Beltrame S2014 User manual

Nr. Documento
Revisione
Autore
Data stampa
Nr. pagine
M_S2014
01
32

PAG.2/32
Contents
Contents ..................................................................................................... 2
Important Notice ........................................................................................ 3
1. SAFETY INSTRUCTIONS ...................................................................... 4
1.1 General.....................................................................................................4
1.2 Safety Instructions .....................................................................................5
2. DEVICE DESCRIPTION ........................................................................ 6
2.1 Introduction ..............................................................................................6
2.2 Area of application .....................................................................................7
2.3 Hardware ..................................................................................................8
2.3.1 Control elements and interfaces .......................................................... 8
2.3.2 Device connections: power and high voltage....................................... 10
2.3.3 Device connections: control signals and interfaces............................... 11
2.4 Software .................................................................................................13
2.4.1 Operating modes ............................................................................. 13
3. Description of the functionality......................................................... 14
3.1 Soft Start ................................................................................................14
3.2 Droop Compensation ................................................................................14
3.3 ‘Keep alive’..............................................................................................15
3.4 Limiters ..................................................................................................16
3.4.1 V/f Limiter ...................................................................................... 16
3.4.2 Minimum excitation current............................................................... 16
3.4.3 Maximum excitation current.............................................................. 17
3.4.4 Minimum capability .......................................................................... 17
3.4.5 Massima capability........................................................................... 18
4. References and Regulations.............................................................. 19
4.1 Field Current Regulation (FCR)...................................................................20
4.2 Automatic voltage regulator (AVR) .............................................................20
4.3 Automatic Power Factor regulation (PF) ......................................................21
4.4 Automatic reactive power regulation (VAR) .................................................21
4.5 Digital reference adjust by calibrator (U/Down)............................................22
4.6 Digital reference adjust by analog (Pot/An. In) ............................................22
5. OPERATOR INTERFACE ..................................................................... 23
5.1 Control keypad and display .......................................................................23
5.2 Navigating the menus...............................................................................24
5.3 Parameters saving....................................................................................25
5.3.1 Menu d –Display............................................................................. 26
5.3.2 Menu r –References and Regulators.................................................. 26
5.3.3 Menu I –Inputs and outputs............................................................. 27
5.3.4 Menu P –Parameters ....................................................................... 27
5.3.5 Menù C........................................................................................... 28
6. MAINTENANCE AND FAULTS ............................................................. 29
6.1 Safety regulations ....................................................................................29
6.2 Maintenance ............................................................................................29
6.3 Trouble shooting ......................................................................................29
6.4 Repair.....................................................................................................30
7. General Data..................................................................................... 31

PAG.3/32
Important Notice
Our experience has shown that, if the information and recommendations contained in
this Operating Instructions are observed, the best possible reliability of our products is
assured.
The data contained herein purports solely to describe the product and it is not a
warranty of performance or characteristics. It is with the best interests of our
customers in mind that we constantly strive to improve our products and keep them
abreast of advances in technology. This may, however, lead to discrepancies between
a product and its "Technical Description" or "Operating Instructions".
This document has been carefully prepared and reviewed, however should in spite of
this the reader find an error, he is requested to inform us at his earliest convenience.
It is scarcely possible for the operating instructions for technical equipment to cover
every eventuality, which can occur in practice. We would therefore request you to
notify us or our agent in the case of all unusual behavior that does not appear to be
covered by these operating instructions.
It is pointed out that all local regulations must be observed when connecting and
commissioning this equipment in addition to these operating instructions.
We cannot accept any responsibility for damage incurred as a result of mishandling
the equipment regardless of whether particular reference is made in these operating
instructions or not.
We lay particular stress on the fact that only genuine spare parts should be used for
replacements.
All rights with respect to this document, including applications for patent and
registration of other industrial property rights, are reserved. Unauthorized use, in
particular reproduction or making available to third parties, is prohibited.

PAG.4/32
1. SAFETY INSTRUCTIONS
1.1 General
The safety instructions shall be followed during installation, commissioning, operation and
maintenance of the excitation system. Read all instructions carefully before operating the
device and keep this manual for future reference.
Required Qualification
Personnel involved in installation work and commissioning of the S2014 must be familiar,
specially instructed and informed about the residual danger areas according to the regulations
currently in force.
Operating personnel is not permitted to work at the control system.
Specially instructed personnel must only carry out maintenance and repair work.
The maintenance personnel must be informed about the emergency shutdown measures and
must be capable of turning off the system in case of emergency.
The maintenance personnel must be familiar with the accident prevention measures at their
workplace and must be instructed in first aid and fire fighting.
It is the owner’s responsibility to ensure that each person involved in the installation and
commissioning of the S2014 has received the appropriate training or instructions and has
thoroughly read and clearly understood the safety instructions in this chapter.

PAG.5/32
1.2 Safety Instructions
The safety instructions always appear at the beginning of each chapter and/or precede
any instruction in the context where a potentially dangerous situation may appear.
The safety instructions are divided into five categories and emphasized by the use of
the following layout and safety signs:
DANGER!
This symbol indicates an imminent danger resulting from
mechanical forces or high voltage. A non-observance leads to
life-threatening physical injury or death.
WARNING!
This symbol indicates a dangerous situation. A non-observance
may lead to bad or life-threatening physical injury or death.
CAUTION!
This symbol indicates a dangerous situation. A non-observance
may lead to physical injury or cause damage to the converter.
NOTICE!
This symbol emphasizes important information. A non-
observance may cause damage to the converter or to objects
close to it.
IMPORTANT!
This symbol indicates useful information. Not to be used to
indicate dangerous situations.

PAG.6/32
2. DEVICE DESCRIPTION
2.1 Introduction
S2014 is an automatic voltage regulator of the latest design for controls alternators
excitation. The unit contains the most advanced microprocessor technology together
with SCR semiconductor technology (Silicon Controlled Rectifier).
A practical and simple-to-operate panel on the unit is used for all control operations.
In addition, user friendly software facilitates commissioning allows optimization of
operation.
The mechanical construction is compact and robust.

PAG.7/32
2.2 Area of application
This advanced-design automatic voltage regulator is used for the excitation of
synchronous machines. This unit is only suitable for this one area of application.
The regulator can also be switched over to function as a automatic voltage regulator,
power factor or reactive power regulation.
SM= Synchronous Machine
E = Exciter
PMG = Permanent-Magnet-Generator
Generator excitation from generator
output
Generator excitation with
PMG or external supply.
Replacement of voltage regulators for
generators with direct-current
excitation machines.

PAG.8/32
2.3 Hardware
Structure:
The device is built into a plastic casing, depending on the nominal output current some
models have an aluminum base for cooling.
The connection terminals are integrated on top of the circuit boards.
Power electronics:
The power part is fitted with SCR semiconductors.
The average value of the output voltage is always positive. The output is protected
against short-circuit by a fuse.
Control elements:
The operating keys and the display are located on the circuit board.
The connector of the communication port it is located on the regulator.
Installation:
The site of installation must be dry and free of dust.
Mounting:
The regulator must be installed inside the machine or inside the control panel in order
to be protected against accidental contacts. For fastening the regulator, 4 MA through-
screws should be tightened with self-locking nuts in two corners holes.
It is recommended to bind the regulator back on a metal plate for better dissipation.
Connection diagram:
2.3.1 Control elements and interfaces
Carrying out settings on the unit
The displays and the four keys are sufficient to allow complete operation.
All settings can be carried out directly on the unit without additional equipment.
Configuration of inputs and outputs;
Parameter setting;
Display of important measuring values.

PAG.9/32
Interface with PC
Parameter setting and also optimization is possible using the user-friendly software
S2014 Config for Microsoft Windows.
Connection cable with RS-485 Half-Duplex (two wire)
Configuration of inputs and outputs;
Parameter setting;
Display of important measuring values;
Parameter File upload or download.
Note: The interface is not isolated from the power supply
In order to connect with a pc or other devices an interface isolator
must be used
Terminal blocks
Overview of the device connections

PAG.10/32
CN2 –RS 485 Serial Interface
CN3 –Control connections
1
GND
C1
Common
2
GND
C2
Up reference adjust
3
--RESERVED-
C3
Down reference adjust
4
LINK –
C4
Feedback Parallel
5
LINK +
C5
±5V reference adjust
6
--RESERVED-
C6
Potentiometer reference adjust 1Kohm
7
--RESERVED-
C7
+6V Aux
8
--RESERVED-
C8
N.C.
Note: the reserved pins have to be
left unconnected
C9
OUT (E)
C10
OUT (C)
FX1 - Power connections
FX2 - Current sensing inputs
AUX
AUX
S1
C.T. input
COM
Common
S2
C.T. input
+Ecc
Excitation output +
-Ecc
Excitation output –
Vsense
Voltage sensing input
PE
PE
2.3.2 Device connections: power and high voltage
Terminal
designation
Signal
Specifications
Power electronics
supply
AC input voltage
single-phase
80÷300 Vac
40÷500 Hz
Measurements inputs
1 Generator voltage
0÷500 Vrms
Not isolated: one terminal
common with power supply
1 Generator current
0÷5 Arms
galvanic isolation
Excitation output
Excitation voltage
3÷300 VDC
Excitation current
0÷8 A (16 A for 10 s)

PAG.11/32
2.3.3 Device connections: control signals and interfaces
Terminal
designation
Signal
Specifications
Digital inputs
3 programmable
digital inputs
4mA
Up / Down / programmable function
not isolated from power supply
Digital outputs
1 programmable
digital output
Load Max 65mA 24Vdc

PAG.12/32
Analog inputs
2 analog inputs
input ±5V for reference adjust
not isolated from power supply
● potentiometer 1KΩ 5% for ref. adjust
● not isolated from power supply
Communication
1 RS485
Modbus RTU and proprietary protocols
half duplex
not isolated from power supply

PAG.13/32
2.4 Software
2.4.1 Operating modes
Bump less changeover between all modes of operation
Automatic voltage regulator (Auto)
Regulates the terminal voltage of the
synchronous machine.
Note: Current measurement is optional:
used only for droop compensation
PF or Var regulation (PF, Var)
Regulates the power factor or reactive
power of the synchronous machine.

PAG.14/32
3. DESCRIPTION OF THE FUNCTIONALITY
3.1 Soft Start
Thanks to the configuration of the following parameters, it is possible to set up the excitation
ramp of the alternator as follows:
Parametro
Descrizione (short)
Descrizione
P.100
Gen rate voltage
Generator rated voltage [V]
P.101
Max Gen. voltage
Generator maximum voltage [%]
R.002
Ramp slope
Ramp slope [%/s]
A soft start is done only in the AVR mode
3.2 Droop Compensation
The compensation function (K> 0) is used in order to cancel the voltage drop in the possible
transformer, which is downstream connected with the alternator.
The ‘droop’ function (K<0) is to be used if you are operating with more generators in parallel.
It is applied a voltage reduction according to the output of the reactive power.
This function is enabled only in AVR mode. The input must be configured as follows:I00x = 4.
Parametro
Descrizione (short)
Descrizione
P.400
Voltage comp K
Voltage comp [%]

PAG.15/32
3.3 ‘Keep alive’
This feature allows to maintain a minimum excitation current even when the alternator
frequency drops below the minimum (P.130).
The parameter P.250 is the one, where the minimum excitation current must be set up; this
setting must be done based on the power source (set up to 0 if the power is from PMG or
auxiliary).
The AVR S2014 works to maintain an input auxiliary voltage of 60V in order to feed itself.
Parameter
Description (short)
Description
P.250
KeepAlive min I
Keep Alive minimum I
P.130
Gen. V/f min freq
Generator V/f minimum frequency
Having P.250 = 0 under the alternators minimum frequency the output will be
disabled.

PAG.16/32
3.4 Limiters
3.4.1 V/f Limiter
The V / Hz limit is active during the voltage control phase. It works by limiting the alternator
voltage as the frequency falls below the maximum frequency set in parameter P.131. This
operation can avoid an alternator over-flushing in case of a reduction of laps.
Parameter
Description (short)
Description
P.100
Gen. rated V
Generator rated voltage [V]
P.130
Gen. V/f min freq
Generator V/f minimum frequency [Hz]
P.131
Gen. V/f Max freq
Generator V/f maximum frequency [Hz]
P.132
V/f slope
Generator V/f slope
3.4.2 Minimum excitation current
The limit of minimum excitation current is only active when the machine is in parallel with
Main.
It represents the minimum excitation current below which the machine cannot work.
Parameter
Description (short)
Description
P.002
F. UE Lim
Field UE Lim. [%]
r.900
OE/UE Lim reg KP
OE/UE Lim. Reg. KP
r.901
OE/UE Lim reg TI
OE/EU Lim. Reg. TI

PAG.17/32
3.4.3 Maximum excitation current
The limit of maximum excitation current operates a limitation on the maximum excitation
current.
Parameter
Description (short)
Description
P.000
F. rated I
Field rated I [A]
P.001
F. OE Lim
Field OE Lim. [%]
P.032
F. OE Lim time
Field OE Lim time [s]
r.900
OE/UE Lim reg KP
OE/EU LIM reg KP
r.901
OE/UE Lim reg TI
OE/EU LIM reg TI
3.4.4 Minimum capability
The curve of minimum capability represents the reactive power limit absorbed by the machine.
It is determined by interpolating 5 data:
Parameter
Description (short)
Description
P.160
Q –lim @ P 0%
Limit Q- a P=0%
P.161
Q –lim @ P 25%
Limit Q- a P=25%

PAG.18/32
P.162
Q –lim @ P 50%
Limit Q- a P=50%
P.163
Q –lim @ P 75%
Limit Q- a P=75%
P.164
Q –lim @ P 100%
Limit Q- a P=100%
3.4.5 Massima capability
The curve of maximum capability represents the reactive power limit delivered by the machine.
It is determined by interpolating 2 data:
Q+ limit a P=0% P.170 [%]
Q+ limit a P=100% P.171 [%]
Parameter
Description (short)
Description
P.170
Q + lim @ P 0%
Limit Q+ a P=0%
P.171
Q + lim @ P 100%
Limit Q+ a P=100%

PAG.19/32
4. REFERENCES AND REGULATIONS
AVR [Automatic Voltage Regulator]
FCR [Field Current Regulation]
PF/VAR Control

PAG.20/32
4.1 Field Current Regulation (FCR)
This functioning mode allows to control the regulator output
current. In this case the regulator controls only the output current
to the regulator excitation terminals without considering what
happening externally.
This functioning mode could become useful during the regulator
commissioning phase or in case of the eventual failure search.
Parameter
Description
Note
r.000
F. I digital
% compared to P.000
r.002
Ramp slope [s]
%/s
r.250
Field I Reg KP
r.251
Field I Reg TI
r.010
Delta Ref calibrator
%
r.011
Delta Ref analog
%
r.012
Delta ramp slope
%/s
4.2 Automatic voltage regulator (AVR)
The regulator controls automatically the output voltage to generator terminals.
This is the main functioning mode.
The AVR function is active when the parameter P300 = 1 is set and when the configured input
I00X = 4 is closed.
Parameter
Description
Note
P.100
Generator rated voltage
V rms
r.002
Ramp slope [s]
%/s
r.350
Generator V Reg KP
r.351
Generator V Reg TI
r.010
Delta Ref calib
%
r.011
Delta Ref analog
%
r.012
Delta ramp slope
%/s