SH 8384-5 EN
Translation of original instructions

Type 3730-5 Electropneumatic Positioner
Communication: FOUNDATION™ fieldbus

Edition July 2020

Definition of signal words! DANGER
Hazardous situations which, if not avoided,
will result in death or serious injury! WARNING
Hazardous situations which, if not avoided,
could result in death or serious injury

2! NOTICE
Property damage message or malfunction
Note
Additional information
Tip
Recommended action

SH 8384-5 ENPurpose of this manual
The Safety Manual SH 8384-5 contains information relevant for the use of the Type 3730-5
Positioner in safety-instrumented systems according to IEC 61508 and IEC 61511. The safety
manual is intended for planners, constructors and operators of safety-instrumented systems.
! NOTICE
Risk of malfunction due to incorrect mounting, connection or start-up of the positioner.
Î Refer to the Mounting and Operating Instructions EB 8384-5 on how to mount the positioner, perform the electric and pneumatic connections as well as start up the positioner.
Î Observe the warnings and safety instructions written in the Mounting and Operating Instructions EB 8384-5.
Further documentation
The documents listed below contain descriptions of the start-up, functioning and operation of
the positioner. You can download these documents from the SAMSON website.
Type 3730-5 Positioner
u T 8384-5:
Data sheet
u EB 8384-5: Mounting and operating instructions
u KA 8384-5: Quick guideu KH 8384-5: Configuration manual
EXPERTplus diagnostics (Type 3730-5 Positioner in firmware version 1.50 and higher)
u T 8389:
Data Sheetu EB 8389:
Operating instructions
EXPERT+ diagnostics (Type 3730-5 Positioner up to firmware version 1.49)
u T 8388:
Data sheet
u EB 8388-5: Operating instructions
Note
In addition to the positioner documentation, observe the documentation for the pneumatic
actuator, valve and other valve accessories.

SH 8384-5 EN

3Contents

1
1.1
1.2
1.3
1.4

Scope............................................................................................................5
General.........................................................................................................5
Use in safety-instrumented systems...................................................................5
Versions and ordering data.............................................................................5
Attachment.....................................................................................................62

Technical data (excerpt from EB 8384-5).........................................................6

3
3.1
3.2

Safety-related functions..................................................................................8
Fail-safe action...............................................................................................8
Protection against unauthorized changes to the configuration...........................10

4

Mounting, connection and start-up................................................................10

5
5.1
5.2
5.3
5.4

Required conditions......................................................................................10
Selection......................................................................................................11
Mechanical and pneumatic installation...........................................................11
Electrical installation......................................................................................12
Operation....................................................................................................12

6
6.1
6.2

Proof testing (periodic)..................................................................................13
Visual inspection to avoid systematic failure....................................................13
Function testing.............................................................................................13

7

Maintenance and repair...............................................................................16

8

Safety-related data and certificates...............................................................16

4

SH 8384-5 EN

Scope1 Scope
1.1 General
The Type 3730-5 Electropneumatic Positioner is a single-acting positioner for mounting on
pneumatic rotary and linear actuators with spring-return mechanism. The positioner is used
to position control valves.

1.2 Use in safety-instrumented systems
Observing the requirements of IEC 61508, the systematic capability of the pilot valve for
emergency venting as a component in safety-instrumented systems is given.
Use of the positioner is possible on observing the requirements of IEC 61511 and the required hardware fault tolerance in safety-instrumented systems up to SIL 2 (single device/
HFT = 0) and SIL 3 (redundant configuration/HFT = 1).
The positioner is regarded as a type A device according to IEC 61508-2 in view of its safetyfunctions.

1.3 Versions and ordering data
Apart from the low-temperature version, all versions of the Type 3730-5 Positioner are suitable for use in safety-instrumented systems. The optional additional equipment implements
the safety function for safety-related end position monitoring (limit contact SJ2-SN option)and the alternative emergency venting (solenoid valve option).
The article code written on the nameplate provides details on the optional equipment of thepositioner:
Positioner
Inductive limit contact
Solenoid valve

SH 8384-5 EN

Type 3730-5 x x x 0 x x x x 0 x 0 0 x 0 x x
Without

0

SJ2-SN (NC contact)

1

Without0With, 24 V DC

45

Technical data (excerpt from EB 8384-5)

1.4 Attachment
The positioner is suitable for the following types of attachment in combination with various
mounting parts:− Direct attachment to SAMSON Type 3277 Linear Actuators− Attachment to linear actuators according to IEC 60534-6 (NAMUR)− Attachment to linear actuators according to VDI/VDE 3847
− Attachment to SAMSON Type 3510 Micro-flow Valve− Attachment to rotary actuators according to VDI/VDE 3845, fixing levels 1 and 2

2 Technical data (excerpt from EB 8384-5)
Type 3730-5 Positioner: the technical data for the explosion-protected devices may be restricted by the limits
specified in the test certificates.
Bus connection

Fieldbus interface according to IEC 61158-2, bus-powered
Physical Layer Class 113 (without explosion protection) and 111 (explosionprotected version)
Field device according to FM 3610 entity, FISCO and FNICO

Fieldbus

Data transmission conforming to FOUNDATION™ fieldbus specification
Communication Profile Class: 31 PS, 32 L
Interoperability tested according to Interoperability Test Kit (ITK) 6.2.0

Execution times

AO FB:Local

SAMSON SSP interface and serial interface adapter
Software requirements: TROVIS-VIEW with database module 3730-5

Permissible voltage supply

9 to 32 V DC · Powered by bus line
Observe the limits in the test certificate for explosion-protected versions.

Maximum operating current

15 mA

Additional current in case of
error

0 mA

Communication

Supply30 ms

DI FB:

20 ms

PID:

40 ms

Supply air

1.4 to 7 bar (20 to 105 psi)

Air quality acc. toISO 8573-1

Max. particle size and density: Class 4 · Oil content: Class 3
Moisture and water: Class 3 · Pressure dew point at least 10 K below the lowest
ambient temperature to be expected

Signal pressure (output)

0 bar up to the supply pressure · Can be limited to 1.4/2.4/3.7 bar ±0.2 bar bysoftwareHysteresis≤0.3 %

Sensitivity≤0.1 %

6

SH 8384-5 EN

Technical data (excerpt from EB 8384-5)

Type 3730-5 Positioner: the technical data for the explosion-protected devices may be restricted by the limits
specified in the test certificates.
Air output capacity

Actuator(supply)At ∆p = 6 bar: 8.5 mn³/h · At ∆p = 1.4 bar: 3.0 mn³/h · KVmax(20 °C) = 0.09

Actuator(exhaust)

At ∆p = 6 bar: 14.0 mn³/h · At ∆p = 1.4 bar: 4.5 mn³/h · KVmax(20 °C) = 0.15

Permissible ambient
temperature–20 to +80 °C

All versions–45 to +80 °C

With metal cable gland–55 to +80 °C

Special version for low temperatures with metal cable gland(Type 3730-5xxxxxxxx0x02x0xx) 1)

The temperature limits for the explosion-protected devices may be further restrictedby the limits specified in the test certificates.
Use in safety-instrumented
systems (SIL)
Emergency venting at 0 V orover the optional solenoid valve
1)

Observing the requirements of IEC 61508, the systematic capability of the pilot
valve for emergency venting as a component in safety-instrumented systems isgiven.
Use is possible on observing the requirements of IEC 61511 and the required hardware fault tolerance in safety-instrumented systems up to SIL 2 (single device/
HFT = 0) and SIL 3 (redundant configuration/HFT = 1).

Not suitable for use in safety-instrumented systems

Solenoid valve · Approval acc. to IEC 61508/SIL
24 V DC · Reverse polarity protection · Static destruction limit 40 V
Input

Current consumption I =U – 5.7 V
3840 Ω

(corresponding to 4.8 mA at
24 V/114 mW)

Signal '0' (no response)<12 V (emergency venting at 0 V)

Signal '1' (response)> 19 V

Service life

> 5 x 106 switching cycles

KV coefficient

0.15

Inductive limit contact byPepperl+Fuchs

For connection to switching amplifier acc. to EN 60947-5-6

SJ2-SN proximity switch

Measuring plate not detected: ≥3 mA · Measuring plate detected: ≤1 mA

SH 8384-5 EN7

Safety-related functions

3 Safety-related functions
Emergency venting over the i/p converter (Fig. 1 path)

In automatic mode, the PD controller (3) compares the valve position to the control signal issued by FOUNDATION™ fieldbus. In case of a system deviation, the activation of the i/p converter is changed so that the actuator (1) is either vented or supplied with air. Fail-safe action
is triggered when the electrical input (terminals marked "IEC 1158-2") is de-energized andthe voltage at the i/p converter drops to 0 V. This causes the actuator to vent.
Emergency venting over the optional solenoid valve (Fig. 1 path)

The solenoid valve (12) is energized by a 24 V DC voltage signal. Fail-safe action is triggered when no signal (0 V DC) is applied to terminals 81/82. This causes the solenoid valve(12) to vent the output of the i/p converter to the atmosphere and causes the actuator to vent
as well.
Safety-related end position monitoring over the optional inductive limit contact(Fig. 1 path)
The inductive limit contact SJ2-SN (NAMUR NC contact) indicates the adjusted end position
in a safety-instrumented system at terminals 41/42. u EB 8384-5 for adjusting the limit contacts.

3.1 Fail-safe action
Fail-safe action is triggered by the i/p converter or solenoid valve and upon supply air failure. The positioner fully discharges its pneumatic output to the atmosphere, causing themounted actuator to be vented. As a result, the valve moves to the fail-safe position. The failsafe position depends on how the springs are arranged in the pneumatic actuator (air-toclose or air-to-open).
When the air supply fails and the optional solenoid valve is de-energized, all positioner
functions, except for open/closed-loop control, remain active (including diagnostics, positionand status feedback).
Note
The pneumatic output of the positioner can also be vented to the atmosphere over the software, e.g. by entering a suitable set point. This procedure is not a safety-instrumented function.

8

SH 8384-5 EN

Safety-related functions

IEC 1158-2

20 Serial
Interface
13

16

S
5

4

mm
%

19

15

BE2

14

BE1
41

81
82

42

w

24V DC
17

18

x

PD

11

2

3

G

G

12
6

9

8
7

1
2
3
4
5
6
7
8

Control valve
Travel sensor
PD controller
A/D converter
Microcontroller
i/p converter
Air booster
Pressure regulator

9
10
11*
12*
13

Q 10

y

Flow regulator
Volume restriction
Inductive limit contact
Solenoid valve
IEC 61158-2 interface
module14 Binary input BI1 (passive)
15* Binary input BI2 (active)

1
x

16
17*
18*
19
20
*

Display
Actuation of solenoid valve
Galvanic isolation
D/A converter
Serial interface
OptionsFig. 1: Functional diagram of the positioner

SH 8384-5 EN

9

Mounting, connection and start-up

3.2 Protection against unauthorized changes to the configuration
A change to the configuration cannot affect the safety function nor cause it to be deactivated.

4 Mounting, connection and start-up
Refer to Mounting and Operating Instructions u EB 8384-5 on how to mount, perform theelectric and pneumatic connections as well as start up the positioner.
Only use the specified original mounting parts and accessories.

Gu
Option+81-82

IEC 1158-2

+87

-88

+85

-86

+41

-42

A

B

Leakage sensor

24 V DC

Solenoid valve(optional)

BE1

Bus line

BE2(optional)
Binary contacts

Switching amplifier
EN 60947-5-6

Inductive limit
contact(optional)

Fig. 2: Electrical connection

5 Required conditions! WARNING
Risk of malfunction due to incorrect selection or wrong installation and operating conditions.
Î Only use control valves in safety-instrumented systems if the necessary conditions in theplant are fulfilled. The same applies to the mounted positioner.

10

SH 8384-5 EN

Required conditions

5.1 Selection
Î The required transit times of the control valve are observed.
The transit times to be implemented are determined by the process engineering requirements.
Tip
The minimum OPEN and CLOSE transit times can be read in Codes 40 and 41 after the
positioner has been initialized.
Î The positioner is suitable for the prevailing ambient temperature.
Versions

Temperature rangeAll–20 to +80 °C

With metal cable gland–45 to +80 °C

The temperature limits for the explosion-protected devices may be further restricted by the limits specified in the test certificates.

Î The temperature limits are observed.

5.2 Mechanical and pneumatic installation
Î The positioner is mounted properly as described in the mounting and operating instructions and connected to the air supply.
Tip
Error codes 50 to 58 indicate incorrect attachment. For safety-instrumented systems, werecommend assigning the 'Maintenance alarm' status to these errors to quickly recognize
them when they occur (indicated by on the display).
Î The maximum supply pressure does not exceed 7 bar.
Î The pneumatic air supply meets the instrument air specifications.
Particle size and quantity

Oil content

Moisture and water

Class 4

Class 3

Class 3≤ 5 µm and 1000/m³≤ 1 mg/m³

Pressure dew point: at least 10 K below thelowest ambient temperature to be expected

SH 8384-5 EN

11

Required conditions

Tip
We recommend installing a supply pressure regulator/filter upstream of the positioner.
For example, the SAMSON Type 4708 Supply Pressure Regulator with 5 µm filter cartridge can be used.
Î The supply air line has a minimum inside diameter of 4 mm.
Select the cross section and length of the line to ensure that the supply pressure at the positioner on supplying air to the actuator does not fall below the minimum limit.
Î The positioner is mounted as prescribed.
Î The vent opening at the back of the positioner remains open when the positioner is installed on site.

5.3 Electrical installation
Î The positioner is connected to the electric power supply properly as described in themounting and operating instructions.
Î Only cables whose outside diameters are suitable for the cable glands are used.
Î The electrical cables in Ex i circuits comply with the data that planning was based on.
Î The cable glands and cover screws are fastened tightly to ensure that the degree of protection is met.
Î The installation requirements for the applicable explosion protection measures are observed.
Î The special conditions specified in the explosion protection certificates are observed.

5.4 Operation
Î When the optional inductive limit contact is used, Code 38 is set to YES.
Î The inductive limit contact is adjusted mechanically to meet the specifications.

12

SH 8384-5 EN

Proof testing (periodic)

6 Proof testing (periodic)
The proof test interval and the extent of testing lie within the operator's responsibility. The
operator must draw up a test plan, in which the proof tests and the interval between them
are specified. We recommend summarizing the requirements of the proof test in a checklist.
! WARNING
Risk of dangerous failure due to malfunction in the event of emergency (actuator is notvented or the valve does not move to the fail-safe position).
Î Only use devices in safety-instrumented systems that have passed the proof test according
to the test plan drawn up by the operator.
Regularly check the safety-instrumented function of the entire SIS loop. The test intervals are
determined, for example on calculating each single SIS loop in a plant (PFDavg).

6.1 Visual inspection to avoid systematic failure
To avoid systematic failure, inspect the positioner regularly. The frequency and the scope of
the inspection lie within the operator's responsibility. Take application-specific influences into
account, such as:− Dirt blocking the pneumatic connections− Corrosion (destruction primarily of metals due to chemical and physical processes)− Material fatigue− Aging (damage caused to organic materials, e.g. plastics or elastomers, by exposure tolight and heat)− Chemical attack (organic materials, e.g. plastics or elastomer, which swell, leach out or
decompose due to exposure to chemicals)! NOTICE
Risk of malfunction due to the use of unauthorized parts.
Î Only use original parts to replace worn parts.

6.2 Function testing
Regularly check the safety function according to the test plan drawn up by the operator.

SH 8384-5 EN

13

Proof testing (periodic)

Note
Record any positioner faults and e-mail (aftersalesservice@samsongroup.com) them to
SAMSON.
Emergency venting by applying a 0 V signal to terminals marked "IEC 1158-2"
1. Supply the positioner with air within the permissible supply pressure range (max. 7 bar)which allows the valve to move to the maximum travel/angle of rotation.
2. Connect the two-wire bus line to the bus connection terminals (marked "IEC 1158-2"),
ensuring that the permissible supply voltage between 9 to 32 V DC (power by the busline) is observed.
3. Switch the positioner to automatic mode (if it has not already been done).
4. Set the input signal over FOUNDATION™ fieldbus (terminals marked "IEC 1158-2) insuch a way that the valve moves to the operating position. Check whether the valve
moves to this position.
Tip
The travel/angle of rotation in automatic mode can be read at the positioner in Code 0.
5. Disconnect the supply voltage to achieve a supply voltage of 0 V at the bus connection
terminals (marked "IEC 1158-2"). This must cause the valve to move to its fail-safe position.
6. Check whether the actuator is fully vented within the demanded time.
7. Set the input signal over FOUNDATION™ fieldbus (terminals marked "IEC 1158-2") insuch a way that the valve moves to the approx. 50 % of its travel/angle of rotation.
Check whether the valve moved to this position.
8. Disconnect the supply voltage to achieve a supply voltage of 0 V at the bus connection
terminals (marked "IEC 1158-2"). This must cause the valve to move to its fail-safe position.
9. Check whether the actuator is fully vented within the demanded time.
Tip
Connect a pressure gauge to check that the actuator has completely vented.

14

SH 8384-5 EN

Proof testing (periodic)

Emergency venting by applying a 0 V signal to terminals 81/82 (solenoid valve):
1. Supply the positioner with air within the permissible supply pressure range (max. 7 bar)which allows the valve to move to the maximum travel/angle of rotation.
2. Connect the two-wire bus line to the bus connection terminals (marked "IEC 1158-2"),
ensuring that the permissible supply voltage between 9 to 32 V DC (power by the busline) is observed.
3. Switch the positioner to automatic mode (if it has not already been done).
4. Supply the solenoid valve with a voltage >19 V DC (terminals 81/82).
5. Set the input signal over FOUNDATION™ fieldbus (terminals marked "IEC 1158-2) insuch a way that the valve moves to the operating position.
6. Set the voltage to 0 V DC (terminals 81/82).
7. Check whether the actuator is fully vented within the demanded time.
Tip
Connect a pressure gauge to check that the actuator has completely vented.
Safety-related end position monitoring
1. Supply the positioner with air within the permissible supply pressure range (max. 7 bar)which allows the valve to move to the maximum travel/angle of rotation.
2. Connect the two-wire bus line to the bus connection terminals (marked "IEC 1158-2"),
ensuring that the permissible supply voltage between 9 to 32 V DC (power by the busline) is observed.
3. Switch the positioner to automatic mode (if it has not already been done).
4. Set the input signal over FOUNDATION™ fieldbus (terminals marked "IEC 1158-2") insuch a way that the valve moves to the approx. 50 % of its travel/angle of rotation.
5. Set the input signal over FOUNDATION™ fieldbus (terminals marked "IEC 1158-2) insuch a way that the valve moves to the end position.
6. Check whether a signal is issued at terminals 41/42 when the valve has reached the end
position.
Proof test
A full stroke test must be performed as the proof test. The following value can be used for
Proof Test Coverage to calculate PFDavg:
PTC (Proof Test Coverage) = 92 % for a proof test

SH 8384-5 EN

15Maintenance and repair

7 Maintenance and repair
Only perform the work on the positioner described in u EB 8384-5.
! NOTICE
Fail-safe action impaired due to incorrect repair.
Î Service and repair work must be performed by trained staff only.
For devices operated in the low demand mode (LDM), a useful lifetime of 11 years (plus 1.5
years storage time) is confirmed by TÜV Rheinland® from the date of manufacture while taking into account the specific conditions of use specified in the Safety Manual and the Mounting and Operating Instructions.
The results of the proof test must be assessed and the maintenance scheduled based on it. In
particular, after changes (e.g. signs of ageing in elastomers, changed switching times orleakage etc.), it is essential that the manufacturer performs maintenance or repair work on
the device.
MTC (Maintenance Coverage) > 99 %8 Safety-related data and certificates
PSTC (Partial Stroke Test Coverage)

68 %PTC (Proof Test Coverage)

92 %MTC (Maintenance Coverage)>99 %Further safety-related data are listed in the following certificate.

16

SH 8384-5 EN﻿SH 8384-5 EN

17

18

SH 8384-5 EN

SH 8384-5 EN

19

SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany
Phone: +49 69 4009-0 · Fax: +49 69 4009-1507
samson@samsongroup.com · www.samsongroup.com

2020-08-18 · English

SH 8384-5 EN