4-59
4-2 Function Mode
4
Functions
Reverse Rotation Prevention Function
•This function is enabled when "03" (sensorless vector control), "04" (0-Hz sensorless vector
control), or "05" (sensor vector control) is selected in control method A044/A244.
•Because of the Inverter's control characteristics, the Inverter may output a rotation signal in the
direction opposite to that of the RUN command (e.g. in a low-speed range). If the motor's reverse
rotation may cause a problem (e.g. damage to the machine driven by the motor), set reverse
rotation prevention selection b046 to "enabled".
Torque LADSTOP Function
•If "03" (sensorless vector control), "04" (0-Hz sensorless vector control), or "05" (sensor vector
control) is selected in control method A004/A244, this function temporarily stops the frequency
deceleration function (LAD) when the torque limit function is activated.
Parameter No. Function name Data Default setting Unit
A044/A244
V/f characteristics
selection
03: SLV (Sensorless vector control)
04: 0SLV (0-Hz sensorless vector control)
05: V2 (Sensor vector control)
00
b046
Reverse rotation
prevention selection
00: OFF (Disabled)
01: ON (Enabled)
00
Parameter No. Function name Data Default setting Unit
A044/A244
V/f characteristics
selection
03: SLV (Sensorless vector control)
04: 0SLV (0-Hz sensorless vector control)
05: V2 (Sensor vector control)
00
b040 Torque limit selection
00: 4-quadrant (Four-quadrant separate
setting)
01: TRQ input (Terminal switch)
02: [O] input (Analog input)
03: Option 1
04: Option 2
00
b041
Torque limit 1
(Four-quadrant mode
forward power running)
0 to 200 (0.4 to 55 kW)
0 to 180 (75 to 132 kW)
no (Torque limit disabled)
Forward power running
under four-quadrant separate setting
150 %
b042
Torque limit 2
(Four-quadrant mode
reverse regeneration)
0 to 200 (0.4 to 55 kW)
0 to 180 (75 to 132 kW)
no (Torque limit disabled)
Reverse regeneration
under four-quadrant separate setting
b043
Torque limit 3
(Four-quadrant mode
reverse power running)
0 to 200 (0.4 to 55 kW)
0 to 180 (75 to 132 kW)
no (Torque limit disabled)
Reverse power running
under four-quadrant separate setting
b044
Torque limit 4
(Four-quadrant mode
forward regeneration)
0 to 200 (0.4 to 55 kW)
0 to 180 (75 to 132 kW)
no (Torque limit disabled)
Forward regeneration
under four-quadrant separate setting
b045
Torque LADSTOP
selection
00: OFF (Disabled)
01: ON (Enabled)
00
C001 to C008
Multi-function inputs
1 to 8 selection
40: TL (Torque limit enabled)
41: TRQ1 (Torque limit switching 1)
42: TRQ2 (Torque limit switching 2)
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