Vacon 100 HVAC, Руководство по применению

Страница: 156 / 201

NOTE!
If you use long motor cables (max. 100 m) with small drives (≤1.5 kW), the motor
current that the drive measures can be much higher than the actual motor current.
It is because there are capacitive currents in the motor cable.
P3.9.11 MOTOR STALL FAULT (ID 709)
Use this parameter to select the response of the drive to a 'Motor Stall' fault.
If the stall protection detects that the shaft of the motor is stalled, a motor stall fault occurs.
P3.9.12 STALL CURRENT (ID 710)
Use this parameter to set the limit above which the current of the motor must stay for a stall
stage to occur.
You can set the value of this parameter between 0.0 and 2*I
L
. For a stall status to occur, the
current must be higher than this limit. If parameter P3.1.1.7 Motor Current Limit changes,
this parameter is automatically calculated to 90% of the current limit.
NOTE!
The value of the Stall Current must be below the motor current limit.
f
I
ID710
ID712
Stall area
Fig. 30: The stall characteristics settings
P3.9.13 STALL TIME LIMIT (ID 711)
Use this parameter to set the maximum time for a stall stage.
You can set the value of this parameter between 1.0 and 120.0 s. This is the maximum time
for the stall status to be active. An internal counter counts the stall time.
If the stall time counter value goes above this limit, the protection causes the drive to trip.
P3.9.14 STALL FREQUENCY LIMIT (ID 712)
Use this parameter to set the limit below which the output frequency of the drive must stay
for a stall stage to occur.
VACON · 156 PARAMETER DESCRIPTIONS
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