Ducati RS 485 Bedienerhandbuch PDF herunterladen (Seite 6)

NOTE:

combination of 2 keys:

AUTO/MAN +

+ AUTO/MAN

4) HOW IT WORKS

5) MAINS CONNECTION

“FF1”

DUCATI ENERGIA

“FF2”

Warning:

“F-n”

6) INSTRUCTIONS FOR INSTALLING THE C.T.

VERY IMPORTANT:

The front panel of REGO features a series of keys

for accessing functions and programming; some functions

are activated by pressing a in this

manual, when mention is made of a two-key combination

(e.g. ), it means that the user must press

the first key and, without releasing it, then press the second

one. (In fact the combination activates a

different function from the combination .

The measured current from the mains C.T. is filtered and

compared with the required power factor and the insensitivity

zone: if the conditions set by the user thus require, the (or )

LED will light up and all the banks necessary in order to reach the

set power factor will be switched into service in as little time as

possible (compatibly with the capacitor discharge time T1).

The controller automatically adjusts to the direction of circulation

of the current drawn from the C.T.

If the current to the C.T. secondary winding falls below 200mA,

the controller will disconnect all the banks and the display will

show“COS” in turn with flashing “.-.-.” .

It will go into standby until a current exceeding that value is

restored.

The REGO reactive power controller may be connected to the

mains according to three different configurations (see diagram in

Fig. 3 - Page 3).

In this configuration (default) the C.T./5A is positioned on

phase R(L1) and the reference voltage is drawn from the

line voltage between phases S(L2) and T(L3). This is the

classic varmetric connection. This is the type of

connection utilized in automatic

power factor correction systems.

In this configuration the C.T./5A is on phase R(L1)

whereas the reference voltage is the line voltage

between phase R(L1) itself and phase S(L2).

if the cyclical direction of the power supply phases is

not known, configuration FF2 may give rise to an error in the

power factor measurement.

In this configuration the C.T./5A is on phase R(L1)

whereas the reference voltage is the phase-neutral

between phase R(L1) itself and the neutral N. Use this

configuration only for single-phase networks.

The C.T. must have a value:

– at the primary winding: equal to or relatively higher than the

maximum current absorbed by the load downstream from

the C.T. itself.

– at the secondary winding: 5A.

– The C.T. must be connected both upstream from the power

factor correction system and upstream from the load (See

Fig.5 positions a and b).

– The C.T. must never be directly connected on the load power

supply line (See Fig.5 position c) or directly on the power

factor correction line (See Fig.5 position d).

– In the FF1 connection configuration the C.T. must be

connected to the phase not used for the voltmetric supply to

the controller. If the controller is installed on a DUCATI

energia power factor correction system the C.T. phase must

be L1/R; see Fig.5 position and ).

2) SAFETY

WARNING

DUCATI ENERGIA

3) GENERAL DESCRIPTION

This automatic power factor correction controller was

manufactured and tested in conformity with current standards and

left the factory in perfect conditions of technical safety.

In order to maintain these conditions and ensure safe operation,

the user must abide by the instructions provided herein.

This device must be installed by qualified personnel in

accordance with the equipment regulations currently in

force in order to prevent injury or damage to

persons or property.

Maintenance or repair work

must be managed solely by authorized personnel.

Before undergoing any maintenance or repairs,

the device must be disconnected from all power sources.

s.p.a. disclaims all liability for any injury or

damage caused to persons or property as a result of improper use

of its products.

In view of the continuous evolution of our technology, we reserve

the right to change the specifications contained herein without

notice. The catalogue descriptions and data shall thus have no

contractual validity.

The REGO reactive power controller is designed to control and

regulate capacitor banks. It operates on the basis of

microprocessor technology, which provides accurate, reliable

power factor measurements. The power factor is controlled by

switching capacitor banks according to the reactive power

requirements of the load: if more than one step is needed in order

to reach the cos. required, REGO activates all the steps

necessary with a delay between one and the other equal to the set

time “T2”. The number of switching operations is thereby reduced

and where the capacitor banks have an equal value, they will be

used n a homogeneous manner.

The controller features both automatic and manual operating

modes. In addition, the powers associated with the steps can be

automatically acquired thanks to the “Auto Acquisition” function.

At the end of this procedure, moreover, the controller also

automatically selects the most appropriate switching sequence.

Alternatively a user program, chosen among the numerous

available options, can be manually set. Thanks to this function the

controller will be able to intervene and correct the system PF more

quickly: in fact, on the basis of real-time power measurements and

the known powers associated with individual steps, it can

calculate how much reactive power is needed to bring the cos. to

the desired value and switch on all the necessary steps together

(with just a settable delay “T2” between one and the next), as

noted previously.

The 7- or 12-step model also features an Rs485 serial interface

with

standard “DUCATI” communication protocol which enables the

user to

connect the device to a network of instruments and read the

measured data remotely from a connected PC.

REGO also offers other useful functions, such as panelboard

temperature measurements for controlling an external cooling fan

(in

the 7- or 12-step model), a series of protections and associated

alarms to safeguard the capacitor banks and guarantee efficient

system performance, the possibility of counting the number of

switching operations of a certain step to prevent possible

downtimes due to failures and thereby increase the system’s

reliability, and other functions as well.

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

Kommentare zu diesen Handbüchern

Keine Kommentare

Ducati RS 485 Bedienerhandbuch Seite 6

Kommentare zu diesen Handbüchern