Samson 3767 Service manual

Electropneumatic Positioner
Type 3767
Fig. 2 · Type 3767Fig. 1 · Type 3767
Mounting and
Operating Instructions
EB 8355-2 EN
Edition April 2011

Contents Page
1 Design and principle of operation. . . . . . . . . . . . . . . . . . . . 4
1.1 Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Attachment to control valve . . . . . . . . . . . . . . . . . . . . . . 10
2.1 Direct attachment to Type 3277 Actuator . . . . . . . . . . . . . . . . 10
2.2 Attachment according to IEC 60534-6 . . . . . . . . . . . . . . . . . 15
2.2.1 Mounting sequence . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.2 Presetting the travel . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.3 Attachment to rotary actuators . . . . . . . . . . . . . . . . . . . . . 19
2.3.1 Mounting the cam follower lever . . . . . . . . . . . . . . . . . . . . 20
2.3.2 Mounting the intermediate piece . . . . . . . . . . . . . . . . . . . . 20
2.3.3 Default setting of the cam disk . . . . . . . . . . . . . . . . . . . . . 22
2.3.4 Reversing amplifier for double-acting actuators . . . . . . . . . . . . . 26
3 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.1 Pneumatic connections. . . . . . . . . . . . . . . . . . . . . . . . . 28
3.1.1 Pressure gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.1.2 Supply pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.2 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.2.1 Switching amplifiers . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.1 Adjusting the positioner at the valve . . . . . . . . . . . . . . . . . . 32
4.1.1 Adjusting the proportional band Xp and air delivery Q . . . . . . . . . 33
4.1.2 Adjusting the actuator: "Actuator stem extends". . . . . . . . . . . . . 33
4.1.3 Adjusting the actuator: "Actuator stem retracts" . . . . . . . . . . . . . 34
4.2 Changing the operating direction . . . . . . . . . . . . . . . . . . . 35
4.3 Adjusting the limit switches. . . . . . . . . . . . . . . . . . . . . . . 36
4.4 Adjusting the position transmitter. . . . . . . . . . . . . . . . . . . . 38
5 Converting and retrofitting the positioner . . . . . . . . . . . . . . . 40
5.1 Converting from electropneumatic to pneumatic . . . . . . . . . . . . 40
5.2 Fitting limit switches . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.3 Fitting a solenoid valve . . . . . . . . . . . . . . . . . . . . . . . . 41
5.4 Removing the solenoid valve . . . . . . . . . . . . . . . . . . . . . . 42
6 Servicing explosion-protected versions. . . . . . . . . . . . . . . . . 42
7 Dimensions in mm. . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Test certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
2EB 8355-2 EN
Contents

EB 8355-2 EN 3
Safety instructions
General safety instructions
4
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
knowledge and experience as well as their knowledge of the relevant stan-
dards.
4
Explosion-protected versions of this positioner may only be operated by per-
sonnel who have undergone special training or instructions or who are au-
thorized to work on explosion-protected devices in hazardous areas. Refer
to section 6 on Servicing explosion-protected versions.
4
Any hazards that could be caused by the process medium, the operating
pressure, the signal pressure or by moving parts of the control valve are to
be prevented by means of the appropriate measures. If inadmissible motions
or forces are produced in the actuator as a result of the supply pressure
level, it must be restricted by means of a suitable supply pressure reducing
station.
4
Proper shipping and appropriate storage are assumed.
4
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 is available on request.

1 Design and principle of
operation
The positioner consists of an electro-
pneumatic converter unit (i/p converter) and
a pneumatic unit equipped with a lever for
travel pick-up, a measuring diaphragm, and
the pneumatic control system with nozzle,
diaphragm lever (flapper plate) and booster.
The positioner is designed either for direct
attachment to SAMSON Type 3277 Actua-
tors or for attachment according to NAMUR
(IEC 60534-6) with an adapter housing.
The positioner can be additionally equipped
with either inductive limit switches and/or a
solenoid valve or a position transmitter.
The DC control signal, e.g. 4 to 20 mA, is-
sued by the control unit is transmitted to the
electropneumatic conversion unit (13) where
it is converted into a proportional pressure
signal pe.
The positioner operates according to the
force-balance principle. The valve travel, i.e.
the valve position, is transmitted to the
pick-up lever (1) over the pin (1.1) and de-
termines the force of the measuring spring
(4). This force is compared to the positioning
force generated by the pressure peat the
measuring diaphragm (5).
If either the control signal or the valve posi-
tion changes, the diaphragm lever (3)
moves, altering the distance to the nozzle
(2.1 or 2.2), depending on the set operating
direction of the positioner.
The air is supplied to the booster (10) and
the pressure regulator (9). The controlled
supply air is fed to the i/p module, then
flows through the Xprestriction (8) and the
nozzle (2.1, 2.2) to finally stream on the di-
aphragm lever (flapper plate). Any change
in the reference variable or the valve stem
position cause the pressure to change up-
stream or downstream of the booster. The
air controlled by the booster (signal pressure
pst) flows through the volume restriction (11)
to the pneumatic actuator, causing the plug
stem to move to a position corresponding to
the DC input signal (reference variable).
The adjustable Xprestriction (8) and volume
restriction (11) are used to optimize the
positioner control loop. The pick-up lever (1)
and the range spring (4) must be selected to
match the rated valve travel and the nominal
span of the reference variable.
Positioner with inductive limit switches
In this version, the rotary shaft of the
positioner carries two adjustable tags which
actuate the built-in proximity switches.
Positioner with solenoid valve
When the positioner is equipped with a so-
lenoid valve, the control valve can be moved
to the fail-safe position regardless of the
positioner's output signal. If a control signal
corresponding to the binary signal "0" (off)
is applied to the input, the signal pressure
pst is shut off and the actuator is vented. The
actuator springs move the control valve to its
fail-safe position. If a control signal corre-
sponding to the binary signal "1" (on) is ap-
plied to the input, the signal pressure pst is
supplied to the actuator. The control valve is
in control operation.
4EB 8355-2 EN
Design and principle of operation

EB 8355-2 EN 5
Design and principle of operation
43 7 8 911
6.1 6.2
13
789101112
6.1 46.2
2.1
3
2.2
5
1
1.1
1.2
Pe
Supply
9
V
Pst
Q
Xp
p
imA
13
Fig. 2 · Functional diagram and inside view
1 Pick-up lever
1.1 Pin
1.2 Clamp
2.1 Nozzle >>
2.2 Nozzle <>
3 Diaphragm lever
4 Range
spring
5 Measuring
diaphragm
6.1 Span adjuster
6.2 Zero adjuster
7 Turnboard
8 Xp restriction
9 Pressure regulator
10 Booster
11 Volume restriction
12 Solenoid valve
(optional)
13 i/p converter
Travel

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
of the space inside. The position transmitter
is used to establish a certain relationship be-
tween the valve position, i.e. the valve travel,
and a controller output signal of 4 to 20
mA. The position transmitter setting ensures
that both end positions "valve CLOSED" or
"valve OPEN" as well as all intermediate
positions can be signalized. Since the valve
position is signalized independently of the
input signal to the positioner, the position
transmitter is a suitable option for checking
the current valve position.
6EB 8355-2 EN
Design and principle of operation

1.1 Versions
EB 8355-2 EN 7
Versions
Electropneumatic positioner Type 3767- x x x 0 1 xxxxxx000
Explosion protection
Without 0 2
II 2 G EEx ia IIC T6 acc. to ATEX 1
FM/CSA intrinsically safe/non incendive 3
II 3 G EEx nA II T6 acc. to ATEX 8
Additional equipment
Without 0
Limit switch, inductive, 2x SJ2-SN 2
Analog position transmitter, 4 to 20 mA* 6 0 0
3/2-way solenoid valve
Without 0
6 V DC 2
12 V DC 3
24 V DC 4
Type of mounting
Standard range spring 0 1
Pneumatic connections
¼-18 NPT 1
ISO 228/1 - G ¼ 2
Electrical connections
Cable gland
M20 x 1.5, blue (plastic) 1 0
M20 x 1.5, black (plastic) 2 0
M20 x 1.5 (nickel-plated brass) 2 1
Housing version
Die-cast aluminum 1
Stainless steel (CrNiMo) 2
Reference variable
4 … 20 mA 1
0 … 20 mA 2
1 … 5 mA 3
Temperature range
Standard 0
Low temperature
Tmin ³–45 °C; optional limit switches, solenoid valve 2 1 2
Special version
None 000
* Available until December 2011

1.2 Technical data
8EB 8355-2 EN
Technical data
Positioner
Travel range, adjustable
Opening angle
Direct attachment: 7.5 to 30 mm
Attachment acc. to IEC 60534-6: 7.5 to 120 mm or
Depending on the cam disk: 30 to 90°
Reference variable
Signal range
Span
Coil reference Riat 20 °C
4 (0) to 20 mA
8 to 20 mA
200 W
1 to 5 mA
2 to 4 mA
880 W
Supply air 1.4 to 6 bar (20 to 90 psi)
Air quality acc. to ISO 8573-1: Max. particle size and density: Class 4,
Oil content: Class 3, pressure dew point: Class 3
Signal pressure pst (output) Can be limited between approx. 2.5 to 6.0 bar (38 to 90 psi)
Characteristic Linear characteristic, deviation from terminal-based conformity £1 %
Hysteresis £0.3 %
Sensitivity £0.1 %
Operating direction Reversible
Proportional band Xp< 1 to 2.5 % (proportional-action coefficient Kp> 100 to 40)
Air consumption With supply air = 1.4 bar: £280 ln/h With supply air = 6 bar: £280 ln/h with
min. adjusted pressure regulator
Air delivery Actuator pressurized: 3.0 mn
3/h
Actuator vented: 4.5 mn
3/h 8.5 mn
3/h
14.0 mn
3/h
Permissible
ambient temperature
–20 to 80 °C with plastic cable gland
–40 to 80 °C with metal cable gland (special version down to –45 °C)
–20 to 70 °C for positioners with position transmitter
See attached certificate for explosion-protected devices
Influences Temperature: £0.3 %/10 K
Supply air: £1 % between 1.4 and 6 bar
Vibration: None between 10 and 150 Hz and 4 g
Explosion protection Type of protection EEx ia IIC T6, see attached certificate
Degree of protection IP 54 (upgradable to IP 65 using a filter check valve, see Accessories table)
Electromagnetic
compatibility Complying with requirements specified in EN 61000-6-2, EN 61000-6-3 and
NAMUR Recommendation NE 21
Weight Approx. 1 kg

EB 8355-2 EN 9
Technical data
Inductive limit switches
2 proximity switches Type SJ 2-SN
Control circuit Ratings according to downstream transistor relay
Hysteresis at rated travel £1 %
Solenoid valve
Input Binary direct current signal
Nominal signal 6 V DC 12 V DC 24 V DC
Signal 0 (no pick-up),
DC signal at –25 °C £1.2 V £2.4 V £4.7 V
Signal 1 (safe pick-up),
DC signal at 80 °C ³5.4 V ³9.6 V ³18 V
Maximum permissible signal 28 V 25 V 32 V
Coil resistance Riat 20 °C 2909 W5832 W11714 W
Air consumption in steady state In addition to that of the positioner: "Off" £60 ln/h · "On"£10 ln/h
Closing time with
Rated travel and
signal pressure
range
(KVS = 0.14)
Type 3277
Actuator 120 cm² 240 cm² 350/355 cm² 700 cm²
0.2 to 1 bar
£0.5 s
£1 s £1.5 s £4 s
0.4 to 2 bar £2 s £2.5 s £8 s
0.6 to 3 bar ££1 s £1.5 s £5 s
Position transmitter* – Intrinsically safe output current circuit
Output signal Two-wire circuit 4 to 20 mA, reversible operating direction
Power supply Min. terminal voltage 12 V DC, max.
45 V DC Only with intrinsically safe circuit
Performance Characteristic: output linear to input, deviation from characteristic £1 %
Hysteresis £0.6 %
Response £0.1 %
Influence of power supply £1 % when voltage changes occur within the specified limits
HF influence £0.1 %, f = 150 MHz, 1 W power output at a distance of 0.5 m
Load influence £0.1 %
Permissible ambient temperature –20 to 70 °C –20 to … Refer to certificate
Ambient temperature influence £0.4 % on lower measuring range value, ££0.2 % on measuring span
Ripple of output signal £0.3 %
* Data refer to standard spring (15 mm travel with Type 3277 Actuator) and gain of 100.

2 Attachment to control valve
The positioner is attached either directly to
SAMSON Type 3277 Actuator or to valves
with cast yokes or with rod-type yokes in ac-
cordance with IEC 60534-6 (NAMUR).
When combined with an intermediate piece,
the device can also be attached to rotary ac-
tuators as a rotary positioner. As the
positioner is also available as a basic unit
without accessory equipment, refer to the ta-
bles on the following pages for both the re-
quired mounting parts and their associated
order numbers.
Do not remove the protective cover on the
back of the positioner before actually start-
ing to attach the positioner.
Mounting position and operating direction
The operating direction of the positioner
also determines its mounting position on the
actuator as illustrated in Figs. 3, 4 and 6.
The turnboard (7, Fig. 2) at the positioner
must be mounted correspondingly. For an
increasing input signal (reference variable),
the signal pressure pst can either be increas-
ing (direct action >>) or decreasing (reverse
action <>). This also applies when the refer-
ence variable decreases: direct action >>
causes the signal pressure to decrease, re-
verse action <> causes the signal pressure to
increase.
On the turnboard (7), the operating direc-
tion is indicated by symbols (direct >>, re-
verse <>). Depending on the position of the
turnboard, the adjusted operating direction
and the associated symbol become visible.
If the required operating direction does not
correspond to the visible symbol, or if you
want to change the operating direction, re-
move the fastening screw at the turnboard,
turn the board by 180°, and refasten the
turnboard with the screw. Make sure the
three rubber gaskets inserted in the housing
remain in position.
Note: When any subsequent changes are
made, e.g. reversing the operating direction
of the positioner control loop or changing
the actuator from “Actuator stem extends” to
“Actuator stem retracts” or vice versa, the
positioner's mounting position must be
changed accordingly.
2.1 Direct attachment to Type
3277 Actuator
Required accessories are listed in Tables 1
to 4 on page 14.
The attachment of the positioner either on
the left or right side of the actuator (always
looking at the signal pressure connection or
switchover plate) is determined by the re-
quired operating direction of the positioner,
i.e. >> or <>.
10 EB 8355-2 EN
Attachment to control valve

Fig. 3 · Mounting position and connections of Type 3277 (top) and Type 3277-5 120 cm2(bottom) Actuators
EB 8355-2 EN 11
Attachment to control valve
Actuator stem extends
Actuator stem retracts
Internal signal pressure
connection
Connection block
Tip of gasket (16)
Op. direction >>
Attachment left Operating
direction <>
Attachment right
Signal pressure connection
over piping
With gasket (new) With switch plate (old)
Side view of connection block
Cover plate
Actuator stem extends
Actuator stem retracts
Marking
Gasket (16)
Switch plate (13)
Switchover plate Signal pressure input
for attachment right
Symbol
Marking
Signal pressure
input for attach-
ment left
Seal
with filter
Actuator stem extends
>> Operating direction <>
Attachment left Attachment right
Actuator stem retracts
<> Operating direction >>
Attachment left Attachment right
Operating
direction >>
Attachment right
Op. direction <>
Attachment left

1. Screw the clamp (1.2) to the actuator
stem. Make sure that the fastening screw
is located in the groove of the actuator
stem.
2. Screw the associated lever D1 or D2 (for
355/700 cm² actuator) to the pick-up le-
ver of the positioner.
3. Fasten the distance plate (15) with the
seal pointing towards the actuator yoke.
4. Attach the positioner such that the lever
D1 or D2 slides centrically over the pin
(1.1) of the clamp (1.2). Screw the
positioner to the distance plate (15).
5. Mount the cover (16).
6. Check whether the correct measuring
spring has been installed as listed in Ta-
ble 4.
Range spring 1 is installed as standard.
If necessary, replace it with range spring
2 included in the accessories and fix it at
the outer slot.
Actuators with 240, 350, 355 and 700 cm²
diaphragm area
7. Make sure that the tip of the gasket (16)
projecting from the side of the connec-
tion block (Fig. 3, middle) is positioned
to match the actuator symbol that corre-
sponds to the actuator's fail-safe action
"Actuator stem extends" or "Actuator
stem retracts."
If necessary, remove the three fixing
screws and the cover. Reposition the gas-
ket (16) turned by 180°.
The old connection block version re-
quires the switch plate (13) to be turned
such that the corresponding actuator
symbol points to the marking.
8. Place the connection block with its seals
on the positioner and the actuator yoke
and screw tight using the fastening
screw.
Actuators with "Actuator stem retracts"
require the ready-made signal pressure
line to be installed.
Actuators with 120 cm² diaphragm area
The signal pressure is transmitted to the dia-
phragm chamber over the switchover plate
(Figs. 3 and 4, bottom).
7. Remove the screw in the rear cover of the
positioner (Fig. 5) and seal the lateral
signal pressure output "output" with the
plug contained in the accessories kit.
8. Mount the positioner such that the bore
in the distance plate (15) mates with the
seal in the bore of the actuator yoke.
9. Align the switchover plate with the corre-
sponding symbol and fasten it to the ac-
tuator yoke.
Note: When a solenoid valve or a similar
device is attached to the 120 cm² actuator in
addition to the positioner, do not remove the
rear M3 screw plug. In this case, the signal
pressure must be transmitted from the signal
pressure output to the actuator over an addi-
tional connecting plate (Table 2). The
switchover plate is not used.
Filling the actuator with air
If the spring chamber of the actuator must
be filled with the positioner's exhaust air,
12 EB 8355-2 EN
Attachment to control valve

use piping (Table 3) to connect the spring
chamber (with version "Actuator stem ex-
tends") to the connection block. To do so, re-
move the plug from the connection block.
For version "Actuator stem retracts" and
Type 3277-5 Actuators with an effective di-
aphragm area of 120 cm², an internal bore
hole ensures that the spring chamber is filled
with air.
Note: When the valve is installed, the side
cover of the actuator must be mounted such
that the vent plug points downward.
EB 8355-2 EN 13
Attachment to control valve
1.2
D2
D1
15
Fig. 4 · Mounting the clamp
Vent plug must point
downward when valve is
installed
Switchover plate
Signal pressure bore
Clamp (1.2)
Distance plate (15)
Type 3277-5
120 cm²
Type 3277
240 cm²
350 cm²
355 cm²
700 cm²
Attachment left Attachment right
Looking onto the signal pressure connection
Vent plug
Cover

14 EB 8355-2 EN
Attachment to control valve
Table 1 Mounting kit
Required lever with associated clamp and distance plate Actuator size [cm²] Order no.
D1 with vent plug for output (38)
Connecting thread
G ¼
¼ NPT 120 1400-6790 1400-6791
D1 (33 mm long with 17-mm-high clamp) 240 and 350 1400-6370
D2 (44 mm long with 13-mm-high clamp) 355/700 1400-6371
Table 2 Order no.
Swichover plate for actuators 120 cm² Actuator 3277-5xxxxxx.00 (old) 1400-6819
Swichover plate new Actuator 3277-5xxxxxx.01 or higher (new) 1400-6822
Connecting plate for additional attachment of,
e.g. a solenoid valve Actuator 3277-5xxxxxx.00 (old), G 18
Actuator 3277-5xxxxxx.00 (old), 18NPT 1400-6820 1400-6821
Connecting plate new Actuator 3277-5xxxxxx.01 or higher (new) 1400-6823
Note! Only the new switchover and connecting plates can be used for new actuators (model index 01). Old and new
plates cannot be interchanged.
Connection block required for actuators with 240, 350, 355 and 700 cm2
diaphragm area (including seals and fastening screw)
G ¼ 1400-8819
¼ NPT 1400-8812
Table 3 Material Actuator size [cm²] Order no.
Piping required
including screw fitting
For actuator:
“Actuator stem retracts“
or
when the top diaphragm case is filled with ex-
haust air from the positioner
Steel 240 1400-6444
Stainless steel 240 1400-6445
Steel 350 1400-6446
Stainless steel 350 1400-6447
Steel 355/700 1400-6448
Stainless steel 355/700 1400-6449
Table 4 · Range spring required Travel [mm] Actuator size [cm²] Order no.
2 (4.5 coils) 7.5 120, 240 1400-6443
1 (9.5 coils, installed as standard) 10 to 15 120, 240 and 350 1400-6442
2 15 355/700 1400-6443
1 30 355/700 1400-6442
Accessories Order no.
Pressure gauge build-on block (only for 120 cm2)G ¼ 1400-7458
¼ NPT 1400-7459
Pressure gauge kit for supply pressure and signal pressure Stainl. steel/Brass 1400-6950
Stainl. steel/St. steel 1400-6951
Filter check valve, replaces the vent plug and increases the degree of protection to IP 65 1790-7408
Assortment of spare parts including seals and diaphragms 1400-9895

2.2 Attachment according to
IEC 60534-6
Required mounting parts are listed in Table
5. The rated travel of the valve determines
which lever and range spring (Table 6) are
required.
An adapter housing (Fig. 7) is required for
NAMUR attachment. The valve travel is
transmitted over the lever (18) and shaft
(25) to the bracket (28) of the adapter hous-
ing and then passed on to the pin (27a) lo-
cated on the positioner lever. Fix the spring
included in the accessories at the back of the
positioner housing as illustrated in Fig. 5 to
ensure that the pin (27a) is properly located
in the bracket (28).
The positioner can be attached either to the
left or the right of the control valve (Figs. 6
and 7). Turn the positioner at the adapter
housing by 180° to set or change the oper-
ating direction of the positioner/control
valve unit.
EB 8355-2 EN 15
Attachment to control valve
Fig. 5 · Installing the spring on the back of the
housing
Spring Plug screw
Attachment left Attachment right
Mounting position on the plate looking onto the travel pick-up (20), actuator facing upward (see also Fig. 7)
Actuator with fail-safe action “Actuator stem extends” (FA)
Direct op. direction >> Reverse op. direction <> Direct op. direction >> Reverse op. direction <>
Actuator with fail-safe action “Actuator stem retracts” (FE)
Direct op. direction >> Reverse op. direction <> Direct op. direction >> Reverse op. direction <>
Fig. 6 · Attachment to the left or right of the valve when NAMUR attachment is used
20
Electrical connection Electrical connectionPneumatic connections
20
Pneumatic connection Pneumatic connectionElectrical connections

2.2.1Mounting sequence
Choose the required mounting parts and
range spring from Table 4 or 5 and install
them as illustrated in Fig. 7.
Control valve with cast yoke
1. Screw the plate (20) to the stem connec-
tor connecting the actuator and plug
stems using countersunk screws. For
2100 and 2800 cm²actuators, use an
additional mounting bracket (32).
2. Remove the rubber plug from inside the
adapter housing. Fasten the housing to
the left or right side of the NAMUR rib
(as shown in Fig. 6) using a hexagon
screw.
Control valve with rod-type yoke
1. Screw the plate (20) to the follower
clamp of the plug stem.
2. Screw the studs (29) into the adapter
housing.
3. Place the housing with the mounting
plate (30) on either the right or left side
(Fig. 6) of the plug stem and fasten it
with the nuts (31). Make sure that the le-
ver (18) to be mounted subsequently is in
horizontal position when the valve is at
mid-travel.
4. Screw the pin (19) into the center row of
holes in the plate (20) and lock it in a
position approximately above the correct
lever marking (1 to 2) as in Table 6.
5. Clamp the clip (21) onto the lever (18). If
the actuator is attached with its air con-
nection pointing to the front (Fig. 6), the
clip must be clamped onto the lever (18)
with the open side pointing downward.
6. Plug the lever (18) together with the
clamping plate (22) on the shaft (25).
The clip must clasp the pin (19).
2.2.2Presetting the travel
1. Move the valve to 50 % travel.
2. Adjust the shaft (25) in the adapter hous-
ing such that the black pointer (24)
matches the cast mark on the adapter
housing.
3. Fasten the clamp (22) tightly in this posi-
tion using the screw (23).
4. Screw in the pin (27a) at the positioner
lever on the side of the insert nut and se-
cure it with a hex nut (27b) on the oppo-
site side. Observe the mounting position
Aor Baccording to Table 6 and Fig. 7.
5. Place the positioner on the adapter hous-
ing, observing the operating direction.
Make sure that the pin (27a) rests
against the bracket (28) and screw it
tight.
Caution! The pin must not slip out of the
bracket once it has been installed.
6. Check whether the correct range spring
has been installed as listed in Tables
5/6.
Range spring 1 is installed as standard.
If necessary, replace it with range spring
2 included in the accessories and fix it at
the outer slot.
7. Adjust the positioner as described in sec-
tion 4.1.
16 EB 8355-2 EN
Attachment to control valve

EB 8355-2 EN 17
Attachment to control valve
Mounting position
2
1,5
1
24 25 22
32
31
20 19
19 21 2023 18
29
30
2826
AB
27b
27a
Fig. 7 · Attachment according to IEC 60534-6 (NAMUR)
Attachment to
NAMUR rib
Attachment to
rod-type yoke
18 Lever N1, N2
19 Pin
20 Plate
21 Clip
22 Clamping plate
23 Screw
24 Pointer
25 Shaft
26 Lever of the positioner
27a Pin
27b Lock nut
28 Bracket
29 Studs
30 Plate
31 Nuts
32 Mounting bracket

18 EB 8355-2 EN
Attachment to control valve
Table 5 Control valve Travel [mm] With lever Order no.
NAMUR mounting kit,
Refer to Fig. 7
concerning parts
Valve with cast yoke 7.5 to 60 N1 (125 mm) 1400-6787
22.5 to 120 N2 (212 mm) 1400-6789
Valve with
rod-type yoke,
rod diameter
[mm]
20 to 25 N1 1400-6436
20 to 25 N2 1400-6437
25 to 30 N1 1400-6438
25 to 30 N2 1400-6439
30 to 35 N1 1400-6440
30 to 35 N2 1400-6441
Attachment to Fisher and Masoneilan linear actuators
(one each of both mounting kits is required per actuator)
1400-6771
and
1400-6787
Additional range spring acc. to Table 6 Range spring 1 (9.5 coils, installed as standard)
Range spring 2 (4.5 coils) 1400-6442 1400-6443
Accessories Order no.
Pressure gauge build-on block G ¼ 1400-7458
¼ NPT 1400-7459
Pressure gauge kit Stainless steel/Brass 1400-6950
Stainless steel/Stainless steel 1400-6951
Filter check valve, replaces the vent plug and increases the degree of protection to IP 65 1790-7408
Assortment of spare parts including seals and diaphragms 1400-9895
Table 6
Travel [mm]* 7.5 15 15 30 30 60 30 60 60 120
Pin on marking* 1212121212
Distance pin/fulcrum of the lever 42 to 84 mm 84 to 168 mm
With lever N1 (125 mm long) N2 (212 mm long)
Pin (27a) on position A A B A B
Range spring required (see Table 5) 21111
* Intermediate values must be interpolated

2.3 Attachment to rotary actuators
The positioner can also be attached to rotary
actuators according to VDI/VDE 3845 when the mounting kits and accessories listed in Table 7 are used.
EB 8355-2 EN 19
Attachment to control valve
Table 7 · Complete mounting parts, including range spring 2, but excluding the cam disk Order no.
Attachment acc. to VDI/VDE 3845, level 1 1400-8815
SAMSON Type 3278 Actuator 160 cm² 1400-7103
VETEC Type S 320 cm² 1400-7104
VETEC Type R R 100 to R 250 1400-7117
Attachment to Masoneilan actuators
Camflex I, DN 25 to 100 1400-7118
Camflex I, DN 125 to 250 1400-7119
Camflex II 1400-7120
Range spring required Order no.
Standard operation of reference variable, range spring 2 (4.5 coils) 1400-6443
Split-range operation, range spring 1 (9.5 coils, installed as standard) 1400-6442
Cam disk with accessories Order no.
~, linear basic characteristic 3)
~, equal percentage basic characteristic 3)
~, linear1)
~, equal percentage2)
~, linear1)
~, equal percentage2)
~, linear1)
~, equal percentage2)
(0050-0072), opening angle 0 to 90°
(0050-0073), opening angle 0 to 90°
(0050-0080), op. angle 0 to 70°, for control butterfly valves
(0050-0081), op. angle 0 to 70°, for control butterfly valves
(0050-0074, VETEC), opening angle 0 to 75°
(0050-0075, VETEC), opening angle 0 to 75°
(0059-0007, Camflex) set to between 0 and 55°
(0059-0008, Camflex) set to between 0 and 55°
1400-6664
1400-6665
1400-6774
1400-6775
1400-6666
1400-6667
1400-6637
1400-6638
1) Linearizes the flow characteristic 2) Creates an equal percentage flow characteristic 3) Based on opening angle
Accessories Order no.
Pressure gauge build-on block G ¼ 1400-7458
¼ NPT 1400-7459
Pressure gauge kit St. steel/Brass 1400-6950
St. steel/St. steel 1400-6951
Filter check valve, replaces the vent plug and increases the degree of protection to IP 65 1790-7408
Assortment of spare parts including seals and diaphragms 1400-9895

The rotary motion of these actuators is con-
verted into a linear motion required by the
pneumatic control unit of the positioner us-
ing the cam disk of the actuator shaft and a
cam follower roll on the positioner lever.
Note: Use Table 7 to check whether the
proper range spring (1 or 2) has been in-
stalled. Range spring 1is installed as stan-
dard. If necessary, replace it with range
spring 2included in the accessories and at-
tach it at the outer slot.
Double-acting springless rotary actuators re-
quire the use of a reversing amplifier on the
connection side of the positioner housing
(see section 2.3.4).
When using a reversing amplifier, the pres-
sure regulator (9, Fig. 2) must be turned
clockwise as far as it will go (also see sec-
tion 3.1.2).
When attaching the positioner to the
SAMSON Type 3278 Rotary Actuator (Fig.
8, left), the actuator's inside and the unused
reverse side of the diaphragm are filled with
the positioner's exhaust air. Additional pip-
ing is not required. When attaching the
positioner to actuators from other manufac-
turers (Fig. 8, right), the reverse side of the
diaphragm can be filled with air over a pipe
connection installed between the actuator
and the intermediate piece.
2.3.1Mounting the cam follower
lever
1. Place the lever with the cam follower roll
(35) on the side of the feedback lever
(37) opposite the insert nuts. Fasten with
the supplied screws (38) and washers.
Note: To ensure a close physical contact be-
tween the cam follower roll and the cam
disk, fix the spring contained in the accesso-
ries kit (order no. 1400-6660) at the rear of
the positioner housing (see Fig. 5).
2.3.2Mounting the intermediate
piece
SAMSON Type 3278 Actuator
1. Screw the adapter (36) to the free end of
the actuator shaft.
2. Attach the intermediate piece (34) to the
actuator housing using two screws. Align
the intermediate piece to ensure that the
air connections of the positioner point to-
wards the diaphragm housing.
3. Align the cam disk (40) and scale (39)
as described in section 2.3.3 and fasten
with screws.
Actuators according to VDI/VDE 3845
(fixing level 1)
1. Place the complete intermediate piece
(34, 44, 45, and 42) onto the mounting
bracket that came with the actuator and
fasten with screws.
2. Align the cam disk (40) and scale (39)
as described in section 2.3.3 and fasten
with screws.
20 EB 8355-2 EN
Attachment to control valve