
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’ 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
22-75 Short Cycle Protection
Option:
Function:
[0] *
Disabled
Timer set in par. 22-76
is disabled.
[1]
Enabled
Timer set in par. 22-76
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.
VLT HVAC Low Harmonic Drive Instruction
Manual
6 How to Program the Low Harmonic Drive
MG.16.A1.22 - VLT
®
is a registered Danfoss trademark
6-39
6