WEG CFW-11 Series User Manual page 61

First Time Power-Up and Start-Up
Parameter Name
P0100 Acceleration
Time
P0101 Deceleration
Time
P0133 Minimum
Speed
P0134 Maximum
Speed
P0135 Max. Output
Current (V/F
control mode
current
limitation)
5
P0136 Manual Torque
Boost
5-6
Table 5.1 - Parameters contained in the Basic Application group
Description
- It defines the time to accelerate linearly from 0 up to the
maximum speed (P0134).
- If set to 0.0 s, it means no acceleration ramp.
- It defines the time to decelerate linearly from the maximum
speed (P0134) up to 0.
- If set to 0.0 s, it means no deceleration ramp.
- They defines the minimum and the maximum values of the speed
reference when the drive is enabled.
- These values are valid for any reference source.
Reference
P0134
P0133
0
0 ................................ 10 V
0 ...............................20 mA
4 mA ............................20 mA
10 V ..................................0
20 mA ...............................0
20 mA ............................4 mA
- It avoids motor stalling under torque overload condition during
the acceleration or deceleration.
- The factory default setting is for "Ramp Hold": if the motor
current exceeds the value set at P0135 during the acceleration or
deceleration, the motor speed will not be increased (acceleration)
or decreased (deceleration) anymore. When the motor current
reaches a value below the programmed in P0135, the motor
speed is again increased or decreased.
- Other options for the current limitation are available. Refer to
the CFW-11 programming manual.
Motor Current
P0135
Time
Speed
Ramp
deceleration
acceleration
(P0100)
During
Time
acceleration
- It operates in low speeds, modifying the output voltage x
frequency curve to keep the torque constant.
- It compensates the voltage drop at the motor stator resistance.
This function operates in low speeds increasing the inverter output
voltage to keep the torque constant in the V/f mode.
- The optimal setting is the smallest value of P0136 that allows the
motor to start satisfactorily. An excessive value will considerably
increase the motor current at low speeds, and may result in a fault
(F048, F051, F071, F072, F078 or F183) or alarm (A046, A047,
A050 or A110) condition.
Output voltage
Rated
P0136=9
1/2 Rated
0
Nnom/2
Alx Signal
Motor Current
P0135
Time
Speed
Ramp
(P0101)
During
Time
deceleration
P0136=0
Speed
Nnom
Adjustable Factory
Range Setting
0.0 to 999.0 s 20.0 s
0.0 to 999.0 s 20.0 s
0 to 90 rpm
18000 rpm (60 Hz motor)
75 rpm
(50 Hz motor)
1800 rpm
(60 Hz motor)
1500 rpm
(50 Hz motor)
0.2 x I to 1.5 x I
nom-HD nom-HD
2 x I
nom-HD
0 to 9 1
User
Setting