Toshiba TOSVERT VF-AS3, Instruction Manual

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E6582062 
6. [Advanced] How to use parameters
6-120
4
4
6
9
6. 30. 2 Setting overcurrent stall
<F601: Stall prevention level 1>
<F185: Stall prevention level 2>
■ Function
If the current exceeding the level set at Stall prevention level 1 or 2 is flowed, stall prevention
operation will be enabled to lower the output frequencies.
Setting the output frequency low lowers output current of fans and pumps, which prevents
overcurrent trip.
■ Parameter setting
■ How to set the parameter
100% reference is the inverter rated current.
To switch <F601: Stall prevention level 1> between <F185: Stall prevention level 2>, use signals to
input terminal. Assign "32: Stall prevention switching/Torque limit switching 1" to the unused input
terminal.
For details, refer to [7. 2. 1].
■ Display during the stall prevention operation
If the current exceeding the stall prevention level is about to flow, the output frequency will change.
At this time, the letter "C" will blink.
CAUTION
Prohibited
• Do not set the stall prevention level parameters (F601 and F185) extremely low.
If the stall prevention level parameters (F601 and F185) are set at or below the motor no-load
current, the stall preventive function will be always enabled and increase the frequency when it
judges that regenerative braking is taking place.
Do not set the stall prevention level parameters (F601 and F185) at 30% or less under normal
use conditions.
Title Parameter name Adjustment range Unit Default setting
F601 Stall prevention level 1 10-200 (HD)
10-160 (ND) % *1
*1 Depending on capacity. For details, refer to [11. 6].
In case F601=199, 200(or 159, 160), stall prevention control is not activated.
F185 Stall prevention level 2
0.0Hz STOP
13:53
F601 : Stall prevention level 1
Min: 10 Max: 200
X1000 X100 X10 X1
%
150