Samson 3780 series Service manual

HART Positioner
Type 3780
Mounting and
operating instructions
EB 8380-1 EN
Firmware R 2.22/K 2.23
Edition February 2003
Fig. 1 ⋅Type 3780

Contents Page
1. Design and principle of operation . . . . . . . . . . . . . . . . . . . . . . 10
1.1 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.2 Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2. Attachment to the control valve . . . . . . . . . . . . . . . . . . . . . . . 13
2.1 Direct attachment to Type 3277 Actuator . . . . . . . . . . . . . . . . . . . 14
2.2 Attachment according to IEC 60534-6 (NAMUR) . . . . . . . . . . . . . . . 18
2.2.1 Mounting sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.2.2 Presetting the valve travel . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.3 Attachment to rotary valves . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.3.1 Mounting the cam follower roll lever . . . . . . . . . . . . . . . . . . . . . 22
2.3.2 Mounting the intermediate piece . . . . . . . . . . . . . . . . . . . . . . . 22
2.3.3 Aligning and mounting the cam disk . . . . . . . . . . . . . . . . . . . . . 24
2.3.4 Reversing amplifiers for double-acting actuators . . . . . . . . . . . . . . . . 26
2.4 Fail-safe action of the actuator . . . . . . . . . . . . . . . . . . . . . . . . 26
3. Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.1 Pneumatic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.1.1 Pressure gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.1.2 Supply air pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.2 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.2.1 Switching amplifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.2.2 Establishing communication . . . . . . . . . . . . . . . . . . . . . . . . . 32
4. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.1 Write protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.2 Activate/deactivate forced venting function . . . . . . . . . . . . . . . . . . 34
4.3 Default setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.3.1 Adjusting mechanical zero point . . . . . . . . . . . . . . . . . . . . . . . 35
4.3.2 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.4 Adjusting inductive limit switches . . . . . . . . . . . . . . . . . . . . . . . 37
5. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6. Servicing explosion-proof versions . . . . . . . . . . . . . . . . . . . . . . 38
7. Summary of parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8. List of parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9. Error messages and diagnostics . . . . . . . . . . . . . . . . . . . . . . . 53
9.1 Information/alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Contents
2EB 8380-1 EN

9.2 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
9.3 Error messages during initialization without abortion . . . . . . . . . . . . 59
9.4 Error messages during initialization with abortion . . . . . . . . . . . . . . 60
Dimensional diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Type examination certificates . . . . . . . . . . . . . . . . . . . . . . . 63
Safety instructions
WARNING
Assembly, commissioning and operation of the device may only be
performed by trained and experienced personnel familiar with this
product.
According to these mounting and operating instructions, trained
personnel is referred to persons 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 standards.
Explosion-proof versions of this device may only be operated by
personnel who have undergone special training or instructions or
who are authorized to work on explosion-proof devices in hazard-
ous areas. See chapter 6 for more details.
Any hazards which could be caused by the process medium, the
signal pressure and moving parts of the control valve are to be
prevented by means of appropriate measures.
If inadmissible motions or forces are produced in the actuator as a
result of the level of the supply air pressure, this must be restricted
by means of a suitable pressure reducing station.
Proper shipping and appropriate storage are assumed
Note: Devices with the CE mark meet the requirements specified in
the Directive 94/9/EC and the Directive 89/336/EEC.
The Declaration of Conformity can be viewed and downloaded on
the Internet at http://www.samson.de.
EB 8380-1 EN 3

Modifications of positioner firmware
Modifications of positioner firmware in comparison to previous version
Former New
For more details on the listed parameters, please also refer to the
list of parameters in chapter 8.
Positioner R 1.41 R 2.01
Parameters:
Operating direction Direction of action
The reference variable (w) is not assigned to the output signal
pressure (y) anymore, but to the travel/angle of rotation (x).
>> increasing/increasing, valve opens with increasing reference
variable.
<> increasing/decreasing, valve closes with increasing reference
variable.
Minimum transit time
filling/venting Minimum transit time open/closed
The measured time is not referenced to filling/venting the
actuator, but to the opening and closing the valve.
Required transit time
filling/venting Required transit time open/closed
The actuating time is not referenced to filling/venting the actuator,
but to the opening and closing the valve.
Cycle time factor
K_IS Omitted
Initialization For version R2.02 and upwards, an alarm message is generated
for deviations larger than 10% when the type of initialization is
maximum range. It is for the user to decide if he wants to tolerate
the deviation.
Tolerated overshoot If overshoot and dead band are exceeded by the negative
deviation value, the pulse is adapted.
Text field Free space for storing information text in the field device.
4EB 8380-1 EN

Modifications of positioner firmware
Former New
Positioner 2.02 R 2.11
Parameters:
Minimum pulse
filling/venting
The minimum pulses for filling and venting are determined for
the travel ranges 0 to 20 %, 20 to 80 % and 80 to 100 %. The
minimum pulses are no longer determined during initialization.
Proportional-action
coefficient
KP_Y1 and KP_Y2
These factors are adapted to the actuator type selected and to
the transit times measured.
Gain factor
KD
Initialization "Air leakage of pneumatic system" is displayed as alarm
message, but does not cause abortion of initialization anymore.
Upon initialization in the "nominal range", the positioner
assumes only 100 % travel (no overtravel).
"Wrong selection of rated travel/angle of rotation or
transmission" is displayed as alarm message, but does not cause
abortion of initialization anymore.
Positioner 2.11 R 2.21
Type of actuator Change over type of actuator from "linear actuator" to "rotary
actuator"
Initialization type .................Based on maximum range
Transmission code................S90
Nominal angle.....................90°
End position when w <..........1 %
End position when w >..........99 %
Rotational angle range start ..0°
Rotational angle range end ...90°
Change over type of actuator from "rotary actuator" to "linear
actuator"
Attachment .........................Integral...............................Acc. to NAMUR
Initialization type .................Based on nominal range .......Based on nominal range
Mounting position ................Arrow towards actuator........Arrow away from actuator
Transmission code................D1......................................–
Pin position..........................– ........................................A
Rated travel .........................15 mm ................................15 mm
End position when w <..........1 % .....................................1 %
End position when w >..........125 %.................................125 %
Travel range start..................0 mm ..................................0 mm
Travel range end ..................15 mm ................................15 mm
Length of lever......................– ........................................42 mm
EB 8380-1 EN 5

Modifications of positioner firmware
End position when w
</> Changing the type of initialization from "maximum range" to "nominal range" causes:
End position at < 1 % End position at > 125 %
Changing the type of initialization from "nominal range" to
"maximum range" causes:
End position at < 1 % End position at > 99 %
Extended
valve diagnostics Supports TROVIS-EXPERT from version 1.0 and upwards
Required transit time
open/closed The adjustment range for the required transit times has been limited to 75 s. Safe functioning can only be guaranteed up to
this limit value.
Initialization During initialization, the minimum control pulses for the range
20 % to 80 % of the range of the manipulated variable are
determined and saved in the EEPROM.
Proportional-action
coefficient
KP_Y1 and KP_Y2
These factors are adapted to the type of actuator chosen and the
transit times measured.
Positioner 2.21 R 2.22
Correction in "manual" operating mode and direction of action
Correction in zero calibration started via communication
Communication K 1.00 K 2.01
Characteristic type Free space for entering information on the description of the
user-defined characteristic saved in the device. Can be stored in
the field device.
For version K 2.02 upwards, when selecting [equal percentage]
or [equal percentage reverse], the description text in parameter
characteristic type of the device is automatically set to the
selection made.
Communication K 2.02 K 2.11
Supports all functions of R 2.11
Type of initialization For K 2.11 and upwards, the default value is "maximum range"
End position when w > For K 2.11 and upwards, the default value is 99 %
6EB 8380-1 EN

Positioner versions
Former New
Communication
K 2.13 K 2.21
Supports all functions of R 2.21 as well as TROVIS-EXPERT from
version 1.0 and upwards
Communication
K 2.21 K 2.22
Supports all functions of R 2.21 as well as TROVIS-VIEW from
version 2.0 and upwards
New for model index 3780-x...x. 01 and upwards: Write protection switch
If this option is activated using the switch, the positioner settings cannot be written over by
HART communication. See chapter 4.1 for more details on the write protection switch.
Model index 3780-x...x. 03 and upwards are suitable for the extended valve diagnosis
using the TROVIS-EXPERT software.
Positioner versions
Model 3780 - XXXXX
Explosion
protection Without Ex II 2 G EEx iA IIC T6 as per ATEX
CSA/FM
Ex II 3 G EEx nA II T6 as per ATEX
0
1
3
8
Additional
accessories Limit switches Without 2 inductive
2 software
0
2
3
Forced venting Without
With 0
1
Position transmitter Without
4...20 mA 0
1
Pneumatic
connections NPT 1/4-18 ISO 228/1-G 1/4 1
2
EB 8380-1 EN 7

Positioner
Rated travel, adjustable Direct attachm. 5 to 30mm
Attachment acc. to IEC 60534-6 (NAMUR), 5 to 255 mm or 30 to 120° C
Reference variable Two-wire connection, signal range 4 to 20 mA, span 4 to 16 mA
Min. current = 3.6 mA, load ≤10.8 V (corresponding to 540 Ωat 20 mA),
static destruction limit 500 mA
Supply Supply air from 1.4 to 6 bar (20 to 90 psi)
Signal pressure (output) 0 bar to pressure of supply air
Characteristic, adjustable Linear, equal percentage, reverse equalpercentage, user-programmable
Deviation from characteristic ≤1 %
Dead band Adjustable from 0.1 to 10 %, default 0.5 %
Resolution ≤0.05 %
Transit time to travel Up to 75 s, separately adjustable for exhaust and supply air
Moving direction Reversible, adjustment via software
Air consumption Independent of supply air <90ln/h
Air delivery Actuator filled: for ∆p = 6 bar 9.3 mn3/h, for ∆p = 1.4 bar 3.5 mn3/h
Actuator vented: for ∆p = 6 bar 15.5 mn3/h, for ∆p = 1.4 bar 5.8 mn3/h
Perm. ambient temperature −20 to 80 °C, with metal cable gland −40 to 80 °C
Devices with position transmitter only −20 to 80 °C
For explosion-proof devices, see type examination certificate in appendix
Effects Temperature: ≤0.15 %/10 K, supply: none, vibrations: none up to 250 Hz and 4 g
Explosion protection EEx ia IIC T6, see type examination certificate
Degree of protection IP 65 by using the filter check valve included
Electromagnetic
compatibility
Requirements acc. to EN 50081/50082 as well as NAMUR Recommendation 21 have
been met
Electrical connections 1 cable gland M20x1.5, black plastic;
other threaded hole M20x1.5 available
Fault message output For connection to switching amplifier acc. to EN 60947-4-6, static destruction limit 16 V
Forced venting
(model index .03 and
upwards)
Activated/deactivated by a switch inside case
Input: 6...24 V DC, Riapprox. 6 kΩ, at 24 V DC (depending on voltage),switching point
for "1" signal at ≥ 3 V, signal "0" only at 0 V, KVvalue 0.17; static destruction limit 45 V
Technical data
8EB 8380-1 EN

Communication
Hardware requirements SAMSON’s TROVIS-VIEW Operator Interface (see Data Sheet T 6661 EN) or handheld
communicator, e.g. Type 275 by Rosemount
Integration of other operator interfaces, e.g. DTM, are available
Data transmission HART Field Communication Protocol
Impedance in HART frequency range: receive: 350 to 450 Ω; send: approx. 115Ω
Accessory equipment
Inductive limit switches Two Type SJ 2 SN Prox. Switches for connection to switching amplifier acc. to EN 60947-5-6
Software limit switches Two configurable limit values for connection to switching amplifieracc. to EN 60947-5-6
Switching hysteresis 1%, static destruction limit 16 V
Analog position
transmitter Two-wire transmitter, output 4 to 20 mA Supply: terminal voltage 12 to 35 V DC, static destruction limit 40 V
Direction of action reversible, characteristic linear, operating range: –10 % to + 114 %
D.C. current signal ripple content: 0.6 % at 28 Hz/IEC 381 T1
Resolution ≤0.05 %
HF influence<2 % with f= 50 to 80 Mhz
Influence aux. supply: none; temperature influence: same as positioner
Materials (WN numbers according to DIN)
Case Die-cast aluminum, chromed and plastic-coated
External parts: stainless steel WN 1.4571 and WN 1.4301
Weight Approx. 1.3 kg
Versions
EB 8380-1 EN 9

1. Design and principle of operation
The positioner essentially consists of an in-
ductive, non-contact displacement sensor
system and an electrically controlled valve
block comprising the 2/2-way on-off valves
and an electronic unit. This unit contains
two microcontrollers for processing the con-
trol algorithm and managing the communi-
cation.
Whenever a deviation between the actual
valve travel (actual value) and the reference
variable (set point) occurs, the microcontrol-
ler produces binary pulse-pause modulated
signals to control the two 2/2-way on-off
valves, each of which is assigned an am-
plifier. One of these valves controls the
exhaust air, and the other one controls the
supply air.
The supply air valve (3) switches the supply
air (7, supply air pressure 1.4 to 6 bar) to
the actuator (filling). The exhaust air valve
(4) controls the air exhausted from the actua-
tor to the atmosphere (venting). These on-off
valves can either have the switching states -
permanently open, permanently closed - or
generate single pulses of changing widths.
With the two valves being controlled, the
plug stem moves to a position correspond-
ing to the reference variable. If there is no
system deviation, both the supply air and
the exhaust air valve are closed.
As a standard feature, the positioner is
equipped with a fault message output (bi-
nary output according to EN 60947-5-6)
used to signalize a fault to the control room.
Activating the write protection switch lo-
cated in the hinged cover prevents the posi-
tioner settings from being overwritten by the
HART protocol.
Forced venting function
The positioner is controlled via a 6 to
24 V signal, causing the signal pressure
to be applied to the actuator. If this volt-
age signal decreases, the signal pressure is
shut off and the actuator is vented. The
springs contained in the actuator move the
valve to its fail-safe position.
The forced venting function is installed in all
positioners from model index .03and up-
wards. The function can be activated or
deactivated by a switch. See chapter 4.2
(page 34) for more details.
1.1 Options
As a supplement to the standard positioner
version, there are several additional options
to extend the positioner functions.
Limit switches
To signalize the valves’ end positions in fail-
safe circuits, either two software limit swit-
ches or two proximity switches can be used.
Position transmitter
The position transmitter is an intrinsically
safe 2-wire transmitter controlled by the
microcontroller of the positioner. It serves to
assign the valve position with the 4 to 20
mA output signal. The position transmitter
signalizes both end positions, "valve closed"
or "valve fully open", as well as all inter-
mediate positions. Since the valve positions
are signalized to the positioner inde-
pendently of the input signal (minimum
current must be observed), the position
transmitter is a suitable option for checking
the current valve position.
10 EB 8380-1 EN
Design and principle of operation

1.2 Communication
For communication, the positioner is
equipped with an interface for the HART
protocol (Highway Addressable Remote
Transducer). Data transmission is accom-
plished by superimposing an FSK signal
(FSK = Frequency Shift Keying) over the
existing 4 to 20 mA signal lines for the refer-
ence variable.
You can configure and operate the posi-
tioner either via HART-compatible, hand-
held communicator or via PC, using an FSK
modem and an RS 232 interface.
After mechanically resetting the positioner
to zero, it can be automatically started up
via initialization procedure. During this in-
itialization procedure, zero is automatically
adjusted, and the preset span is checked.
Fig. 2 ⋅Functional diagram
11 10
1
12
ep
3
4
2
51
G
µC
FSK
ep
G
µC
6
7
8
1 Inductive displacement sensor
2 Microcontroller
3 2/2 way valve for supply air
4 2/2 way valve for exhaust air
5 Microcontroller
6 Pressure regulator
7 Supply air 1.4 to 6 bar
8 Reference variable 4 to 20 mA
with superimposed FSK signal
10 Actuator stem
11 Lever
12 Clamp
EB 8380-1 EN 11
Design and principle of operation

The positioner is supplied with a standard
configuration applying to a valve with
15 mm rated travel, which is designed for
integrated positioner attachment.
An individual configuration needed to
adapt the positioner to deviating actuators
can only be carried out by means of a com-
municator or a PC with a connected FSK
modem, using the HART protocol.
You can enter the following parameters:
control characteristic, direction of action,
limitation of travel, travel range, transit time
to travel and fault messages.
Operating software
TROVIS-VIEW
for devices with firmware K 2.11 or
higher, Data Sheet T 6661 EN
IBIS
(DOS-based, no longer runs on
Windows 2000/ME/XP/NT),
see EB 8380-2 EN for more details
DMT 1.2 and PACTware
Integration
e.g. Fisher AMS, Siemens PDM, etc.
Handheld communicator
DD-based handheld communicators,
e.g. Fisher-Rosemount HART Communicator.
12 EB 8380-1 EN
Design and principle of operation

2. Attachment to the control valve
The positioner can be attached either di-
rectly to a SAMSON Type 3277 Actuator,
or according to Namur (IEC 60534-6), to
control valves with cast yokes or rod-type
yokes.
In combination with an intermediate piece,
the device can also be attached as rotary
positioner to rotary actuators.
For quick-acting control valves with a small
travel volume (transit time travel <0.6 s) it
might be necessary to replace the filter in-
stalled in the output pressure bore (Output
36) with a screw-in throttle (see list of acces-
sories on page 17) to obtain good control
properties.
Since the standard positioner unit is de-
livered without accessories, the required
mounting parts and their order numbers
have to be derived from the tables.
CAUTION
The positioner does not have a venting
plug. Instead the air is exhausted via vent-
ing plugs on the mounting parts (see also
Fig. 3, 5 and 7).
A filter check valve for the exhaust air is sup-
plied with every positioner (located under-
neath a transparent cover at the back of the
positioner). Use this filter check valve in
place of the standard venting plug included
in the accessories. The IP 65 degree of pro-
tection to prevent dirt and moisture entering
the device is only achieved when this filter
check valve is used.
EB 8380-1 EN 13
Attachment to the control valve

2.1 Direct attachment to Type 3277
Actuator
For the selection of the required mounting
parts, refer to Tables 1, 2 and 3 (page 17).
When looking at the signal pressure connec-
tion or the switchover plate (Fig. 3) from the
top, the positioner must be attached to the
left side of the actuator. The arrow on the
black case cover (Fig. 12) should then point
towards the diaphragm chamber.
Exception: Control valves in which the plug
closes the seat area when the actuator stem
retracts. In this case, the positioner has to
be attached to the right side of the yoke, i.e.
with the arrow pointing away from the dia-
phragm chamber).
1. First screw the clamp (1.2) to the actua-
tor stem. Make sure the fastening screw
is located in the groove of the actuator
stem.
2. Screw the associated lever D1 or D2 to
the transmission lever of the positioner.
3. Fasten distance plate (15) with seal to-
wards the actuator yoke.
4. Place positioner on the plate (15) so
that the lever D1 or D2 will slide centri-
cally over the pin of the clamp (1.2).
Then screw on to distance plate (15).
5. Attach cover (16).
Actuator with 240 to 700 cm2
6. The rear switch plate at the connection
block (Fig. 3) is to be aligned with the
proper arrow symbol on the block. This
means, the adjusted symbol for "actua-
tor stem extends" or "actuator stem re-
tracts" has to correspond to the respec-
tive actuator version used. If not,
remove the two fastening screws and
the switch plate, turn the switch plate by
180° and reinstall it.
7. Place connection block with the associ-
ated sealing rings against the positioner
and the actuator yoke and screw it
tight, using the fastening screw.
For actuators with fail-safe action "actu-
ator stem retracts", additionally install
the ready-made signal pressure pipe
between the connection block and the
actuator.
Actuator with 120 cm2
With Type 3277-5 Actuator with 120 cm2
the signal pressure is transmitted via the
switchover plate to the diaphragm chamber.
NOTE
For a rated travel of 7.5 mm, a brass
throttle (see list of accessories on page 17)
has to be pressed into the seal located in
the signal pressure input on the actuator
yoke.
With 15 mm rated travel, this is only re-
quired when the supply air pressure is
higher than 4 bar.
Additionally, the filter in the signal pressure
output (Output 36) must be removed and re-
placed with a screw-in throttle (see acces-
sories table) in fast control valves (transit
time <0.6 s) to achieve better control char-
acteristics.
6. Remove the vent plug on the back of the
positioner and close the side-located
signal pressure output (36) with the
plug from the accessory kit.
14 EB 8380-1 EN
Attachment to the control valve

Actuator stem
retracts
Venting
"Actuator stem
retracts" symbol
SUPPLY
1.2
D2
D1
15
16
15
1.2
16
Actuator stem retracts
Internal signal
pressure connection Signal pressure
connection via piping
1.2 Clamp
D 1 Lever
D2 Lever
15 Distance plate
16 Cover
Signal
pressure
hole
Side view of connection
block with switch plate
Connection block
Mark
Mark
"Actuator stem
extends" symbol
Switchover
plate
Switchover plate Signal pressure input
Signal pressure
input, if necessary
with brass throttle
Actuator stem extends
Actuator stem
extends
Fig. 3 ⋅Attachment and signal pressure connection for Type 3277 (top) and Type 3277-5 with 120 cm2 (below)
EB 8380-1 EN 15
Attachment to the control valve

7. Mount the positioner so that the hole in
the distance plate (15) matches the seal
located in the hole of the actuator yoke.
8. Align the switchover plate with the
corresponding symbol for left attach-
ment according to the marking and
screw tight onto the actuator yoke.
NOTE
If, with the 120 cm2 actuator in addition to
the positioner, a solenoid valve or a similar
device is attached to the actuator, do not
remove the rear M3 screw. In this case, the
signal pressure has to be fed from the sig-
nal pressure output to the actuator via the
required connecting plate (see Table 2). The
switchover plate is not used.
Filling the spring chamber with air
If the spring chamber of the Type 3277 Ac-
tuator must be filled with the air exhausted
from the positioner, the spring chamber (ver-
sion "Actuator stem extends") can be con-
nected to the connection block by means of
a tube (see Table 3). To proceed, remove
the venting plug in the connection block.
In Type 3277-5 when "Actuator stem re-
tracts" the exhausted air from the positioner
is constantly applied to the spring chamber
through an internal hole.
16 EB 8380-1 EN
Attachment to the control valve

Table 1
Required leverwith associated clamp and distance plate
Actuator size
cm2Mounting kit
Order no.
D1 (33 mm in length with clamp 17 mm in height) 120 (G1/4)
120 (NPT 1/4)
1400-6790
1400-6791
D1 (33 mm in length with clamp 17 mm in height) 240 and 350 1400-6370
D2 (44 mm in length with clamp 13 mm in height) 700 1400-6371
Table 2 Order no.
Switchover plate for actuator 120 cm2Actuator 3277-5xxxxxx. 00 (old) 1400-6819
Switchover plate new Actuators with Index. 01 or higher (new) 1400-6822
Connecting plate for additional attachment
e.g. of a solenoid valve
3277-5xxxxxxxx. 00
(old)
G 1/8
NPT 1/8
1400-6820
1400-6821
Connecting plate new Actuators with Index. 01 or higher (new) 1400-6823
NOTE: New switchover plates and connecting plates can only be used with the new actuators (Index 01).
Old and new plates are not interchangeable.
Connection block required for actuator sizes 240, 350 and 700 cm2
(including seals and fastening screw)
G thread 1400-6955
NPT thread 1400-6956
Table 3 Actuator size cm2Material Order no.
Required tubes incl. fittings
for actuator:
"actuator stem retracts"
or
for filling the upper diaphragm chamber
240 Steel 1400-6444
240 Stainless steel 1400-6445
350 Steel 1400-6446
350 Stainless steel 1400-6447
700 Steel 1400-6448
700 Stainless steel 1400-6449
Accessories
Pressure gauge mounting kit for supply air and signal pressure St.S/Brass: 1400-6957 St.S/St.S:1400-6958
Signal pressure throttles (screw-in type and brass throttle) 1400-6964
Filter check valve, replaces venting plug and increases the degree of protection to IP 65
(one included with the delivered positioner)
1790-7408
EB 8380-1 EN 17
Attachment to the control valve

2.2 Attachment according to
IEC 60534-6 (NAMUR)
For the selection of the required mounting
parts, refer to Tables 4 and 5 (page 21).
The positioner is attached using an adapter
housing as shown in Fig. 4. The valve travel
is transmitted via the lever (18) and the
shaft (25) to the bracket (28) of the adapter
housing and then to the pin (27a) located at
the positioner lever.
To attach the positioner, the mounting parts
listed in Table 4 are required. Which lever
is to be used depends on the rated valve
travel.
Once the positioner is attached, however,
the arrow on the black case cover has to
point downwards away from the dia-
phragm actuator. (Exception: Control
valves in which the plug closes the seat area
when the actuator stem retracts. In this case,
the arrow has to point towards the dia-
phragm actuator).
2.2.1 Mounting sequence
NOTE
Before you mount the parts, load the actua-
tor with air pressure so that the valve is set
to 50 % of its travel. This will ensure the
exact alignment of the lever (18) and the
bracket (28).
Control valve with cast yoke
1. Use countersunk screws to screw the
plate (20) to the coupling which con-
nects the plug and actuator stem. With
2,100 and 2,800 cm2actuators, use
additional mounting bracket (32).
2. Remove rubber plug from the adapter
housing and fasten the housing to the
NAMUR rib, using the hexagon head
screw.
Control valve with rod-type yoke
1. Screw plate (20) to the follower clamp
of the plug stem.
2. Screw studs (29) into the adapter hous-
ing.
3. Place the housing with the plate (30) on
either the right or left side of the valve
rod and screw the housing tight by
using nuts (31). While doing so, make
sure that lever (18) to be mounted sub-
sequently is horizontal (when the valve
is at midtravel).
4. Screw the pin in a hole in the center
row of holes in the plate (20) and lock it
such that it will be located above the
correct lever marking (1 to 2) for the as-
signed travel, see Table 5. Intermediate
values must be calculated. Beforehand,
move the clamp (21) to surround the
pin.
5. Measure the distance between the cen-
ter of the shaft (25) and the center of
the pin (19). You will be prompted for
this value subsequently during the con-
figuration of the positioner.
18 EB 8380-1 EN
Attachment to the control valve

2
1,5
1
2826
AB
24 25 22
32
31
20 19
19 21 2023 18
27b
27a
29
30
Mounting position
Fig. 4 ⋅Attachment according to IEC 60534-6 (NAMUR)
18 Lever N1, N2
19 Pin
20 Plate
21 Clamp
22 Clamping plate
23 Screw
24 Pointer
25 Shaft
26 Lever of positioner
27a Coupling pin
27b Lock nut
28 Bracket
29 Studs
30 Plate
31 Nuts
32 Mounting bracket
Attachment to
NAMUR rib
Attachment to rod-type yoke
EB 8380-1 EN 19
Attachment to the control valve

2.2.2 Presetting the valve travel
1. Adjust the shaft (25) in the adapter
housing so that the black pointer (24) is
aligned with the casted marking on the
adapter housing.
2. Screw tight clamping plate (22) in this
position, using a screw (23).
3. Screw in the pin (27) at the positioner
lever (26) and secure it with a hex nut
on the opposite side. Note the mount-
ing position Aor Brespectively accord-
ing to Table 5 and Fig. 5.
4. Put the positioner to the adapter hous-
ing such that the pin (27) will lie
properly within the arms of the bracket
(28).
To do so, insert a 2.5 mm Allen key or
a screwdriver from the front into the
hole located below the oblong hole on
the cover plate, and push the positioner
lever in the required position.
5. Screw the positioner to the adapter
housing.
6. Relieve the actuator from the signal
pressure.
20 EB 8380-1 EN
Attachment to the control valve