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Scalar Control (V/f)
9-8
9
Description:
It is the current limitation for the V/f control with actuation mode defined by P0344 (refer to the
and the current limit defined by P0135.
Table 9.1 -
Current limitation configuration
P0344
Function
Description
0 = Hold - FL ON
Current limitation of the "Ramp Hold" type
Active fast current limitation
Current limitation according to the
(a)
Fast current limitation at the value 1.9 x I
nomHD
active
1 = Decel. - FL ON
Current limitation of the "Ramp Deceleration" type
Active fast current limitation
Current limitation according to the
(b)
Fast current limitation at the value 1.9 x I
nomHD
active
2 = Hold - FL OFF
Current limitation of the "Ramp Hold" type
Inactive fast current limitation
Current limitation according to the
(a)
3 = Decel.- FL OFF
Current limitation of the "Ramp Deceleration" type
Inactive fast current limitation
Current limitation according to the
(b)
Current limitation of the "Ramp Hold" type:
It avoids the stalling of the motor during a torque overload at the acceleration or at the deceleration.
Working: if the motor current exceeds the value adjusted in P0135 during the acceleration or the deceleration,
the speed will no longer be increased (acceleration) or decreased (deceleration). When the motor current reaches
a value below P0135 the motor will again accelerate or decelerate. Refer to the
(a)
.
It acts faster than the "Ramp Deceleration" mode.
It acts in the motorization and braking modes.
Current limitation of the "Ramp Deceleration" type:
It avoids the stalling of the motor during a torque overload at the acceleration or at constant speed.
Working: if the motor current exceeds the value adjusted in P0135, the input of the speed ramp is set to
zero forcing a deceleration. When the motor current reaches a value below P0135 the motor will accelerate
again. Refer to the
(b)
.
Fast current limitation:
It reduces the inverter output voltage instantaneously when the motor current reaches the value of 1.9xI
nomHD
.
Содержание CFW-11 Series
Страница 2: ......
Страница 54: ...2 4 2 General Information ...
Страница 58: ...About the CFW 11 3 3 4 ...
Страница 74: ...Inverter Model and Accessories Identification 5 14 6 ...
Страница 86: ...Inverter Model and Accessories Identification 6 12 6 ...
Страница 94: ...Available Control Types 8 2 8 ...
Страница 118: ...VVW Control 10 8 10 ...
Страница 182: ...Functions Common to All the Control Modes 12 26 12 ...
Страница 220: ...Dynamic Braking 14 4 14 ...