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萨姆森SAMSON 3766 型气动定位器安装操作手册（英文版）pdf,萨姆森SAMSON 3766 型气动定位器安装操作手册（英文版）Safety instructions
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The positioner may only be assembled, started up or operated by trained and
experienced personnel familiar with the product
According to these mounting and operating instructions, trained personnel is
referred to as individuals who are able to judge the work they are assigned to
and recognize possible dangers due to their specialized training, their knowl
edge and experience as well as their knowledge of the applicable standards
Explosion-protected versions of this positioner may only be operated by per
sonnel who have undergone special training or instructions or who are auth
prized to work on explosion-protected devices in hazardous areas
Any hazards that could be caused in the positioner by the process medium,
he operating pressure the signal pressure or by moving parts are to b
prevented by means of the appropriate measures
If inadmissible motions or forces are produced in the pneumatic actuator as a
result of the supply air pressure level, it must be restricted by means of a suit
able
supply pressure redUcing station
Proper shipping and appropriate storage are assumed.
Note! Positioners with a CE marking fulfill the requirements of the directives
94/9/EC (ATEX )and 89/336/EEC (EMC). The declaration of conformity can
beviewedanddownloadedontheinternetathttp://www.samson.de
note!
Positioners with model index 3766-x.x.03 and higher are equipped with a hinged cover
without vent connection The required exhaust air connection is now included in the mount
ing accessories. If these positioners are mounted on older actuator models, make absolutely
sure that there is a vent connection If necessary, replace the mounting accessories as well
EB 8355-1EN 3
Design and prine
nciple of operation
1 Design and principle of
Peration Any change of the reterence variable or the
valve stem position cause the pressure to
The pneumatic positioner is used to ensure change upstream or downstream of the
a preselected assignment between the valve booster
stem position (controlled variable)and the the air controlled by the booster(signal
control signal (reference variable) In this
pressure pst)flows through the volume re
process, the output signal from a control de- striction (1 1)to the pneumatic actuator
vice is compared to the travel of the control causing the plug stem to move to a position
valve and a pneumatic signal pressure (out- corresponding to the reference variable
put variable) is supplied to the actuator
The adjustable restrictions Xp(8)and
The positioner consists of the lever for travel Q(11)are used to optimize the positioner
pick-up, the measuring diaphragm, and the control loop
pneumatic control system comprising the
The pick-up lever (1)
and range
spring(4)
nozzle, diaphragm lever( lapper plate),
must be selected to match the rated valve
and the booster
travel and the nominal span of the refer
The positioner is designed either for direct
ence variable
attachment to samson type 3277 Actua
tors or for attachment according to NAMUr Positioner with inductive limit switches
EC605346)
In this version, the rotary shaft of the posi
The positioner can additionally be equipped tioner carries two adjustable tags which ao
with either inductive limit switches and/or a tuate the built-in proximity switches
solenoid valve or a position transmitter
The positioner operates according to the
Positioner with solenoid valve
force-balance principle. The travel, i. e the When the positioner is equipped with a sole
valve position is transmitted to the pick-ur
noid valve the control valve can be moved
over
pin(1.1
etermining the to its fail- safe position regardless of the posi
force of the range spring(4)
tioner's output signal. If a control signal
This force is compared to the force gener
corresponding to the binary signal"o"(off)
ated by the pressure pe at the measuring
is applied to the input, the signal press
diaphragm (5)
ure ps is shut off and the actuator is vented
If either the control signal or the valve posi- the actuator springs move the control valve
tion changes, the diaphragm lever ( 3)
to its fail
safe posiTion.
moves alteratine
g
ne distance to the
If a control signal corresponding to the bi
nozzle(2. 1 or 2.2) depending on the set
nary signal
on) is applied to the input
operating direction
the signal pressure pst is supplied to the ac
The air is supplied to the booster (10 )and
tator. The control valve is in control oper
the pressure regulator (9). The controlled
ation
supply air flows through the Xp restric-
tion(8 )and the nozzle(2. 1, 2.2)against
the diaphragm lever( flapper plate)
4EB8355-1EN
Design and principle of operation
2.1
2.2
5
Tr
d
1.1
6.146.2
8 Xp restriction
2.2 Nozzle <>
9 Pressure regulator
10 Booster
4 Ro
11 Volume restriction
8910
12
5 Measuring diaphragm 12 Solenoid valve (optional
Q
6.16.2
Fig. 2. Functional diagram and inside view
EB 8355-1EN 5
Design and prine
nciple of operation
Positioner with position transmitter
A positioner containing a position transmit-
ter cannot be equipped with integrated limit
switches or an integrated solenoid valve
since the position transmitter requires most
the space inside
The position transmitter is used to ensure a
reselect
tween valve posi
tion, Le valve travel and a controller out
put current signal of 4 to 20 mA
The position transmitter setting allows both
valve end positions"valve CLOSED"or
valve OPen"aswe‖lsdl‖ intermediate po
itions to be indicated. Since the valve posi
tion is always indicated regardless of the po
sitioner' s input signal, the position transmit
ter is a suitable device to check the current
valve posiTion
6EB83551EN
ersions
I Versions
Pneumatic Positioner
pe3766
01
x000
Explosion protection
8‖2 G EEx ia‖CT6acc. to ateX
FM/CSA intrinsically safe/non incendive
Ex ia/Ex n l/lIC T6 IP 65 IECEx TSA australia
‖3 G EEx DAⅢT6ac. to atex
8
Additional equipment
Without
Limit switch. inductive 2x SJ2 SN
2
Analog position transmitter 4.20 mA
60
0
3/2-way solenoid\
Without
6V DC
2
12V DC
24VDC
neumatic connections
4-18
SO228/1-G14
Electrical connections
Without(without additional equipment or solenoid valve)
00
Cable glane
M20x 1.5 blue(plastic)
M20x 1.5 black (plastic)
M 20x 1. 5(nickel-plated brass
2
3
Housing version
miNe
cas
Stainless steel (CrNiMo)
Temperature range
Standard
0
Tmin 2-50C; optional limit switches, solenoid valve
Special version
000
Device functioning only as analog position transmitter 3766-x60000XXx00000
EB 8355-1EN 7
Technical date
1.2 Technical data
Positioner
Travel range, adjustable
Direct attachment: 7. 5 to 30 mm
ding to lEC 60534-6: 7.5 to 120
○ pening angle
Depending on the type of cam disk 30 to 90
Reference variable
e
0. 2 to 1 bar (3 to 15 psi)
4 to 0. 8 bar (6 to 12 psi)
Max, overload limit
2 bar (29 psi)
ply pressure
1. 4 to 6 bar(20 to 90 psi)
Signal pressure pst (output)
Can be limited between approx 2.5 to 6.0 bar (38 to 90 psi)
Characteristic
Deviation from terminal-based conformity 1%
eres
≤0.3%
Sensitivi
≤0.1%
Operating direction
Reversible
Proportional band Xp
<1 to 2.5%(proportional-action coefficient Kp: >100 to 40)
Air consumption
At 1. 4 bar supply pressure
At 6 bar supply pressure
≤230h/h
230 h/h with min adjusted press. regulator
Air delivery
filling the actuator: 3.0 mn /h
8.5 mn/h
ing the actuator: 4.5mn/h
140mn3/h
Permissible ambient
20Cto+80° C with plastic cable gland;-40°to+80° with metal cable gland
temperature
special version down to available
Positioner with position transmitter only -20 to 70oC,
See attached inspection certificates for explosion-protected versions
ences
Temperature: <0. 3 %/10 k Supply pressure: <% between 1. 4 and 6 bar
Vibration: none from 10 to 150 Hz and 4 g
Explosion protection
Type of protection EEx ia lIC T6 (see attached inspection certificate)
Degree ot protection
IP 54(IP 65 by using a filter check valve, see Accessories table)
Electromagnetic
Requirements according to EN 61000-6-2, EN 61000-6-3
compatibility
and NamUR Recommendation 2i are fulfilled
ht
A
1
prox I kg
Inductive limit switches
2 proximity switches
Type SJ2-St
Control circuit
Ratings according to downstream transistor relay
Hysteresis at rated travel
≤1%
8EB 8355-1EN
Technical data
Solenoid valve
Binary direct current signal
Nominal sign
6V DC
12VDC
24VDC
Signal o(no pick-up), DC signal at-25C
≤1.2V
2.4V
4.7V
Signal 1 (safe pick-up), DC signal at +80C
≥5,4V
≥9.6V
≥18V
Max permissible signal
28V
25V
32V
Coil rsistance R; at20°C
2909g
5832g
11714g
Air consumption in steady state, Ks=0. 14 m/h In addition to that of the positioner: "Off<60 h/h; "On"<10 h/h
Closing time for
Type 3277 Actuator cm
240
350
700
For rated travel and 0. 2 to 1 bar
>)or decreas- looking at the signal pressure connection or
ing (reverse action <>
switchover plate) is determined by the re
Thi
is also applies when the reference varI-
quired operating direction of the positioner
able decreases: direct action > causes the
1.e.≥>or<>.
signal pressure to decrease, reverse ac
tion < causes the signal pressure to in
crease
On the turnboard (7), the operating direc
tion is indicated by symbols ( direct >
reverse <>
Depending on the position of the turnboard
the adjusted operating direction and the as
sociated symbol become vISIb
10EB8355-1EN
