Leroy-Somer DIGISTART STV 2313 Instruction Manual

DIGISTART STV 2313
Electronic Soft starter
Installation and maintenance
Réf. 1528 - 4.33 / c - 12.97
This document must be
forwarded to the end user
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Microcontroller
ADC
ADC
Mains
synch.
f
ee
db
ac
k
Gate
drive
RAM
EPRO
M
EEPRO
Rx
Tx
a
ck
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uts

2
Electronic soft starter
DIGISTART STV 2313
NOTE
LEROY-SOMER reserves the right to modify the specifications of its products at any time in order to incorporate the
latest technological developments. The information enclosed in the present document may therefore change without notice.
LEROY-SOMER gives no contractrual guarantee whatsoever concerning the information published in this document and
cannot be liable for any error it may contain nor for any damage arising from its use.
CAUTION
For safety of people or goods, the soft starter must not be used for hoisting purposes.
For the own safety of the user, this soft starter must be connected to an approved earth (terminal B).
If an accidental start of the installation represents a risk for personnel or the machines to be driven, it is imperative that the
power supply of the drive is fitted with an isolating switch and a circuit-breaking device (power contactor) controllable through an
external safety system (emergency stop, fault detector).
The soft starter is fitted with safety devices which can stop the controller in the event of faults and thus stop the motor. The mo-
tor itself can be jammed for mechanical reasons. Finally, voltage fluctuations, and particularly power cuts, can also cause the
motor to switch off.
The cure of the causes of the shutdown can lead to restarting, which may be dangerous for certain machines or installations.
In such cases, it is essential that the user makes appropriate arrangements against restarting after unscheduled stops of the
motor.
The soft starter is a component designed for integration within an installation or an electrical machine : it is therefore of the res-
ponsibility of the user to make sure the system complies with current standards.
LEROY-SOMER declines all responsibility whatsoever should the above recommendations not being complied with.
........................................

• Throughout the manual, this symbol warns
against consequences which may arise from
inappropriate use of the soft starter, since electrical
risks may lead to material or physical damage as
well as constitute a fire hazard.
1 - General
According to their degree of protection, soft starters can
during operation comprise bare live parts, sometimes
moving or rotating, as well as hot surfaces.
Unjustified removal of protections, incorrect use, faulty
installation or inappropriate operation could represent a
serious risk to personnel and machinery. Refer to the
manual for additional information.
Any work related to transportation, installation,
commissioning and maintenance must be carried out by
experienced and qualified personnel (see CEI 364 or
CENELEC HD 384, or DIN VDE 0100 and national
specifications for installation and accident prevention).
According to these basic safety instructions, qualified
personnel means persons competent to install, mount,
commission and operate the concerned product and
possessing the relevant qualifications.
2 - Use
Soft starters are components designed for integration wi-
thin an installation or an electrical machine.
When integrated in a machine, commissioning is
forbidden as long as conformity with Directive
89/392/CEE (Machinery Directive) has not been
checked. It is also necessary to comply with standard EN
60204, which especially stipulates that electrical
actuators (which include soft starters) cannot be regar-
ded as circuit-breaking devices and by no means as iso-
lating switches.
Commissioning can take place only if the requirements
of the Electromagnetic Compatibility Directive
(89/336/CEE, modified by 92/31/CEE) are fulfilled.
Soft starters fulfil the requirements of the Low Voltage
Directive 73/23/CEE, modified by 93/68/CEE. The har-
monized standards of the DIN VDE 0160 series in
connection with standard VDE 0660, part 500 and EN
60146/VDE 0558 are also applicable.
Technical specifications and instructions concerning
connection conditions specified on the rating plate and in
the supplied documentation must absolutely be
respected without fail.
3 - Transportation, storage
All instructions concerning transportation, storage and
correct handling must be respected.
Climatic conditions specified in the technical manual
must be respected.
4 - Installation
Installation and cooling of equipment must comply with
the specifications stated in the manual supplied with the
product.
Soft starters must be protected against excessive stress.
More particularly, avoid any damage to parts and/or mo-
dification of insulation distances between components
during transportation and handling. Avoid touching elec-
tronic components and contact parts.
Soft starters include parts which are sensitive to elec-
trostatic stress and can easily be damaged if handled in-
correctly. Electrical components must not be exposed to
mechanical damage or destruction (possible risks to
health !).
5 - Electrical connection
When work is carried out on the powered-up soft star-
ters, national specifications for accident prevention must
be respected.
Electrical installation must conform with the appropriate
specifications (for instance wire section, protection with
circuit-breaking fuse, connection of protective
conductor). Refer to the documentation for more detailed
information.
Instructions for an installation complying with
electromagnetic compatibility requirements (such as
screening, earthing, presence of filters and correct
mounting of cables and conductors) are outlined in the
documentation supplied with the soft starter. These in-
structions must always be respected even if the speed
controller has the CE mark. The manufacturer of the
installation or of the machine is responsible for the
conformity with the limits given in the EMC legislation.
6 - Operation
Installations incorporating soft starters must be fitted with
additional protection and monitoring equipments speci-
fied in the current relevant safety regulations, such as
law on electrical equipment, specifications for accident
prevention, etc…Modifications to soft starters using
control software are allowed.
After the soft starter has been powered down, active
parts of the equipment and live power connections must
not be touched immediately as the capacitors may still
be charged. In view of this, refer to the warnings marked
on the soft starters.
During operation, all doors and protections must remain
closed.
7 - Service and maintenance
Refer to the manufacturer's documentation.
This document must be forwarded to the end user.
3
Electronic soft starter
DIGISTART STV 2313
SAFETY AND OPERATING INSTRUCTIONS CONCERNING soft starter
(According to low voltage directive 73/23/CEE modified by 93/68/CEE)

This manual describes how to commission the DIGISTART STV 2313 digital starter. It gives details of all procedu-
res which should be adopted when working on the starter and shows extension options.
4
Electronic soft starter
DIGISTART STV 2313
PREFACE
parallel shaft
helical bevel
planetary gears
COMPABLOC 2000
ORTHOBLOC 2000
PLANIBLOC 2000
STV 2313
FR-START
ES-START RV-START
Electronic starter
Brake
Proximity switch
A.C.
tacho-generator
D.C.
tacho-generator
CDC-START
Removable
console
COM-START
Serial link RS 485
MODBUS
Induction motor
Gearboxes
Communication (option) Standard extensions
Options
Coupure réseau
Démarrage trop long
Thermique thyristors
Absence de phase
Microcoupure
Thermique moteur
Sur puissance
Sous puissance
Défaut interne
DEFAUTS : CODE CLIGNOTANTETATS : CODE FIXE
MODE / MEM.
@/ DATA
RESET
Rotor bloqué
Thermique dissipateur
Thyristor(s) en court circuit
Thyristor(s) ouvert(s)
Inversion sens de rotation
Nombre de démarrages limité
Inhibit
Autres défauts (voir notice)
Absence réseau
Moteur hors tension
Accélération
En fonctionnement
Décélération
STV 2313
123456789101112
Run Stop Com Reset Com Inhibit
DIGISTART
ES-START RV-START
FR-START
COM-START
ES-START
CDC - START
Mem
RUN
PAR
MODE
7.28 - : no
ANLG REF:offs I?
STOP
RESET

Pages
1 - GENERAL INFORMATION
1.1 - General operating principle.................................................................................. 6 to 8
1.2 - General designation of the DIGISTART............................................................... 9
1.3 - Main characteristics.............................................................................................. 9
1.4 - Dimensions and weight........................................................................................ 10 to 12
2 - MECHANICAL INSTALLATION
2.1 - Inspection on arrival............................................................................................. 13
2.2 - Unpacking............................................................................................................. 13
2.3 - Installation precautions......................................................................................... 13
2.4 - Mounting............................................................................................................... 13
3 - CONNECTIONS
3.1 - General recommendations................................................................................... 14
3.2 - Terminal blocks.................................................................................................... 14 - 15
3.3 - Power connections............................................................................................... 15 - 16
3.4 - Control electronics supply connections................................................................ 16
3.5 - Remote control connections................................................................................. 17
3.6 - Standard connections........................................................................................... 18
3.7 - Special connections.............................................................................................. 19 - 20
3.8 - Radio-frequency interference............................................................................... 21
4 - COMMISSIONING
4.1 - Setting procedure................................................................................................. 22
4.2 - Pushbuttons/display presentation......................................................................... 22
4.3 - Status indication................................................................................................... 23
4.4 - Switching on control electronics........................................................................... 23
4.5 - Programming........................................................................................................ 23 to 27
4.6 - Switching on power stack..................................................................................... 28
4.7 - Starting................................................................................................................. 28
4.8 - Settings lock......................................................................................................... 28
4.9 - Reverting to factory settings................................................................................. 28
5 - FAULTS / DIAGNOSTICS
5.1 - Possible causes of malfunction............................................................................ 29
5.2 - Trip indication....................................................................................................... 29
5.3 - List of trip codes and possible causes.................................................................. 30 - 31
6 - MAINTENANCE
6.1 - Care......................................................................................................................32
6.2 - Spare parts list ..................................................................................................... 32 - 33
7 - DIGISTART OPTIONS
7.1 - Console " CDC - START ".................................................................................... 34
7.2 - Input/Outputs module " ES - START ".................................................................. 35
7.3 - Speed feedback module " RV - START "............................................................. 35
7.4 - D.C injection module " FR - START "................................................................... 35
7.5 - Power fuses " UR - START "................................................................................ 36
7.6 - IP 20 kit " IP - START "......................................................................................... 36
7.7 - Communication module : COM - START............................................................. 36
7.8 - Keypad cable........................................................................................................ 36
7.9 - Other options........................................................................................................ 36
8 - SUMMARY OF SETTINGS..................................................................................... 37
5
Electronic soft starter
DIGISTART STV 2313
CONTENTS

1 - GENERAL INFORMATION
1.1 - General operating principle
The DIGISTART is a multi-function electronic system
controlled by a 16 bit microcontroller designed for use
with all three phase cage induction motors.
6
Electronic soft starter
DIGISTART STV 2313
It ensures progressive starting with :
- Reduced starting current,
- Smooth and steady acceleration obtained by monito-
ring the current absorbed by the motor
Extra DIGISTART functions by the addition of several
option possibilities
After start-up, the DIGISTART provides the additional
features described below:
1.1.1 - Functional block diagram
STARTING
OPERATING
DECELERATING
MAINS
MOTOR
DIGISTART
Progressive starting with current limitation.
"Kickstart" possibility
Programmable relay
Protection of DIGISTART, motor and system against
the following faults :
- Mains loss,
- Excessive start time,
- Thyristor thermal protection,
- Phase loss,
- Mains dip,
- Motor thermal protection,
- Overload, underload,
- Software fault
- Locked rotor
- Heat sink thermal protection
- Thyristor diagnostics
- Reversal of rotation
Natural stop or controlled deceleration.

1.1.2 - Construction
7
Electronic soft starter
DIGISTART STV 2313
1.1.3 - Description :
The DIGISTART STV 2313 comprises :
- 1 power module depending on rating,
- 1 identical control module for the whole range.
The power module has the following components :
- 6 power thyristors mounted on a heatsink ;
- 1 forced ventilation (ref. 2) and its supply, for the coo-
ling (*) ;
- 1 or 3 thermal probes mounted on the heatsink to pro-
tect the thyristors (*) ;
- 2 current transformers (ref. 1) for protection and current
regulation ;
- 1 power board (ref. 3) for the thyristor gate drive, mains
measurement and control board interface ;
- 1 control electronics supply board (ref.4) with fuse and
connection terminals ;
- 1 autotransformer (ref. 5) for forced ventilation supply
(**).
The control module contains a board which mainly
comprises :
- the remote control connection terminals,
- the output relays,
- the microcontroller and its peripherals,
- the electronic regulation circuits,
- 3 setting pushbuttons,
- 1 seven segment display
- the serial link.
(*) : except STV 2313. 37.
(**) : for STV 2313 ≥145.
Control
module
Power
module
37 to 86
Power
module
145 to 250
Power
module
365 to 900
1
3
1
1
2
3
4
5
1
3
4
5
1
41
2

1.1.4 - Operating diagram
8
Electronic soft starter
DIGISTART STV 2313
L1
L2
L3
T1/U
T2/V
T3/W
=
=
=
=
Microcontroller
ADC
ADC
N/L
XF1
230V
400V T1
Mains
synch.
Current
feedback
Gate
drive
Supply
RAM
EPROM
EEPROM
Programmable
relay
RUN
STOP RESET INHIBIT
RS 485
interface
Serial link
Option
modules
Rx
Tx
MAINS SUPPLY
MOTOR
K1 K2
D.C Injection
Speed feedback
Mem
@
Reset
Programming
&
Inputs/Outputs
1.1.5 - Setting and operating mode
- The basic version of the DIGISTART has a minimum of
settings and is adjusted by a 3 pushbutton keypad. Its
operation is made easy by a 7 segment display of para-
meters and their values.
- An optional console extends the DIGISTART's func-
tions and transforms the basic product into a very
sophisticated top of the range starter. Programming, dia-
gnostics and parameter visualization are made via an
alpha-numeric 32 digit LCD display.

1.2 - General designation of the DIGISTART
Example : STV 2313 - 14 60
• STV 2313 = DIGISTART Generation 3
• 14 = Mains voltage code, with
- 14 : 208 V to 500 V
- 16 : 500 V to 690 V
9
Electronic soft starter
DIGISTART STV 2313
• 60 = Current rating code, with
- 37 = 37A
- 60 = 60A
- .........
- 900 = 900A
1.3 - Main characteristics
RATING 37 60 86 145 211 250 365 530 700 900
Voltage 2 possibilities - Code 14: 208V to 480V (-15% +10%) three-phase
- Code 16: 500V to 690V (-15% +10%) three-phase
Frequency Self-adjusting 50/60 Hz ±5%
Separate input from power stack
Voltage 230V (-20% +15%) or 400V (-15% +10%) single phase
Frequency Self-adjusting 50/60 Hz ±5%
Consumption 30VA 80VA 80VA 150VA 150VA 150VA 250VA 250VA 250VA 250VA
Rated motor
current In 37A 60A 86A 145A 211A 250A 365A 530A 700A 900A
Maximum Nb of starts
per hour at 3 In 101010101055555
Maximum start
time at 3 In 30s 30s 30s 30s 20s 20s 20s 20s 20s 20s
Ingress protection IP 00
Electromagnetic
compatibility
and susceptibility
Ambient temperature From -0°C to +40°C.
Maximum temperature 60°C Derating of 1.2% per °C above 40°C
Storage temperature from -20°C to +60°C
Altitude Less than 1000 metres Derate current by 0.5% for each 100 m above 1000 m
Relative humidity
(non condensing) In accordance with IEC 68-2-3 and IEC 68-2-30
Shock In accordance with IEC 68-2-27
Vibration In accordance with IEC 68-2-6
The DIGISTART rating can be inferior to the rated motor current,
provided that the operating conditions are less severe than those given above
Immunity : complies EN 50082-1 / EN 50082-2 (see § 3.8).
Conducted and radiated emissions : complies EN 55011 (see § 3.8).
Power stack supply
Control supply
Operating conditions
Environmental conditions
Serial link RS 485 serial communication to optionnal : - remote keypad or
- modbus module.

1.4 - Dimensions and weight
1.4.1 - DIGISTART dimensions
10
Electronic soft starter
DIGISTART STV 2313
• STV 2313 : 37, 60, 86.
P3
P5
P4
P6
P2
F.V
L2
L1
H1
H2
H3
L6
E5
E4
E5
E4
H6
H4
H5
D1
L3
L5
L4
•STV 2313 : 145, 211, 250.
L2
L1
H1
H2
L6
H6
L3
H3
L4
L5
E4
E5 E5
E4
D1
P3=P6
P5
P4
F.V
P2

11
Electronic soft starter
DIGISTART STV 2313
•STV 2313 : 365, 530, 700, 900.
L2
L1
H2
H1
H1
50
L3
H3
H4=H5
L5E5E5
E4 E4 L4
L6
H6
D1
P5
P4
P2
P3=P6
AIR FLOW

12
Electronic soft starter
DIGISTART STV 2313
1.4.2 - Table of dimensions (mm) and weight
Weight (kg) 9 9 9 25 25 25 55 55 65 65
Rating STV 2313 37 60 86 145 211 250 365 530 700 900
Mounting H1 336 350 350 385 385 385 300 300 300 300
L1 169 168 168 240 240 240 410 410 410 410
Screw ØD1 66666612121212
Overall H2 355 370 370 405 405 405 803 803 803 803
P2 235 235 235 265 265 265 365 365 365 365
L2 220 220 220 370 370 370 445 445 445 445
Control terminal H3 50 50 50 90 90 90 340 340 340 340
block P3 190 190 190 240 240 240 360 360 360 360
L3 100 100 100 140 140 140 120 120 120 120
Mains H4 15 15 15 20 20 20 42 45 45 45
Power supply P4 65 65 65 165 165 165 210 247 247 247
Connection E4 65 65 65 120 120 120 85 99 99 99
L1, L2, L3 L4 45 45 45 50 50 50 110 97 97 97
Motor H5 15 15 15 20 20 20 35 38 38 38
Power supply P5 65 120 120 185 185 185 47 43 43 43
Connection E5 65 65 65 120 120 120 85 99 99 99
T1/U,T2/V, T3/W L5 45 45 45 90 90 90 60 37 37 37
Control electronic H6 25 25 25 40 40 40 300 300 300 300
Supply P6 150 150 150 240 240 240 360 360 360 360
Connections L6 35 35 35 50 50 50 40 40 40 40
N/L-230V-400V

2 - MECHANICAL INSTALLATION
• The owner or user is responsible for making
sure that installation, operation and service of
the soft starter and its options comply with legisla-
tion relating to the safety of machinery and person-
nel, and with current regulations of the concerned
country.
• The soft starter must be installed in an envi-
ronment free from conducting dust, fumes, corrosive
fluids and gases and from condensation (for instan-
ce class 2 according to UL 840 and CEI 664.1).
The soft starter must not be installed in a hazardous
area unless it is enclosed in a specially adapted
cubicle. In this case the installation must be certi-
fied. • Whithin atmospheres subject to condensa-
tion, it is necessary to install a heating system which
functions when the soft starter is not in use and is
disconnected when the controller is operating.
Ideally this heating system should be controlled auto-
matically.
• The housing of the STV 2313 is not
fireproof : therefore it might be necessary to use a fi-
reproof cubicle.
2.1 - Inspection on arrival
Before installation, check :
- that the equipment has not been damaged in transit (if
damage has occurred, inform the carrier accordingly).
- that the mains supply voltage is compatible with the
DIGISTART.
2.2 - Unpacking
During unpacking, the DIGISTART should never be
manœuvered by means of any items of circuitry, terminal
blocks or wiring.
Handling should always be carried out using the correct
equipment (webbing, slings, lifting rings,…)
2.3 - Installation precautions
The DIGISTART is wall mounted. Install in a vertical po-
sition and observe the following precautions :
- When the DIGISTART is installed in a cabinet, particu-
lar care should be taken to ensure the airflow necessary
for cooling. To achieve this, a sufficient space should be
left around the DIGISTART, particularly around air inta-
kes and outlets.
Leave around 10 cm above and below for 37 to 250
ratings. Leave around 15 cm below and 15 cm each side
of the upper part of the forced ventilation for 365 to 900
ratings.
- Before fixing the DIGISTART in place, ensure that the
position selected is protected against dust, corrosive va-
pour, water splashes, vibration, direct sunlight.
13
Electronic soft starter
DIGISTART STV 2313
- The installation should be carried out with care. Distor-
tion or severe jolting could damage parts of the main cir-
cuit.
- Leave sufficient access around the DIGISTART to faci-
litate connection.
- When the DIGISTART is installed in a cabinet, ensure
that ventilation is sufficient to remove excess heat.
WARNING ! :
In some specific circumstances, the temperature of
the casing of STV 2313 37 to 86A may reach 70°C.
- In cases where several DIGISTART are used, these
should be mounted side by side to prevent overheating,
with at least 10 cm of space between each DIGISTART.
2.4 - Mounting
The 37 to 250 rating DIGISTART are delivered with a set
of mounting feet.
Slide the feet into the grooves provided on the heatsink.
It may be necessary to punch the heatsink to hold the
feet in place and help handling during DIGISTART cabi-
net - mounting.
- For mounting purposes of STV 2313 365 to 900A,
lifting eyes are delivered with the DIGISTART. They
must be used for handling the soft starter.
- Lifting equipement must be adapted to the weight
of the soft starter (see table 1.4.2).
Punching
point
DIGISTART
rating 37 60 86 145 211 250 365 530 700 900
Losses
(W) 135 210 300 570 720 800 1500 2250 3000 4000
F.V flow
rate (l/s) 0 21 21 130 130 130 220 220 300 300

14
Electronic soft starter
DIGISTART STV 2313
3 - CONNECTIONS
• All connection works must be carried out
according to the current legislation of the
concerned country. This includes earthing or
grounding in order to make sure that no directly
accessible part of the controller can remain at mains
potential or any other voltage that may be ha-
zardous.
• The voltages existing on the wires or
connections to the mains, the motor, the braking
resistor or the filter, may cause fatal electric shocks.
Avoid contact in any case.
• The soft starter must be supplied through a
circuit-breaking device in order to disconnect it
safely.• The soft starter power supply must be
protected against overloads and short-circuits.
• The stop function of the soft starter does not
protect against the high voltages existing on the
terminal blocks.
• After the power supply has been cut off, wait
for 1mn before removing protective cover.
• Make sure that voltage of DC bus is lower
than 40V before any work is carried out.
• Check that voltage and current of soft star-
ter, motor and mains are compatible.
3.2 - Terminal blocks
The location of the terminal blocks depends on the
DIGISTART rating
3.2.1 - DIGISTART 37 to 86
L1 L2 L3N/L 230V 400V
T1/U T2/V T3/W
Mains supply
Motor
Control
terminals
Control
electronics
supply
3.1 - General recommendations
- Do not connect any power capacitor between the
DIGISTART output and the motor.
- Use twisted wires for control power supply.
- Use RC circuits on the coils of the relays or contactors
controlled by the DIGISTART outputs.
- Avoid running the control wires and power cables in the
same conduit.
- The connections to the control board must be made
using screened stranded cable. The screen must be
connected to the earth terminal of the DIGISTART (at
one end only).
WARNING ! :
The wires and cables connected to the control and
power terminals of the DIGISTART must be able to
withstand 105°C.
3.2.2 - DIGISTART 145 to 250
T1/U T2/V T3/W
N/L 230V 400V
L1 L2 L3
Mains supply
Motor
Control
terminals
Control
electronics
supply

3.3 - Power connections
• The user is responsible for connecting and
protecting the soft starter according to cur-
rent legislation and regulations of the concerned
country. This is particularly important for the size of
cables, the type and size of fuses, the connection to
earth or ground, the power cut-out, the fault clearan-
ce, the insulation and protection against overcurrent.
• The following tables are given as an indica-
tion, and can by no means serve as a substitute for
current standards.
3.3.1 - Power terminals
a) Description
Power connections comprise : 3 input terminals ; 3 out-
put terminals and 1 earth terminal.
b) Connection characteristics depending on DIGISTART
rating :
37, 60, 86 ................................................................ M6
145, 211, 250 .......................................................... M8
365, 530, 700, 900 M12
15
Electronic soft starter
DIGISTART STV 2313
3.2.3 - DIGISTART 365 to 900
T1/U T2/V T3/W
L1 L2 L3
Mains supply
Motor
Control
terminals
N/L 230V 400V
Control
electronics
supply
Power cable
cross- section
of S
Less
than
16 mm2
From 16
to
35 mm2
Greater
than
35 mm2
Cross-section
of earthing
cable
= S = 16mm2= 0.5 S
3.3.2 - Cross-section of power supply and motor cables
Connected to L1, L2, L3 and T1/U, T2/V, T3/W respectively.
This table must in no way be used to replace currently applicable standards and text. For higher ratings, consult your usual
cable supplier
3.3.3 - Cross-section of earthing cable
(following NF C 15-100 standards)
Rating Cross-section in mm2(separate stranded cable)
6 10 16 25 35 50 70 95 120 150 185 240
37 98 160 255 390 520 690
60 170 260 355 465 640 840
86 175 235 310 430 565 670 770
145 240 315 375 430 510 600
211 Temperature rise limit 250 290 340 400
250 250 290 345
Maximum cable lengths, in metres, for a voltage drop of 5%
Reference Designation Function
L1, L2, L3 DIGISTART
Input
Three phase
power supply
according to
characteristics
(section 1.3)
T1/U, T2/V,
T3/W DIGISTART output Motor (s) supply
Earth DIGISTART casing earth
connection

3.4.3 - Preselection link
For 37, 60 and 86 ratings, ensure that the preselection
link for the required supply voltage is correctly positio-
ned, check also that the supply is connected to the cor-
rect terminals. The preselection link is situated on the
printed circuit board, near the control electronics supply
terminal block.
The DIGISTART is delivered with the link in the 400V
position.
3.4.4 - Earth connection
The earth connection must be made at the product's ge-
neral earthing point (PE)
230V
NC 400V
Supply transformer board
N/L 230V 400V
16
Electronic soft starter
DIGISTART STV 2313
3.3.4 - U.R. fuses (high speed fuses) definition
-Despite the rapid response time of the electronics, the
thyristors must be protected against short-circuit by in-
stallation of correctly sized high speed fuses. Otherwise
the power bridge can be destroyed by such short cir-
cuits.
- The U.R. fuse ratings are determined by the starting
duty and the thyristor I2t.
N.B. :
- The above references are liable to change to take into
account latest developments and cannot be considered
contractually.
- For 37 to 250 ratings, see section 7.5 - Power fuses
UR-START, for 365 to 900 ratings, fuses are mounted as
a standard on the DIGISTART.
3.4 - Control electronics supply connections
• Control power supply must be protected by
using 2 fuses type GI 3.15 A.
3.4.1 - Terminal block description
Comprises 3 screw terminals which accept stranded
cable of 2.5mm2maximum cross-section :
3.4.2 - Cable cross-section
- 37 to 250 ratings : 1.5mm2
- 365 to 900 ratings : 2.5mm2
Use twisted cable for connections.
Reference Function Electrical character.
N/L - 230V Control
electronics 230V ±10% 50/60Hz single phase supply
N/L - 400V and fan
supply 400V ±10% 50/60Hz single phase supply
Rating Characteristics BUSSMANN Ref.
37 125A / 660V 170 M 3463
60 160A / 660V 170 M 3464
86 200A / 660V 170 M 3465
145 315A / 660V 170 M 3467
211 400A / 660V 170 M 3469
250 500A / 660V 170 M 3471
365 700A / 660V 170 M 6461
530 900A / 660V 170 M 6463
700 1400A / 660V 170 M 6467
900 1500A / 660V 170 M 6468
Associated microswitch 170 H 0069

17
Electronic soft starter
DIGISTART STV 2313
3.5 - Remote control connections
3.5.1 - Terminal block description
Located at the bottom of the control module. The terminal block comprises 12 screw terminals which accept stranded cable of
2.5 mm2 maximum cross-section
3.5.2 - Terminal designation
Reference N°of terminal Designation Function/Characteristic
1
2K1 relay ✶ Normally closed - Open on trip Max. voltage 250V AC Switching power : 3A non inductive load
3
4K2 programmable output relay
5 Ground terminal Connection of shielding
Run
Stop
Com
6
7
8
Run - stop control
inputs
For permanent connection:
6-8 linked
7-8 run command: C = Run
O = Stop
For momentary action:
6-8 Run command momentary close
7-8 Stop command momentary open
Reset 9 Trip reset input Momentary close terminals 9
and com.
Com 10 Common terminal Electronic reference voltage
Inhibit 11 Emergency stop input Emergency stop on opening of the link bet-
ween terminals 11 and common. Immediate
and direct inhibiting of thyristors
12 Ground terminal Connection of shielding
Outputs
Inputs
✶This relay becomes programmable using the optionnal remote keypad.
3.5.3 - Cable selection
Remote control connections should be made with shielded twisted cable, the shielding grounded at one end only, by connection
to the ground terminal supplied.

3.6 - Standard connections
3.6.1 - Standard connection diagram
400 V mains supply, momentary Run/Stop control signals
18
Electronic soft starter
DIGISTART STV 2313
F2
F3
F4TC1
KM
KM
HL1
Mains power
supply
L1 L2 L3
DIGISTART STV 2313
Control module
M1
T1/U T2/V T3/W
L1 L2 L3
Power module
2 fuses GI 3.15 A
6 x 32
Reset
F
Recommended
remote control
KM
F3 contacts
in series
PE
Run
Stop
PE
QS
SB1
Power
on
N/L
230V
400V
External
trip
SB2
Emergency
stop
123456 87 9 10 11 12
RUN STOP RESET COM (0V) COM (0V) INHIBIT
3.6.2 - Recommandations
KM : The KM line contactor is used for powering up or
powering down the DIGISTART's power stage. It is
controlled by an external security circuit.
Note 1 : The motor control signals are given by Run-Stop
push buttons connected to the control board terminal
block (terminals 6.7.8).
Note 2 : The high speed fuses (U.R.) F are optional for
37 to 250 ratings. They are delivered with their mounting
accessories (see section 7.5 and 7.6).
If high speed fuses are not used, the isolator QS should
be replaced by a circuit-breaker.
The connections between the fuses and the DIGISTART.
should be as short as possible.
The electronic supply can be given by the power sup-
ply, or by a separate supply. Connections are made to
the terminals provided (N/L-230V - 400V).
Control power supply must be protected using 2 fuses ty-
pe GI 3.15 A (breaking capacity = 200 kA).
For the 37 to 86 ratings, position the link correspon-
ding to the relevant supply voltage.

3.7 - Special connections
3.7.1 - Common examples
19
Electronic soft starter
DIGISTART STV 2313
ALTERNATIVES REMARKS
- It is possible to dispense with a line contactor, if a circuit
breaker or a fused switch of suitable rating is used.
- Opening the emergency stop input link directly inhibits
the thyristors (without pasing via the microprocessor)
- Rate the circuit breaker thermal protection so that the
starting current and duration does not cause a trip.
- Use preferably a failsafe trip coil system.
- The reset of the circuit-breaker or switch should be ma-
nual.
- Set the circuit-breaker's thermal protection to take into
account the starting current and duration.
Mains power
supply
L1 L2 L3
Emergency
stop
DIGISTART STV 2313
L1 L2 L3
F3 contacts
in series
QF
123456 87 9 10 11 12
RUN STOP RESET COM (0V) COM (0V) INHIBIT
Mains power
supply
L1 L2 L3
DIGISTART STV 2313
L1 L2 L3
Emergency
stop
F3 contacts
in series
QF
123456 87 9 10 11 12
RUN STOP RESET COM (0V) COM (0V) INHIBIT
Using a manually controlled circuit-breaker (or a fused switch)
Using a cirtuit-breaker equipped with a trip coil (or a fused switch)

20
Electronic soft starter
DIGISTART STV 2313
3.7.2 - Other connections
Other special connections are available on request, such as :
- Cascade starting of several motors with a single DIGISTART,
- Simultaneous control of several motors with a single DIGISTART,
- Control of 2 speed/2 winding motors,
- Control of 2 speed Dahlander motors,
- Control of a brake motor, etc.
ALTERNATIVES REMARKS
Link terminals 6 and 8 of the control module.
- Give run command via terminals 7 and 8 (KA closed = Run).
- The control system must be designed so that the KA
contact opens if there is a fault.
- Remove plastic obstruction from terminal 230V and use
the N/L- 230V terminals for the control electronics supply
connections.
- Caution : For 37 to 86 DIGISTART ratings, ensure link is
in 230V position.
- It is preferable to connect the control power supply before
the main contactor in order for the control board to remain
energized while the power circuit is open.
- Use an auto-transformer to adapt the available supply to
230V. Remove plastic obstruction from terminal 230 V and
connect the transformer output to the control electronics
supply N/L-230V terminals.
- For auto-transformer sizing, refer to indicated consump-
tions (see section 1.3).
- Please consult LEROY-SOMER for the supply of an auto-
transformer.
- Caution : For 37 to 86 DIGISTART ratings, ensure link is
in 230V position.
- It is preferable to connect the control power supply before
the main contactor in order for the control board to remain
energized while the power circuit is open.
Run/Stop control signals via self-maintained contact
DIGISTART STV 2313
L1 L2 L3
KA
123456 87 9 10 11 12
RUN STOP RESET COM (0V) COM (0V) INHIBIT
230V three-
p
hase mains su
pp
l
y
DIGISTART STV 2313
L1
2 fuses
GI 3.15 A
L2 L3
N/L
230v
400v
Other mains supplies than 230V or 400V
DIGISTART STV 2313
L1 L2 L3
N/L
230v
400v