文件名称:
萨姆森SAMSON 3760 型气动和电气定位器安装操作手册（英文版）.pdf
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详细说明：萨姆森SAMSON 3760 型气动和电气定位器安装操作手册（英文版）pdf,萨姆森SAMSON 3760 型气动和电气定位器安装操作手册（英文版）Safety instructions
△
the device may only be mounted, started up or operated by trained and ex
perienced personnel familiar with the product
According to these mounting and operating instructions, trained personnel
refers to individuals who are able to judge the work they are assigned to and
and experience, as well as their knowledge of the applicable standards dge
recognize possible dangers due to their specialized training, their knowledge
Explosion-protected versions of this device may only be operated by person
el who have undergone special training or instructions or who are aUr
prized to work on explosion-protected devices in hazardous areas
Any hazards which could be caused in the control valve by the process me
dium, the operating pressure the signal pressure or by moving parts are to be
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 pressure reducing station
Proper shipping and appropriate storage are assumed
Note! The device with a CE marking fulfils the requirements of the Directives
94/ 9/EC (ATEX)and 89/336/ EEC (EMC)
The declaration of conformity can be viewed and downloaded on the Internet
athttp://www.samson.de
EB 8385 EN 3
Versions
Positioner
yee
3760-XXⅩXXX
Explosion protection Without
0
Ex 2G EEx ia C t6 acC to ateX
CSA/F
3
Ex 3G EEx na l t6 acc to ateX
Accessories
Without
0
Inductive proximity switch
Pneumatic
G1/8
connections
1/8 NPT
2
Electri
Without
0
connections
M20×1.5bUe
M20×1.5back
2
Plug connector DIN 43650
Reference variable 0.2 to 1 bar /3 to 15 psi
00
4 to 20 ma with i/
p module 6109
o to 20 mA with i/p module 6112
I to 5 mA with i/p module 6112
4 EB8385EN
Technical data
Travel range
o to 5 0 to 7.7 0 to 1 5 (also see table"Range spring "on page 11)
Reference variable Pneumatic 0.2 to 1.0 bar(3 to 15 psi)
Electric
4 to 20 ma (with i/p module 61 12 also 0 to 20 mA) 1 to 5 mA
Split-range
Internal resistance at +20
0to50‰or
4 to 20 mA: 200 for safe greas, 250 Q for hazardous areas
50to100
O to 20 mA: 200 Q
at.5 and 1 5 mm travel
1 to 5 mA: 850Q
Supply air
1. 4 to 6 bar (20 to 90 psi)
Signal pressure
o to 6 bar(0 to 90 psi)
Characteristic
Linear, deviation from terminal-based conformity<1.5%
Operating direction
Reversible
Hysteresis
≤0.5%
Sensitivity
≤0.1%
Steady-state air consumption
<100 In/h at 0. 6 bar signal pressure and up to 6 bar supply pressure
Air output capacity
1600hn/hat△p14 bar and5000hn/hat△p6bar
Transit times with type 3277 Actuator 120 cm2<2 sec. 240 cm's6 sec. 350 cm< sec
travel 15 mm, signal press. 0.2 to 1 bar)
Permissible ambient temperature
20to+70°C
Down to C with metal cable gland
Down to-40C with metal cable gland and type 6112 i/p Converter
For versions with explosion protection, values specified in the Type Examination
addition
40 to +70 C for versions with pneumatic positioner 3760-00x000 without
inductive limit switch
fluence
Temperature zero point:≤0.03%/°C
span:≤0.03‰/°C
brations:from5t120 Hzand2g≤0.5% Supply air:≤0.‰/1
ariable position when turned 180<3.5%
egree of protection
IP 54 (IP 65 with filter check valve see accessories)
ight
0.6
materials
Housing: polyamide; External parts: stainless steel
Additional electrical accessories
Inductive limit switch
Type SJ2-SN
Control circuit
Values corresponding with the downstream switching amplifier
Differential gap at rated travel
≤1%
EB 8385 EN 5
Design and principle of operation
1 Design and principle of operation The operating direction of the signal press
SIng
The pneumatic or electropneumatic posi
when the input signal increases, depend
tioner ensures a preselected assignment of on the position of the booster which can be
the valve stem position (controlled vari
rotated by 180
able x) to the control signal (reference vari- a change in either the input signal or the
able w). The input signal received from a
valve position causes a pressure change in
control unit is compared to the travel of the the booster. the output pressure pst of the
control valve, and a corresponding pneu
booster moves the plug stem to a position
matic signal pressure output variable)is
corresponding with the given control signal
roduce
reference variable)
The positioner mainly consists of a pneu
The adjustment screws for ZERO (5)and
matic unit including a clamp(10), range
SPAN (8 are used to adjust the lower and
spring(7), diaphragm lever (4)and a boos- upper range value of the input signal
ter( 2)with a double plug(13)
The range spring(7) must be chosen to
The electropneumatic positioner is addition- match both the rated valve travel and the
ally equipped with an electropneumatIc con
nominal span of the reference variable
verter
The positioner is designed for direct attach
ment to the samson Type 3277 Actuators
The control signal from the control unit, pro
vided it is a pneumatic signal, is applied di
rectly to the measuring diaphragm (3 )as
pressure signal pe
Whereas a dC current input signal in the
range of, for example, 4 to 20 mA, is di
rectly passed on to the electropneumatic
converter(i/p converter), where it is con
verted into a proportional pressure sig-
nal pe.
The pressure signal pe produces a force on
the measuring diaphragm(3), which is bal
anced by the force of the range spring (7)
The deflection of the diaphragm (3)
causes
the lever (4) to move the double plug(13)
in the booster(12) follows this motion, pro
UcIng a signal pressure pst
6 EB EN
Design and principle of operation
ero
ply
elI
14
日田日
perating
direction >)or decrease
valve or a similar device is to be attached to
reverse action <
the actuator, the signal pressure hole at the
The same applies when the input signal i de
back of the positioner case must be closed
creases. For direct action >> the signal
To do so, remove the screw installed (park-
ing position in the hole below the signa
pressure decreases, whereas it increases for
reverse action
pressure hole and screw it into the signa
The symbols indicating the operating direc
pressure hole
In this case the signal pressure must be fed
tion are marked on the booster The desired
from the signal pressure connection"out-
symbol must be aligned with the arrow
put"to the actuator via a connecting plate
stamped onto the positioner housing
The switchover plate is no longer used
8 EB 8385EN
Attachment to actuators
Switchover plate
pressure
归
&
seal with
Symb
Mark
Actuator stem extends
Actuator stem retracts
|
Attachment left Attachment right
Attachment left Attachment right
Fig. 3. Signal pressure connection using a switchover plate for 120 pr>
plug,
Signal pressure connection with tubing for 240 and 350 cmf
filter check valve for ip 65
三美AA
⑩
}
」圈
utput 36
Actuator stem extends
Actuator stem retracts
Operating direction > Operating direction <>
perating direction
ing dir
Attachment
Attachment left
Attachment right+>
ig. 4. Mounting position of the positioner for 240 and 350
cm actuators
EB 8385 en 9
Attachment to actuators
If the indicated symbol does not correspond 3. Hook up the range spring between the
with the required operating direction, pro
lever of the clamp and the span adjust
ceed as follows: remove the mounting screw
ment screw, placing it in the outer
and booster. Rotate booster by 180, rein
groove at 5 and 6 mm travel and in the
stall it and secure it with the screw
inner groove at 10.5 and 12 mm travel
Turn ZERO adjustment screw to slightly
Note! If the adjusted operating direction of
tension the spring
an attached positioner must be changed at The range spring of the positioner is as-
a later stage, the mounting positions of the signed to different travels and input ranges
booster and positioner on the valve must be which must be selected according to the
anged as wel
table on page 1 1. the range springs are
marked with different colors
Attachment on the left or right side specifies adjust the positioner before closing the actu
that, when looking onto the switchover plate
ator yoke with the cover plate(see sec
or the signal pressure connection, the posI-
tion 4
tioner must be secured on either the right or
left side of the actuator yoke the sigr
pressure output (output 36)of th
le positioner
△
When making adjustments during
must point to the front towards the connec
operation, the actuator is under
tions Fig
pressure The moving actuator stem
can cause severe injuries to hands
2.2 Installing the clamp
and fingers
Always use tools when working on
After attaching the positioner to the yoke,
e clamp and range spring
the clamp must be secured to the actuator
stem on the opposite side( Fig. 5)
Insert the clamp in the yoke next to the
actuator stem (for 120 cm2 actuators
ilt by 90 prior to inserting it)
2. Plug the clamp onto the actuator stem
and secure it with the clamping screw
Make sure that the clamping screw rests
in the groove of the actuator stem and
that the clamp is aligned at an exact
right angle
10 EB8385 EN
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