GRAIGAR A.V.R. R220 Instruction Manual

R220
m
T1 T2
T
T4 T5
T
T7 T8
T10 T11
E+ E-
0V
110
220
VOLT POT 1K
This manual is to be given to
the end user
A.V.R.
Installation and maintenance

LEROY-SOMER 10.2008 / a
Installation and maintenance
R220
A.V.R.
4291 en -
SAFETY MEASURES
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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
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Our technical support service will 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.
This A.V.R. can be incorporated in a
machine marked C.E.
Warning symbol for an operation capable
of damaging or destroying the machine
or surround-ing equipment.
Warning symbol for general danger to
personnel.
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 incorporate the latest
technological developments. The information
contained in this document may therefore be
changed without notice.
WARNING
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.

LEROY-SOMER 10.2008 / a
Installation and maintenance
R220
A.V.R.
4291 en -
CONTENTS
1 - SUPPLY..............................................................................................................................4
1.1 - SHUNT excitation system ............................................................................................4
2 - R220 A.V.R. ........................................................................................................................4
2.1 - Characteristics ............................................................................................................. 4
2.2 - R220 AVR option ..........................................................................................................4
3 - INSTALLATION - COMMISSIONING .................................................................................5
3.1 - Electrical checks on the AVR ........................................................................................5
3.2 - Settings........................................................................................................................5
3.3 - Electrical faults.............................................................................................................6
4 - SPARE PARTS...................................................................................................................7
4.1 - Designation..................................................................................................................7
4.2 - Technical support service .............................................................................................7
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.
Copyright 2005 : MOTEURS LEROY-SOMER
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.

LEROY-SOMER 10.2008 / a
124 mm
85 mm
T1 T2 T3
T4 T5 T6
5+ 6-
T7 T8 T9
T10 T11 T12
E+ E-
0V
110
R 220
P1
P2
ST3
VOLT
OPEN FOR 60 Hz STAB
POT 1K
ST4
50 Hz 60 Hz
Installation and maintenance
R220
A.V.R.
1 - SUPPLY
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
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with shunt excitation has no sustaining
short-circuit capacity.
2 - R220 A.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.
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blow action (tolerates 10 A for 10 s)
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therefore it can not be replaced.
- Frequency: 50 Hz with ST3 jumper - 60 Hz
without ST3 jumper.
2.2 - R220 AVR option
Potentiometer for remote voltage
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range ± 5%.
- Remove the ST4 jumper.
SHUNT SYSTEM MAIN FIELD STATOR : 12 wires (marked T1 to T12)
Armature
Field
Voltage
Option
Stability
Frequency
Potentiometer for remote
voltage adjustment
Varistor
2 x holes Ø 5.8 x 109 mm
4291 en -

LEROY-SOMER 10.2008 / a
Installation and maintenance
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
remote adjustment potentiometer have
been connected.
3.2 - Settings
The machine is tested and set at the
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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
-P1potentiometer(AVRvoltageadjustment):
fully anti-clockwise.
- Remote voltage adjustment potentiometer:
centre position.
Run the alternator at its rated speed. If the
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circuit should be remagnetized (see section
3.3).
- Turn the AVR voltage adjustment
potentiometer P1 slowly until the output
voltage rated value is obtained.
- Adjust the stability setting using P2.
Clockwise: increase the rapidity.
Anti-clockwise: decrease the rapidity.
3.2.2 - Special type of use
Excitation circuit E+, E- must not be left
open when the machine is running : AVR
damage will occur.
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The exciter is switched off by disconnecting
the AVR power supply (1 wire - 0 or 110V).
Contact rating : 16A - 250V alt.
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Battery must be isolated from the earth.
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WARNING
E+ E-
0V
110
VOLT POT 1K
Battery (B Volt)
+
-
t
(400V - 10A) Diode
E+ E-
0V
110
Exciter field
4291 en -

LEROY-SOMER 10.2008 / a
Installation and maintenance
R220
A.V.R.
4276 en -
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
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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
value 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
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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
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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 (*)
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
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resistance
- Faulty exciter armature.
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operating terminals
Voltage
disappears
during
operation
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replace any defective
components
The voltage does not return to the
rated value.
- Exciter winding open circuit
- Faulty exciter armature
- Faulty AVR
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Warning : after operational testing, replace all access panels or covers.

LEROY-SOMER 10.2008 / a
Installation and maintenance
R220
A.V.R.
4276 en -
4 - SPARE PARTS
4.1 - Designation
Description Type Code
A.V.R. R 220 AEM 110 RE 028
4.2 - Technical support service
Our technical support service will be happy
to provide any information you require.
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number and the information indicated on the
nameplate.
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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
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original manufacture spare parts.
In the event of failure to comply with this ad-
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ponsible for any damage.