Leroy-Somer R220 VSG+CCM Instruction Manual

4291 en -10.2008 /a

R220

A.V.R.

Installation and maintenance

LEROY-SOMER Installation and maintenance 4291 en-10.2008/a

R220

A.V.R.

This manual concerns the alternator A.V.R. which you have just purchased.

We wish to draw your attention to the contents of this maintenance manual. By following

certain important points during installation use and servicing of your A.V.R. you can

look forward to many years of trouble-free operation.

SAFETY MEASURES

Before using your machine for the first time

it is important to read the whole of this

installation and maintenance manual.

All necessary operations and interventions

on this machine must be performed by a

qualified technician.

Warning symbol for an operation capable

of damaging or destroying the machine

or surround-ing equipment.

Ourtechnical support service wi II be pleased

to provide any additional infor-mation you

may require.

The various operations described in this

manual are accompanied by recommen-da-

tions or symbols to alert the user to potential

risks of accidents. It is vital that you unders-

tand and take notice of the following warning

symbols.

Warning symbol for general danger to

personnel.

This A.V.R. can be incorporated in a

machine marked C.E. Warning symbol for electrical danger to

personnel.

Note: LEROY-SOMER reserves the right to

modify the characteristics of its products at

any time in order to incorpórate the latest

technological developments. The information

contained in this document may therefore be

changed without notice.

«*i r v~ S om er

LEROY-SOMER Installation and maintenance 4291 en-10.2008/a

R220

A.V.R.

CONTENTS

1 - SUPPLY

....................

.....

...4

1.1 - SHUNT excitation system

.............................

2-R220A.V.R

.................

.......................................................

2.1 - Characteristics

.............

2.2 - R220 AVR option

......................................

3 - INSTALLATION - COMMISSIONÍNG

..........................................................

3.1 - Electrical checks on the AVR

..............................................................................

3.2 - Settings

......................................................................................................................

3.3 - Electrical faults

...................................................................................................

4 - SPARE PARTS...

..................................................

4.1 - Designation

.........................................................................................................

4.2 - Technical support Service

.............................................................................................

All such operations performed on the A.V.R. should be undertaken by personnel trained

in the commissioning servicing and maintenance of electrical and mechanical

components.

This document is the property of:

MOTEURS LEROY-SOMER

It may not be reproduced in any form without prior authorization.

All brands and models have been registered and patents applied for.

ttrni/* C^¿r>!¡nnÉ cu ¡r

LEROY-SGMER Installation and maintenance 4291 en-10.2008/a

R220

A.V.R.

1 - SUPPL

1.1 - SHUNT excitation system

The alternator with Shunt excitation is self-

excited with an R 220 voltage regulator.

The regulator monitors the exciter excitation

current as a function of the alternator output

voltage. Very simple in design the alternator

with shunt excitation has no sustaining

short-circuit capacity.

2-R220A.V.R.

2.1 - Characteristics

- Voltage regulation: ±0.5%.

- Voltage supply/sensing range 85 to 139 V

(50/60 Hz)

- Rapid response time (500 ms) for a

transient voltage variation amplitude of

± 20%

- Voltage setting P1

- Stability setting P2.

- Power supply protected by 8 Atuse slow-

blow action (tolerates 10 A for 10 s)

The fuse is impregnated in the resin

therefore it can not be replaced.

- Frequency: 50 Hz with ST3 jumper - 60 Hz

without ST3 jumper.

2.2-R220AVR option

Potentiometer for remóte voltage

adjustment 1000 £2/ 0.5 W min: adjustment

range ± 5%.

- Remove the ST4 jumper.

STATOR : 12 wires (marked T1 to T12)

T1 ÍT7 jT2rfT8 ÍT3 |T9

T11 T6 T12

P1 ^Voltage^

T4 Option

Potentiometer for remóte

voltage adjustment

P2 ^tability^

T3 Frequency

B50 H z ^ 6 0 H z

LEROY-SOMER Installation and maintenance 4291 en-10.2008/a

R220

A.V.R.

3 - INSTALLATION -

COMMISSIONING

3.1 - Electrical checks on the AVR

- Check that all connections have been

made properly as shown in the attached

wiring diagram.

- Check that the ST3 frequency selection

jumper is on the correct frequency setting.

- Check whether the ST4 jumper or the

remóte adjustment potentiometer have

been connected.

3.2 - SettingsA

The machine is tested and set at the

factory. When first used with no load

make sure that the drive speed is correct

and stable (see the nameplate). After

operational testing replace all access

panels or covers.

The only possible adjustments to the

machine should be made on the AVR.

3.2.1 - R 220 setting (shunt system)

Initial potentiometer settings

-Plpotentiometer(AVRvoltageadjustment):

fully anti-clockwise.

- Remóte voltage adjustment potentiometer:

centre position.

Run the alternator at its rated speed. If the

voltage does not increase the magnetic

circuit should be remagnetized (see section

3.3).

- Turn the AVR voltage adjustment

potentiometer P1 slowly until the output

voltage rated valué is obtained.

- Adjust the stability setting using P2.

Clockwise: increase the rapidity.

Anti-clockwise: decrease the rapidity.

3.2.2 - Special type of use

( W ARNING )

Excitation circuit E+ E- must not be left

open when the machine is running : AVR

damage will occur.

3.2.1.1 - R220 field weakening (SHUNT)

— <rfc>— o

VOLT P0T1K 110 0v E+ E-

* i i [ i E 3 H in n

The exciter is switched off by disconnecting

the AVR power supply (1 wire - 0 or 110V).

Contact rating : 16A - 250V alt.

3.2.1.2 - R220 field forcing

(400V-10A) Diode

Battery must be isolated from the earth.

Exciter field may be at line potential.

LEROY-SOMER Installation and maintenance 4276 en- 10.2008/a

R220

A.V.R.

3.3 - Electrical faults

Fault Action Effect Check/Cause

No voltage at

no load on

start-up

Connect a new battery

of 4 to 12 volts to

termináis E- and E+

respecting the polarity

for 2 to 3 seconds

The alternator builds up and its

voltage is still correct when the

battery is removed.

- Lack of residual magnetism

The alternator builds up but its

voltage does not reach the rated

valué when the battery is

removed.

- Check the connection of the voltage

reference to the AVR

- Faulty diodes

- Armature short-circuit

The alternator builds up but its

voltage disappears when the

battery is removed

- Faulty AVR

- Field windings disconnected

- Main field winding open circuit - check the

resistance

Voltage too

low Check the drive speed Correct speed

Check the AVR connections (AVR may be

faulty)

- Field windings short-circuited

- Rotating diodes burnt out

- Main field winding short-circuited - Check

the resistance

Speed too low Increase the drive speed

(Do not touch the AVR voltage pot. (P2)

before running at the correct speed.)

Voltage too

high Adjust AVR voltage

potentiometer Adjustment ineffective Faulty AVR

Voltage

oscillations Adjust AVR stability

potentiometer - Check the speed : possibility of cyclic

irregularity

- Loose connections

- Faulty AVR

- Speed too low when on load (or U/F bend

set too high)

Voltage

correct at no

load and too

low when on

load O

Run at no load and

check the voltage

between E+ and E- on

the AVR

- Check the speed (or U/F bend set too high)

- Faulty rotating diodes

- Short-circuit in the main field. Check the

resistance

- Faulty exciter armature.

(*) Caution : For single-phase operation check that the sensing wires coming from the AVR are correctly connected to the

operating termináis

Voltage

disappears

during

operation

Check the AVR the

surge suppressor the

rotating diodes and

replace any detective

components

The voltage does not return to the

rated valué. - Exciter winding open circuit

- Faulty exciter armature

- Faulty AVR

- Main field open circuit or short-circuited

Warning : after operational testing replace all access panels or covers.

i_é»rov -~

LEROY-SOMER Installation and maintenance 4276 en- 10.2008 /a

R220

A.V.R.

4 - SPARE PARTS

4.1 - Designation

Description Type Code

A.V.R. R 220 AEM110 RE 028

4.2 - Technical support Service

Our technical support service will be happy

to provide any information you requiré.

When ordering spare parts you should in

dícate the complete machine type its serial

number and the information indicated on the

nameplate.

Part numbers should be identified from the

exploded views and their description in

the parts list.

Our extensive network of «service stations»

can dispatch the necessary parts without

delay.

To ensure correct operation and the safety

of our alternators we recommend the use of

original manufacture spare parts.

In the event of failure to comply with this ad-

vice the manufacturer cannot be held res-

ponsible for any damage.

Leroy-Somer

Leroy omer Electro-Technique (Fuzhou) Co., Ltd

NO.l Emerson Road, Gaishan,Cangshan district,Fuzhou,Fujian,P.R.China 350026

Tel: (86) 591-88000922 Fax: (86) 591-83567185

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