Ducati RS 485 Bedienerhandbuch PDF herunterladen (Seite 9)

DO NOT CHANGE THIS PARAMETER IF THE CONTROLLER

IS INSTALLED ON A DUCATI ENERGIA POWER FACTOR

CORRECTION SYSTEM.

DATA

“IL”

IL IL IL

DATA

“COn”

DO NOT CHANGE THIS PARAMETER IF THE

CONTROLLER S INSTALLED ON A DUCATI ENERGIA

POWER FACTOR CORRECTION SYSTEM.

DATA

“SUP”

“SUP” “U2”

U1 U2

DO NOT CHANGE THIS PARAMETER IF THE

CONTROLLER IS INSTALLED ON A DUCATI ENERGIA

POWER FACTOR CORRECTION SYSTEM.

DATA

“FAS”

On blo

DO NOT CHANGE THIS PARAMETER IF THE

CONTROLLERS INSTALLED ON A DUCATI ENERGIA

POWER FACTOR CORRECTION SYSTEM.

“ACq”

“ACq” no

DATA

Press to go on to the next parameter

10.4 = Mains C.T. ratio.

The parameter is displayed in turn with the value

previously set by the user.

The value can be changed using the or key.

Setting examples:

C.T. 300/5 =60; C.T. 350/5 =70; C.T. 400/5 =80

Ex.

Press to go on to the next parameter

10.5 = Type of connection of controller to mains.

is displayed in turn with the default value “FF1”.

The user can change this parameter using the or key

(possible settings: FF1, FF2, F-n - see chap 5 - Page 59).

Press to go on to the next parameter

10.6 = Setting of terminal used to power the controller.

is displayed in turn with the default value .

The user can change this parameter using the or key

(possible settings: /230V, /400V).

Press to go on to the next parameter

10.7 =Activation or deactivation of automatic adjustment

of mains C.T. direction.

is displayed in turn with the default value “0n”

(autoadjustment enabled).

The parameter can be changed using the or key

(possible settings: /auto-adjustment, /C.T. direction

fixed).

10.8 = Menu for launching the procedure for acquiring the

power of single steps and setting their switching logic.

is displayed in turn with the default value “ ”.

The parameter can be changed using the or key and

confirming by pressing ; the possible settings are:

= no acquisition procedure will be carried out.

AUt

“C1”

DATA

Pro

PFC

DATA

SWITCHING LOGICS

LINEAR LOGIC

GEOMETRIC LOGIC

= a new automatic acquisition procedure will be carried out.

The capacitor steps will be switched on and measured in

sequence a total of three times each. At the end of this procedure

the controller will alternately display and the measured

power value of the first step; the power of the next step can be

displayed by pressing the key.

Press for three seconds to go on to the next parameter.

= the switching logic & power of the single steps is manually

set.

When the letters “Pro” appear, select the desired program (see

Table 1 - Page 72) using the or key and press DATA to

confirm.

Thereafter, when the letters “PFC” appear, set the value in kVAr

of the first power factor correction capacitor bank (always

connected to output terminal “1”), again using the or key;

Example: if you have an automatic 100kVAr system with power

70 steps of 10-10-20-20-40 the parameters should be set as

follows:

= 26 (see Table 1 - Page 72)

= 10.

Press to confirm and go on to the next parameter.

The controller can adopt one of three logics to switch the

capacitor banks in and out of service in order to achieve and

maintain the set cosphi, i.e.:

This logic is identified by the code 1:1:1 and presupposes the

condition that all capacitor banks have equal powers. Given a

situation such as the one illustrated in the table,

Bank No. 1 2 3 4 5 6

Status OFF ON ON ON OFF OFF

the controller will switch on bank no. 5 if a bank needs to be

switched into service and switch off bank no. 2 if one needs to be

switched off. This will ensure that all the banks will work and as a

result component wear will be evenly distributed among them.

It is identified by the code 1:2:4 and presupposes the condition

that each bank has a power equal to or at most double the power

of the one that precedes it. Assuming that the banks have powers

as shown in the table,

Bank No. 1 2 3 4 5 6

Power 10 20 40 40 40 80

and that the load requires 50 kVAr, the controller will switch on the

1st, 2nd and then 3rd banks, thereby reaching 70 kVAr. At this

point it will switch off the 1st and then the 2nd, which will bring it to

40 kVAr, and finally it will switch the 1st back on to reach 50 kVAr.

As may be observed, this logic makes it possible to obtain a large

number of steps with a limited number of banks. However, the

number of switching operations is not evenly distributed among

the banks, resulting in greater wear on the first ones.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

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