Toshiba TOSVERT VF-S11 - Protection Functions

E6581158
F-60
6
6.19 Protection functions
6.19.1 Setting motor electronic thermal protection
VJT : Motor electronic thermal protection level 1
H
: Motor 150%-overload time limit
• Function
This parameter allows selection of the appropriate electronic thermal protection characteristics
according to the particular rating and characteristics of the motor.
Q Parameter setting
Title Function Adjustment range Default setting
VJT
Motor electronic thermal protection
level 1
10-100 (%) 100
H
Motor 150%-overload time limit 10-2400 [sec] 300
For more details, see 5.13.
6.19.2 Setting current stall
H : Stall prevention level 1
H
: Stall prevention level 2
Caution
Prohibited
• Do not set the stall prevention level (H) extremely low.
If the stall prevention level parameter (H) is set at or below the no-load current of the motor, the
stall preventive function will be always active and increase the frequency when it judges that
regenerative braking is taking place.
Do not set the stall prevention level parameter (H) below 30% under normal use conditions.
• Function
This parameter adjusts the output frequency by activating a current stall prevention function against
a current exceeding the H-specified level.
Q Parameter setting
Title Function Adjustment range Default setting
H Stall prevention level 1
H Stall prevention level 2
10-199 (%),
200: Deactivated
150