ELECTRIC ACTUATORS - YOO SHIN E&I CO., LTD.

ELECTRIC ACTUATORS
A104/02

2
USER’S
GUIDE
SUMMARY
CHOOSING
THE RANGE
CHOOSING
THE
CONTROL
FIELDBUS
p4 Analysis
p6 Environment
p8 Operation type
p9 Fail safe
p10 Choosing the range
p12 Mechanical and electrical features
p16 The possibilities
p17 Comparison
p18 Integral control
p20 Signalling options
p21 Communication by fieldbus

The electric actuator, initially designed to operate
valves and dampers has now become a maintenance
and control tool.
The integration of the control elements directly inside
the actuator provides for a command perfectly
adapted to the various functions of the device.
The data of its internal sensors are conveyed by a
fieldbus, informing the users of the valve operating
conditions and enabling remote modification of
some parameters.
The user can thus modify the operating parameters
locally and without opening the covers, providing
for a real “plug and play”.
Ranges suited to the need
Depending on the element to be driven, the electric
actuator shall be designed so as to meet the requirements
of its operating environment. Data such as
the degree of water tightness, the desired explosion-proof
protection and also the presence of certain
corrosive agents must be perfectly known by
the user and taken into account.
Requirements can be of several types : for instance,
electrical actuators intended for nuclear plants
shall feature high resistance to earthquakes or
extreme temperatures.
Operating conditions are a key factor and the design
itself depends on requirements such as the type
of operation : on/off or modulating, the number of
operations (3000 or 1 million) or the precision of
positioning (low or high). With the L. BERNARD
classification, users can easily define their needs.
Moreover, a fail-safe system is available for the
users, even with an electric actuator.
Choice of control depends on process
During installation, users can choose to integrate
3
USER’S
GUIDE
THE ELECTRIC
ACTUATOR
the control boxes to the electric actuator or to
remotely install them into control cabinets. A series
of controls are proposed to the users on all ranges.
The integral version, adapted or not to modulation
provide for local or remote controls. The smart versions
combine the advantages of the classic integral
versions with the flexibility offered by the
microprocessor : maintenance, automatic adjustment,
etc.
Communication by fieldbus is possible whatever
the range or control selected.
As the fieldbus is now available on a growing number
of facilities, large volumes of data can be transferred
while considerably reducing the on-site
wiring costs. Several Bus interfaces are available
whatever the electric actuator and its control.
Thus, the choice of an electric actuator is critical as
regards the reliability of the industrial process but
also the optimum operation at commissioning as
well as throughout the device lifetime.
The L. BERNARD products have been designed to
be tailored to the required needs with the best quality/cost
combination. They are manufactured
according to recognized quality standards :
As the L. BERNARD products are constantly
enhanced, please check the specifications when
placing your orders.

4
USER’S
GUIDE
CHOOSING
THE RANGE
Analysis
Four questions to be asked for determining
the most suited range :
1. TYPE OF MOVEMENT OF THE DEVICE TO BE DRIVEN
Type of device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Movement
Butterfly valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Quarter-turn
Ball and Plug valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Quarter-turn
Dampers and louvers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Quarter-turn
Globe valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multiturn
Pinch and diaphragm valves . . . . . . . . . . . . . . . . . . . . . . . . Multiturn
Gate or knife valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Linear
2. TYPE OF ENVIRONMENT
Site of installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Actuator enclosure protection
Normal environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Watertight
Hazardous areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Explosion proof
Nuclear sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nuclear
Corrosive atmosphere . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Special

5
USER’S
GUIDE
3. TYPE OF OPERATION OF THE DEVICE TO BE DRIVEN
CHOOSING
THE RANGE
Analysis
Type of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Actuator function
Open or close the full stroke, . . . . . . . . . . . . . . . . . . . . . . . . On-Off
on average 20 to 30 times/day.
Select intermediate positions, Modulating
with good precision (better than 2 %) . . . . . . . . . . . . . . . . . Class III
on average 360 times/day.
Select intermediate positions, Modulating
with high precision (better than 1 %) . . . . . . . . . . . . . . . . . . Class II
on a permanent basis every 2 or 3 seconds.
Fast positioning Modulating
with an excellent precision (0,5 % or better) . . . . . . . . . . . . Class I
and continuous movement.
4. SAFETY POSITION
Safety requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Type of actuator
In case of power supply failure,
the valve can remain in the last position . . . . . . . . . . . . . . . Stay put
without any danger.
In case of control signal failure, Actuator with automatic
the valve should move automatically . . . . . . . . . . . . . . . . . . emergency action
to the safe position.
In case of a complete power failure,
the valve should move automatically . . . . . . . . . . . . . . . . . . Fail safe
to the safety position.

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USER’S
GUIDE
CHOOSING
THE RANGE
Environment
If the actuator is :
Inside a building
Outdoors under shelter
Outdoors
Risk of temporary submersion
(less than 30 mn and less than 1 m deep)
Risk of temporary submersion
(time lapse and depth to be defined)
On-shore
Off-shore
In case of special constraints :
Hazardous areas
Nuclear sites
Corrosive environment
(chemical products, alumina, etc, ...)
Recommanded actuator protection
Weatherproof IP 65 or NEMA 4
Weatherproof IP 65 or NEMA 4
+
Weatherproof IP 67 or NEMA 4
+ Epoxy paint +
polyurethane finishing
Weatherproof IP 67 or NEMA 6
+ special paint +
Weatherproof IP 68 or NEMA 6P
+ special paint +
Weatherproof IP 66 or NEMA 4X
+ marine protection +
Weatherproof IP 66 or NEMA 4X
+ offshore protection +
= Anti-condensation heater
Explosion proof
ATEX or NEMA
Actuator qualification
according to RCC-E and IEEE
Special

The European directive 94/9/CE, applicable from
the 30th of June 2003, states the conditions to be
met by the equipment items for use under poten-
GROUP I
Underground
parts of mines
Our explosion proof products have been designed
for use in GROUP II, Category 2 or 3 G (D) areas.
These products shall, among other requirements,
undergo a CE examination of the type corres-
Equipment with electric
connection in increased
safety “e” (tight terminal
box).
The remaining parts of
the electric equipment
are in explosion-proof “d”
enclosure.
7
9
Hazardous areas
EUROPEAN STANDARD ATEX
GROUP II
Other areas
under explosible
atmosphere
I Combustible
gases and
vapours
II Combustible
dusts
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USER’S
GUIDE
CHOOSING
THE RANGE
Environment
tially explosive atmosphere.
It classifies the installation areas according to
groups and categories :
CATEGORY 1 : Areas in which explosive atmospheres
are present continuously or frequently.
CATEGORY 2 : Areas in which explosive atmospheres
are likely to occur.
CATEGORY 3 :
Areas in which explosive atmospheres
are unlikely to occur or, if they do occur,
are likely to do so only infrequently or for
short period only.
Protection by flame-proof
enclosure. Connection is
achieved inside the
enclosure. Enclosure is
resistant to internal
explosion without flame
path.
Group B : Hydrogen
Group C : Ether, Ethylene,...
Group D : Butane, Propane,...
Group E : Metal dust
Group F : Coal dust
Group G : Flour and other
dusts
G/ gas or vapour
D/ dust
ponding to the sections of the standards CENELEC
EN 50014, 50018, 50019 applicable for each
product :
EEx (e) d II C T6
Explosionproof actuator
EEx ed
NORTH-AMERICAN STANDARDS : NEMA RATINGS
Group I : Equipment for
underground mining.
Group II : Equipment for
explosive atmosphere
other than mining.
A : butane, propane,...
B : ethylene,...
C : hydrogen, acetylene
1 : normal
conditions
2 : abnormal
conditions
Maximum surface
temperature
T1 = 450 °C
T2 = 300 °C
T3 = 200 °C
T4 = 135 °C
T5 = 100 °C
T6 = 85 °C
Explosionproof actuator
EEx d or NEMA 7 or NEMA 9
NEMA Class Group Division T4
Maximum
surface
temperature
T1 = 842 °F
T2 = 572 °F
T3 = 392 °F
T4 = 275 °F
T5 = 212 °F
T6 = 185 °F

8
USER’S
GUIDE
CHOOSING
THE RANGE
Operation type
The requirements of the process determine the
characteristics of an actuator.
A modulating actuator has to be fully adapted to
the duty given by the modulating loop. According to
the duty or the function frequency, the actuator
technology and its cost will be different.
Within the range of actuators produced by L.
BERNARD, the users can choose among four
types of operation.
ON/OFF
● The actuator has been designed to operate from
an extreme position to another with intermediate
positions, if needed.
● The motor is capable of starting 360 times per
hour with a duty cycle of 30% and an ambient
temperature under 40°C. This rate decreases
when temperature rises.
● The actuator is capable of performing approximately
15 to 20 operations a day.
CLASS III MODULATING
Open
Close
CLASS III
Time
● The actuator is able to reach an intermediate
position with a sufficient precision (better than
2%).
● The motor is able to start 1200 times per hour
with a duty cycle of 50%, as to say a start every
3 seconds. This starting frequency allows the
process to stabilise a position, but shall not be
kept permanently.
● A class III actuator is designed for an average of
360 changes of position a day.
Technology : A class III actuator is selected in the
On/Off actuators range.
CLASS II MODULATING
Open
Close
● The actuator is able to reach an intermediate
position with a good precision (better than 1%).
● The motor is able to start 1800 times per hour
with a duty cycle of 100%.
● A class II actuator is designed to move every 2 or
3 seconds.
Technology : Actuator with high mechanical efficiency,
special modulating motor, solid state relay
control.
CLASS I MODULATING
Open
Close
CLASS II
CLASS I
Time
Time
● The actuator is able to reach an intermediate
position with a precision of 0,5% or better.
● The actuator can move the valve, full stroke, very
quickly.
● A class I actuator is designed to move permanently.
Technology : Actuator with high mechanical efficiency,
brushless electric motor with speed regulation.

The fail-safe devices are used to provide for the
safety of the fixtures when the external power source
to the actuator is no longer supplied.
APPLICATION FIELDS
They include :
● All the fields where the interruption of the actuator
power requires the automatic switching of the
driven device to a safe postion.
● All the facilities where the risks are such that driving
the device to its safe position must be possible
at any time even in the absence of external
power.
Example : storage and distribution of gas and dangerous
liquids, fire protection systems, protection
of chemical facilities, air conditioning and ventilation
of hazardours areas.
IMPORTANT FUNCTIONS
ACTUATOR WITH RETURN SPRING
The actuator operates under normal conditions,
actuated by an electric motor, which simultaneously
drives the device to be motorised and a high
resistance spiral spring.
What is FAIL SAFE ?
A solenoid which is
continuously power
supplied releases the
device + spring assembly
when its power supply
is interrupted, for
whatever reason.
When power is restored,
the actuator automatically
comes back to
its position, according to
the commands received.
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USER’S
GUIDE
CHOOSING
THE RANGE
Fail safe
ACTUATOR WITH INTEGRATED BATTERY
The actuator is a standard D.C. equipment item, to
which is added an integrated control card and a
battery. It is operated under normal conditions with
an external power supply which charges the battery
at the same time.
In case of short-cut, the
actuator automatically
returns to its safe position
with the help of the
integrated battey.
Once the power is restored,
the actuator can
operate under normal
conditions and the battery
recharges.
The activation of an emergency signal triggers the immediate opening or closing of the backup device
without the need of any external power source.
This signal can be activated following :
● an ABNORMAL EVENT (fire, overflow, ...)
● AUTOMATIC CONTROL
● OPERATOR’S ACTION
● or the ABSENCE OF POWER

ENVIRONMENT
10
USER’S
GUIDE
CHOOSING
THE RANGE
WITHOUT
FAIL SAFE
POSITION
STANDARD
EXPLOSION
PROOF
OPERATION
NUCLEAR
ON / OFF
&
MODULATING
CLASS III
MODULATING
CLASSES II & I
ON / OFF
&
MODULATING
CLASS III
MODULATING
CLASS II
TYPE OF MOVEMENT
QUARTER-TURN
Torque Torque MULTITURN LINEAR
< 4 000 N.m. > 4 000 N.m.
SD
Catalogue
Modulating
Catalogue
SD
Catalogue
Modulating
Catalogue
ST
Catalogue
Modulating
Catalogue
ST
Catalogue
Modulating
Catalogue
Nuclear Nuclear
Catalogue
ST
Catalogue
Modulating
Catalogue
ST
Catalogue
Modulating
Catalogue
ST ST
Catalogue
Modulating
Catalogue
ST
Catalogue
Modulating
Modulating
Catalogue

ENVIRONMENT
WITH
FAIL SAFE
POSITION
STANDARD
EXPLOSION
PROOF
OPERATION
ON / OFF
MODULATING
CLASS III
ON / OFF
MODULATING
CLASS III
11
USER’S
GUIDE
TYPE OF MOVEMENT
CHOOSING
THE RANGE
QUARTER-TURN LINEAR
FQ
Catalogue
Modulating
Catalogue
FQ
Catalogue
Modulating
Catalogue
FL
Catalogue
Modulating
Catalogue
FL
Catalogue
Modulating
Catalogue

12
USER’S
GUIDE
CHOOSING
THE RANGE
Mechanical and
electrical features
QUARTER-TURN
Often installed in enclosed
spaces, the quarter-turn electrical
actuator must be as
compact as possible. The irreversibility
of the actuator is
necessary in order not to supply
power on a permanent
basis even when the device is shutdown and to
guarantee that the valve stays in the required position.
Moreover, for operation in environments generating
strong vibrations, it is essential that the gear
modules be well sized for a better resistance.
Lastly, even if the travel limitation provides for the
stop of the actuator, it shall also be equipped with
mechanical stops in order to protect the driven
device in the case of a manual operation with the
handwheel.
Our choice : – compact
– self-locking with a worm/
quadrant gear
– large gear modules
– adjustable mechanical stops
MULTITURN
The multiturn electric actuators
can either be mounted
directly or with additional
reduction gears. In order to
meet the requirements of
their numerous functions, a
wide range of torque and speed values are required.
They must also offer full irreversibility, whatever
the operating speed, in order to maintain the
valve in position. For the user’s safety, it is highly
recommended that the handwheel does not rotate;
priority must also be given to the electric control,
without clutch system for high torque actuators.
Geardrives
Our choice : – wide range of speed and
torque values
– easy-to-use
– self-locking at all speed
– non-rotating handwheel with
priority to electric control
For high torque values, our SERMATIC system
combined with a differential gear on the output
shaft enables driving either by a motor or a
handwheel without any clutch system, providing for
considerable enhancement and simplification of the
geardrive.
MODULATING
As regards modulation, the
most important criteria are
precision and long-term availability.
The use of small motors
considerably reduces the
inertia.
Furthermore, a high reduction gear directly installed
at the motor output provides for a better control
of the actuator.
Lastly, to reduce the play in the handwheel mechanism
to a minimum, the use of a system with
manual priority is better adapted.
Our choice : – precision with small motors
– quality / price ratio
– long term availability
thanks to our epicycloidal
gear system
LINEAR
The L. BERNARD range of linear actuators is
obtained by adding a movement conversion system
to the multiturn actuator.

Electric motors
The choice of an operation type determines the
selection of a motor for each function.
The IEC 34 recommendation has defined several
types of actuator standard duty cycles for determining
the use conditions of an electric motor.
IEC 34 STANDARD
S1 : Continuous duty
Operation with constant load over a sufficient duration for reaching
a thermal equilibrium.
S2 : Short time duty
Short time operation, total cooling between each start.
S3 : Intermittent periodic duty
The starting current has no significant effect on temperature rise.
To be followed by the max. operating time.
S4 : Intermittent duty with starting
Repetition of cycles including :
● starting period D,
● period of constant speed N,
● rest period R.
MODULATING
To be followed by the duty factor in %, as well as the number of starts per hour.
Our choice : S4
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USER’S
GUIDE
CHOOSING
THE RANGE
Mechanical and
electrical features
The only duty cycle corresponding to the required
actuator operation is S4. Its parameters will be
optimised to fit each application.
DUTY OBJECTIVE TYPE OF MOTOR TYPE OF DUTY FREQUENCY
● Operating time Asynchronous AC : 360 starts/hour
ON / OFF ● Successive starts 3 phase or single phase S4 - 30 % DC : 60 starts/hour
Direct current
● Operating time Asynchronous
CLASS III ● Repetition of starts 3 phase or single phase S4 - 50 % 1 200 starts/hour
(Direct current possible)
● High number Asynchronous 3 phase
CLASS II l of starts (Single phase possible) S4 - 100 % 1 800 starts/hour
● Low inertia
● Speed variation Brushless direct current
CLASS I ● Continuous operation with servo drive S4 - 100 % NO LIMITS
General technical data
of AC motors
➜ SQUIRREL CAGE type
➜ Insulation CLASS F
➜ Watertight enclosure
➜ Built-in thermal protection
General technical data
of DC motors
Applicable only for ON / OFF and Class III duty
➜ COMPOUND type winding
➜ Insulation CLASS F
➜ Watertight enclosure
➜ Built-in thermal protection

14
USER’S
GUIDE
CHOOSING
THE RANGE
Mechanical and
electrical features
Depending on the markets and types of facilities,
the features of the emergency manual control, one
of the key functions of the actuator, can be very different.
However, several features are of prime significance,
mainly :
● a well adapted gear ratio, in order to limit the
number of turns required to operate the valve,
● a reliable use safety in order not to endanger the
users,
● full availability.
Manual control with electrical priority is required in
most of the technical specifications. However, the
following 2 principles must be obeyed :
● it must be possible to operate the manual control
in any case,
● the number of turns on the handwheel must not
be too significant.
CORRECT SIZED HANDWHEEL GEARING
SAFETY
Manual operation
Example 1 : On a pressurised
steam circuit, the valve closes
using the torque limiter. When
the torque is high, the use of a
dog coupling is not safe enough
as the force to be applied to the
clutch lever for switching to
manual mode is high.
Example 2 : Depending on the technology used,
the number of turns on the handwheel can vary
from 30 to more than 500 turns, in order to drive a
DN500 quarter-turn valve with a torque of approximately
2500 Nm. Thus, the stacking of reduction
gears can inhibit the safety function of the manual
control.
In conclusion, there is not one solution for all the
applications but different techniques adapted to the
real needs.
QUARTER-TURN MULTITURN
Type No. of turns Torque Ratio
OA 9 to 21 < 60 Nm 1/1
AS < 800 Nm 8 to 11 < 300 Nm 1/2
AS > 1 000 Nm 50 to 216 > 300 Nm 1/*
BS 14 * according to torque
UX 8 to 11
QUARTER-TURN
MULTITURN
Modulating Classes II, I
Full handwheel rotating at low speed.
Non rotating handwheel, with electrical priority, for high torque values.
Non rotating handwheel, with electrical priority.
Non rotating handwheel, motor automatically switched off during manual operation.

The use of a patented cam holder system has the
following advantages :
● easy setting, without any special tools
● vibration proof
● precise proportional indication
The large diameter cam block includes four cams
which can be adjusted separately on the overall
travel. By simply pushing the adjusting slot of a
L. BERNARD design of torque limiters is of proven
technical superiority, offering :
● full reliability,
● ease of adjustment,
● high precision,
Travel limitation
The torque is always measured on non moving
parts, thus avoiding risk of wear.
In the case of kinematics chains with planetary
gear drives, the torque is measured on the external
crown by helical springs.
The torque is no longer applied when the motor is
stopped, thus releasing the mechanical parts. If the
Torque limiters
15
USER’S
GUIDE
CHOOSING
THE RANGE
Mechanical and
electrical features
cam, the latter is released and can be freely positioned.
When the adjusting slot is released, the
cam is automatically locked. As no screw tightening
is needed, the system is not sensitive to vibrations.
In smart versions, the cam block is replaced by an
absolute position sensor with optical absolute
encoder.
signal must be maintained, electrical or mechanical
memorisation is available as an option.
In the case of differential chains, the torque is
higher and will be measured directly on the actuator
shaft, at the differential manual end.
On the ST range actuators, the torque limiter is
always memorised mechanically and a proportional
torque adjustment system which can be adjusted
locally or remotely is available, depending on
the control versions adopted.
Note : the memorised torque limiter function is
always included in the versions with built-in electronics,
such as INTEGRAL+, POSIGAM+, MODU-
GAM+ and INTELLI+.

16
USER’S
GUIDE
CHOOSING
THE CONTROL
The possibilities
Two main types of commands are available :
● fieldbus command
● wire-by-wire command
VERSION CONTROL
STANDARD
The control unit is external to
the actuator. It receives information
from the actuator and
directly controls the electric
motor.
CLASSIC
The control unit and power
contactors are integrated to
the actuator. It executes the
orders received by the supervisor.
DIGITAL
The control unit is digital and
integrated to the actuator. In
addition to the standard
control and monitoring functions,
it provides for numerous
adjustment, monitoring
and maintenance functions,
locally or remotely.
ON / OFF
The travel limitation and
torque limiter contacts transmit
the information to the
external control system which
controls the motor.
PROPORTIONAL
In addition to the contacts, the
position transmitter indicates
the position of the valve and
provides for proportional
control managed by users.
ON / OFF
The information from the
contacts are directly processed
by the integrated control
unit and relayed to the outside
for signalling.
PROPORTIONAL
The position transmitter
directly informs the integrated
positioner, providing for a proportional
control managed by
the actuator.
The position and torque sensors
are absolute, digital and
proportional. Numerous
control variants are possible
and can be programmed from
the outside of the actuator.
All the L. BERNARD ranges are compatible with
both options. The various FIELDBUS interfaces
are listed at the end of this guide.
The user can choose among three versions, two of
them being integral.
COMMANDS
Wire-by-wire Fieldbus
not
applicable

REMOTE
CONTROL
LOCAL
CONTROL
INTERNAL
PROTECTION
SIGNALLING
SETTING AND
COMMISSIONING
MONITORING
AND MAINTENANCE
■ Standard
Standard and “smart” controls
17
USER’S
GUIDE
CHOOSING
THE CONTROL
Comparison
Standard integrated Digital integrated
control control
Pulse command ■ ■
Maintained signal ■ ■
Proportional ■ ■
Positioner version Positioner version
ESD ■ ■
Auxiliary ■ 2 commands,
Local command inhibition 9 possibilities
Timer Option ■
Pad-lockable selectors ■ ■
Digital text display – ■
Power indication – ■
Timer Option ■
Fuses ■ ■
Automatic phase monitoring ■ ■
Motor thermal switch ■ ■
Torque limiter memory ■ ■
Amount of information available 16 23
Amount of information to be selected
4
+ 3 in option
4
+ 3 in option
Fault monitoring relay ■ ■
Number of listed faults 8 12
Remote position signalling Option Option
Configuration access Intrusive Non intrusive
Configuration means Jumpers By external selectors
Or with laptop
Or through fieldbus
Torque position setting
Mechanical Digital
Type of setting
Download of complete setting
On position On position
On torque On automatic torque
– With laptop
Or through fieldbus
Monitoring of internal components – ■
Monitoring of performance – ■
Monitoring of torque values
– ■
Transfer of torque /
position curves – ■
Actuator activity monitoring
- Total operating time – ■
- Number of starts – ■
- Handwheel action – ■

18
USER’S
GUIDE
CHOOSING
THE CONTROL
Integral control
Standard actuator including travel and torque limit
switches requires additional electrical equipment to
be integrated into a process, this involves extra
costs for the study, the setting and the commissioning.
L. BERNARD offers a range of actuators with
integrated control enabling the engineering to
benefit from a simple and standardised command
interface.
Start-up is made easier by the presence of local
controls and can be activated by simply connecting
power, thus saving time.
The functions can be easily configured on the
actuator for on-site installation at lower costs.
“Minigral+” “Minigam+”
This compact electronic board has the
ability to control single-phase actuators
with a power less than 300 W.
● MINIGRAL+ and MINIGAM+ common functions :
- Stop on travel or torque limit switches (prohibits
restarting)
- Open / Close signalling
- Configurable rotational direction
● ON / OFF command : MINIGRAL+ version
- Open / Close command
- Power, command and signalling using 1 wire
● Proportional command : MINIGAM+ version
- Input signal 4-20mA, 0-20mA, 0-10V, 2-10V
- Remote position signal 4-20mA, 0-20mA, 0-10V,
2-10V
● Fault monitoring relay option
CLASSIC INTEGRAL CONTROL
For small single phase
actuators
DIGITAL INTEGRAL CONTROL
Non intrusive
configuration + diagnostic
and maintenance
“Integral+” “Posigam+”
“Modugam+”
For all powers
configurable commands
and signalling
This control offers a large choice of
functions.
● Functions common to 3 versions :
- Stop on travel or torque limit switches (prohibits
restarting)
- Signalling by 4 configurable relays
- Configurable fault relay
- Automatic phase monitoring
- Configurable rotational direction
● ON / OFF control : INTEGRAL+ version
- Open / close control by contact or voltage
- Local control
- Emergency control and local control inhibition

● Proportional control : POSIGAM+ and MODU-
GAM+ versions
The POSIGAM+ version is designed to be installed
on Class III modulating actuators, and the
MODUGAM+ version on the Class II actuators.
- Input signal 4-20mA, 0-20mA, 0-10V, 2-10V
- remote position signal 4-20mA, 0-20mA, 0-10V
- Open / close control by contact or voltage
- Emergency control and selection of proportional
control or ON / OFF
● Options :
- Signalling by 3 additional relays
- Inertia rate meter (to prevent pressure surge)
- Local control
- Local signalling indicator lights
- Remote position signal
● Proportional control : PRECIGAM version
In order to meet the requirements of modulating
Class I regarding extreme operating conditions, the
PRECIGAM version is available within the L.
BERNARD range.
Associated with a Class I actuator, the PRECIGAM
unit enables fast and precise positioning.
With this advanced technology, accelerations,
speed and torque with servo control of a brushless
DC motor with Samarium Cobalt magnets can now
be controlled.
The power module uses the pulse with modulating
technique for an optimum output.
“Intelli+”
19
USER’S
GUIDE
CHOOSING
THE CONTROL
Integral control
The INTELLI+ control is used for
diagnostic and preventative maintenance.
INTELLI+ performs real time
monitoring of the actuator and its
performance levels through specific sensors and a
precise processing algorithm.
Numerous functions are available to the users in
INTELLI+ for helping them in their diagnostics and
for programming the maintenance of their valves.
INTELLI+ also guarantees to the users an optimum
availability of their industrial facilities.
● Main functions :
- Open / close control by contact or voltage
- 2 configurable auxiliary controls (example :
emergency control)
- Signalling by 4 configurable relays
- Configurable fault monitoring relay
- Automatic phase monitoring
- Adjustment and setting without any tools and without
opening any cover
- Dialogue with the user by multilingual menus
- Local indicator lights and back lit display
- Position monitoring by digital absolute encoder
- Monitoring of the real torque transmitted to the valve
by digital absolute encoder
- Recording of the max. torque values for each
operating zone
- Increase of the operating time (to prevent pressure
surge)
- Auto-diagnostic of the actuator and display of the
alarms
- Recording of the actuator activity
(number of starts, operating time, activity over the last
12 hours)
- Communication for Laptop, for diagnostic, configuration
and recording
● Options :
- Signalling by 3 additional relays
- Remote position and torque signal
- Proportional control with analogue interface :
=> input signal 4-20mA, 0-20mA, 0-10V, 2-10V
=> remote position signal 4-20mA, 0-20mA, 0-10V,
2-10V

20
USER’S
GUIDE
CHOOSING
THE CONTROL
Signalling options
CONTACTS
Standard selector limit switches
● DC rated :
Voltage Resistive load Inductive load
24 V 16 V 5 A
48 V 2,5 A 1,2 A
127 V 0,8 A 0,35 A
230 V 0,6 A 2,2 A
● AC rated :
Voltage Resistive load Inductive load
Up to 250 V 16 V 2 A
● Optional :
– DPDT (selector switch without common point)
– Nitrogen filling
– Inductive
– Watertight
– Explosion proof
POTENTIOMETER
Valve position image, the remote position signal must not be
underestimated.
● Model 200 for ON / OFF or Class III actuators
Power 1 Watt - Plastic track - 1 Kohm value -
Others on request - Single or double type.
● Model 210 for actuators of Class II or Class I
Power 2 Watts - Plastic track, nearly infinite resolution
- 1 Kohm value - Single or double type.
TAM : ELECTRONIC POSITION TRANSMITTER
The TAM transmitter remotely sends the position
of the driven device, via a 4-20 mA or 0-20 mA
current signal, irrespective of the line length and
with protection against interference. The TAM
includes a 1 Kohm potentiometer associated with
an electronic module.
● Technical data :
– Supply voltage : 12 to 32 V DC (rectified, filtered
or stabilised)
– Max. admissible load : 750 Ohm at 24 V
– 2 wire connection : 4-20 mA signal
– 3 or 4 wire connection : 4-20 mA or 0-20 mA
signal
– Linearity : 0,5 %
– Permitted temperature acceptance : -40°C to
+70°C
TIN : CONTACTLESS POSITION TRANSMITTER
As the TAM, the output signal of the TIN transmitter
is equal to 4-20 mA or 0-20 mA. The inductive
type sensor has the advantage of being unaffected
by contact wear.
● Technical data :
– Supply voltage : 18 to 33 V DC (rectified, filtered
or stabilised)
– Max. admissible load : 600 Ohm
– 2 wire connection : 4-20 mA signal
– 3 or 4 wire connection : 4-20 mA or 0-20 mA
signal
– Linearity : 0,5 %
– Permitted temperature : -10°C to +70°C

The fieldbus is the mean commonly used for
exchanging information and commands with several
actuators or sensors over a single electrical line.
Each actuator requires an individual power supply
and a communication line which, in the case of the
fieldbus, is common to a set of actuators.
The signal is encoded and an address is assigned
to each actuator. Therefore, each actuator can
identify those commands which are intended for it
and the data transmitted by the actuator can be
identified.
The advantage of the fieldbus connection is, on the
one hand, that several actuators can be connected
over the same line and on the other, that the
amount of data transmitted by each actuator can
be increased without impacting wiring costs.
A fieldbus which establishes connection for several
actuators over a single line is distinct from an encoded
4-20 mA system which is capable of carrying
data superimposed over a 4-20 mA signal for a
single actuator or sensor.
A WIDE RANGE OF FIELDBUS SYSTEMS
As a wide range of fieldbus systems exist, an
actuator can only connect to a bus line if it is equipped
with the fieldbus specific interface. There are
“proprietary” systems, where a single manufactuer
supplies the necessary interfaces, and “open” systems
where various manufacturers can supply
interfaces.
With regard to “proprietary” systems, L. BERNARD
offers the DUPLINE system, branded DS200.
Although proprietary, this system is not L. BER-
NARD-specific, as the manufacturer is Carlo
Gavazzi. The user can therefore procure additional
21
USER’S
GUIDE
COMMUNICATION
BY FIELDBUS
interfaces directly from Carlo Gavazzi, and is therefore
not dependant on the actuator supplier.
A “proprietary” system always includes the actuators
and their bus interface, as well as the bus
controller located at the line head-end, used for the
dialogue with the PLC which controls the process.
Communication with the PLC also uses a bus
sytem. In general MODBUS is used.
In the electric actuator domain, “open” systems
mainly include :
● PROFIBUS
● MODBUS
● FIELDBUS FOUNDATION
With an “open” system, the actuator or sensor supplier
usually limits its offer to the equipment equipped
with the bus interface. The bus controller is
generally integrated to an extension of the PLC.

22
USER’S
GUIDE
COMMUNICATION
BY FIELDBUS
PROFIBUS DP FIELDBUS
The complete range of L. BERNARD actuators can
be equipped with the PROFIBUS DP fieldbus interface.
(Caution : a PROFIBUS DP interface can not
be connected to a PROFIBUS FMS or PROFIBUS
PA system).
Each actuator is offered as an integral version,
meaning it comes complete with contractors and is
handled by an electronic board. This part may
come as a separate unit. Both integral versions of
the L. BERNARD range can be used : INTE-
GRAL+ or INTELLI+, with the addition of the
“PROFIBUS DP 32 I/O” interface for the INTE-
GRAL or the “PROFIBUS DP data transfer” interface
for the INTELLI+.
A PROFIBUS line can control up to 30 actuators.
Extra line repeaters are required to increase the
number of actuators connected to a given line. The
maximum line distance is 1.2 km, and more with
repeaters.
Only the actuator is supplied with its PROFIBUS
DP interface. This actuator can connect to any
PROFIBUS DP fieldbus even if other units are
connected. The only requirement is not to exceed
the number of connection points which is 30 max.
Each actuator or sensor counts as a connection
point, regardless of the amount of data transmitted.
Automate
Modbus RTU
Dupline Master
Module
Modbus RTU
MODBUS RTU FIELDBUS
Actuators of the L. BERNARD range equipped with
the INTELLI+ command can accomodate the
MODBUS interface.
A MODBUS line can control up to 30 actuators.
Extra line repeaters are required to increase the
number of actuators connected to a given line.
Only the actuator is supplied with its MODBUS
interface. This actuator can connect to any MOD-
BUS RTU fieldbus even if other units are connected.
The only requirement is not to exceed the
number of connection points which is 30 max.
Each actuator or sensor counts a a connection
point, regardless of the amount of data transmitted.
MODBUS RTU FIELDBUS FOR ACTUATOR
AND DUPLINE FIELDBUS
Actuators directly equipped for MODBUS operation
can be associated on a given MODBUS line as
described above with the DUPLINE MASTER
MODULE or DS200 fieldbus as communication
from the PLC is in both cases over the MODBUS.
Dupline

This configuration offers the advantage of providing
a highly cost-effective link for part of the actuators
(connected to the DUPLINE sytstem) while some
actuators direclty connected to MODBUS transmit
all the data useful for monitoring the equipment and
preventative maintenance.
DEVICENET FIELDBUS
Actuators of the L. BERNARD range equipped with
the INTELLI+ command can accommodate the
DEVICENET interface.
A DEVICENET line can control up to 63 actuators.
Only the actuator is supplied with its DEVICENET
interface. This actuator can connect to any DEVI-
CENET fieldbus even if other units are connected.
The only requirement is not to exceed the number
of connection points which is 64 max. Each actuator
or sensor counts as a connection point, regardless
of the amount of data transmitted.
Up to 10 km length without
loss of performance
Up to 20 actuators
per line
Up to 16 lines starts
DUPLINE FIELDBUS
23
USER’S
GUIDE
COMMUNICATION
BY FIELDBUS
The complete range of L. BERNARD actuators can
be equipped with the DUPLINE fieldbus interface.
Each actuator is offered as an integral version,
meaning it comes complete with contactors and is
handled by an electronic board. This part may
come as a separate unit.
Both integral versions of the L. BERNARD range
can be used : INTEGRAL+ or INTELLI+, with the
addition of the “DS200” interface for the DUPLINE
system. A bus controller, installed at the line headend,
is supplied to control the assembly.
Communication with the PLC is via MODBUS.
Two systems are available. A single version is
used to control a line of 31 actuators from the
DUPLINE MASTER MODULE, or a redundant version
from the DS200 CONTROLLER, used to
control up to 320 actuators, i.e. 20 actuators per
line. The maximum line distance is 10 km.
Pressostat
Local control box
PC
PLC
Pump
Electro-valve

AT YOUR SERVICE
OVER THE WORLD
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E-mail : mail@bernard-actuators.com
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Tokyo 163-0429
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3 rd Floor, SungWon Building + 82 2 3478 7089
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SEOUL 137-832
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3542 AR UTRECHT bernard.benelux@12move.nl
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MARCO + 48 22 86 49 421
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Singapore 659480
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06570 - ANKARA
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BEDFORD MK 44 3WG
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15740 Park Row, Suite 100 + 1 281 578 27 97
HOUSTON - TEXAS 77084 bernard.sales@bernardcontrols.com