Schneider Electric Altivar 58 VW3-A58101 Uživatelský manuál stáhnout pdf (Strana 34)

ALTIVAR



58 Keypad Display VVDED397047US R8/01

Chapter 2 — Menus 08/01

Additional Adjustment Parameters for General Use

Table 8 lists the additional parameters that are accessible when the

macro-configuration is set to General Use.

Table 8: 2—Additional Adjustment Parameters with General Use

Macro-Configuration

Parameter Code Description

Adjustment

Range

Factory

Setting

IR Compens. - %

UFr

IR Compensation

Allows adjustment of the default value

of IR Compensation or the value

measured during auto-tuning.

0 to 150%

0 to 800%

100%

The adjustment range is extended to 800% if the parameter SPC

(special motor) is set to Yes in the 3—Drive menu (see page 44).

This parameter is used to adjust low speed torque for optimal

performance. Adjust this parameter to compensate for the

resistive voltage drop of the motor stator windings and the

conductors connecting the motor and drive controller. (If using

special motors such as synchronous permanent magnet motors,

synchronous wound field motors, or synchronous reluctance

motors, the adjustment range is 0 to 800%.) This parameter is

typically used to boost torque performance at low speed

operation. If an autotune is performed, adjustment of this

parameter is usually not required.

Slip Comp. - %

SLP

Slip Compensation

Allows adjustment of the slip

compensation around a fixed value set

by the motor nominal speed.

0 to 150% 100%

This parameter is used to adjust the slip compensation to improve

speed regulation. Induction motors develop torque based on the

slip, which is the difference between the speed of the rotating

magnetic field in the rotor and the speed of the stator. As the load

increases the slip increases to produce the necessary torque.

In applications where the change in speed due to slip is

undesirable, the slip compensation should be increased. When

this parameter is increased, the drive controller will automatically

increase the output frequency. The amount of increase is

proportional to the increase of the load, allowing one setting for

the entire speed range.

Jog Freq. -Hz

JOG

Frequency when operating in Jog 0 to 10 Hz 10 Hz

Jog Delay - s

JGt

Delay between two consecutive jog

operations

0 to 2 s 0.5 s

NOTE: UFr and

SLP are unitless

values. The

percent value is

only to provide a

range of numbers.

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 111 112

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