Emerson ev1000 инструкция на русском

34

Chapter 5 Parameters

The reference value is based on 10V (i.e. 10V means 100%

input) ; and the feedback value is based on 20mA (20mA

corresponds to 100% output) .

Close-loop characteristic is selected through F5.16 to satisfy

different applications.

In order to meet the control requirements, the motor’s speed

should be increased with reference speed. This kind of

control characteristic is called positive response. If the motor

speed is required to be decreased when the reference value

is increased, this control characteristic is called negative

response.

See Figure 5-32. F5.16 defines the two characteristics.

Speed

Figure 5-32 Close-loop Control Characteristics

After the system type is determined, the following

procedures can be used to determine the close loop

parameters:

Determine the close-loop reference and feedback

channel (F5.01 and F5.02) ;

Define the relationship between close-loop reference

and feedback value (F5.08~F5.11) ;

Determine the speed reference of speed close-loop

control and the number of revolutions of PG

(F5.06~F5.07) ;

Determine the close-loop regulation characteristic, that

is, if the motor speed decreases while the input

reference increases, then the close-loop control

characteristic should be set to negative (F5.16=1) ;

Set integral regulation and close-loop frequency

(F5.17~F5.19) ;

Adjust close-loop filter time, sampling cycle, bias limit

and gain factor (F5.12~F5.15) .

F5.00 Close loop control

0: disabled

1: enabled

F5.01 Reference input method Range: 0~4 【 1 】

0: digital setting

Take the value of F5.05 (set analog close loop feedback,

F5.02＝0~5) ;

Take the value of F5.06, (set pulse close loop feedback,

F5.02＝6) .

1: VCI (0~10V)

2: CCI

Positive

Negative

Close loop

reference

Range: 0, 1 【 0 】

EV1000 Series General Purpose Variable Speed Drive User Manual

Pay attention to the setting of jumper CN10.

3: Keypad

4: PULSE

Note

The motor speed is controlled by pulse feedback. Given analog

input 10V (20mA) or max. input frequency F1.03, the output

pulse will be max. frequency F0.05, which corresponds to the

motor synchronous speed n

0

F5.02 Feedback method

0: VCI analog voltage 0~10V

1: CCI analog input

2: VCI + CCI

3: VCI-CCI

4: Min {VCI,CCI}

5: Max {VCI, CCI}

When current input is selected, the signal will be converted

to voltage signal, whose value is determined by the formula:

Vout=mA/2;

F5.02=6, pulse

It can be single-phase or 2-phase PG close loop feedback.

Please refer to multi-function input terminal X4, X5

(F7.03~F7.04) .

F5.03 Input filter

F5.04 Feedback filter

Both the input signal and feedback signal have some noise

signals. These signals can be filtered by setting the time

constant of filter (settings of F5.03 and F5.04) . The bigger

the time constant, the better the immunity capability, but the

response becomes slow. The smaller the time constant, the

faster the response, but the immunity capability becomes

weak.

F5.05 Digital reference input

When analog feedback is selected (F5.02=0~5) , this

function allows parameter setting from keypad or serial port.

F5.06 Speed close-loop setting

When PG pulse feedback is selected (F5.02=6) , speed can

be set through keypad or serial port.

F5.07 Pulse number per

revolution of encoder

Please set this parameter according to the characteristics of

the pulse encoder.

F5.08 Min. input

F5.09 Feedback of min. input

F5.10 Max. input

F5.11 Feedback of max. input

F5.08~F5.11 define the relation of analog close loop input

and feedback. The values of the above parameters are

＝120fmax/P) .

(n

0

Range: 0~6 【 1 】

Range: 0.01~50.00s 【 0.50s 】

Range: 0.01~50.00s 【 0.50s 】

Range: 0.00~10.00V 【 0.00 】

Range: 0~39000rpm 【 0 rpm 】

Range: 1~9999 【 1024 】

Range: 0.0%~F5.10 【 0.0% 】

Range: 0.0~100.0% 【 20.0% 】

Range: F5.08~100.0% 【 100.0% 】

Range: 0.0~100.0% 【 100.0% 】