GEM 1436 cPos User manual

GEMÜ 1436 cPos
Intelligent positioner and integrated process controller
Operating instructions
EN
further information
webcode: GW-1436

All rights including copyrights or industrial property rights are expressly reserved.
Keep the document for future reference.
© GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG
31.10.2023
www.gemu-group.com2 / 76GEMÜ 1436 cPos

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1 Quick commissioning
CAUTION
Hazardous situation
▶Risk of injury or damage possible.
●For correct commissioning, the product must be calibrated to the process valve via
the initialization process.
●During this commissioning, the valve is automatically opened and closed several
times. It must therefore be ensured in advance that this does not lead to a dangerous
situation.
NOTICE
Incorrect initialization
●Always carry out initialization without operating medium pressure on the process valve. Carry out initialization of the pro-
cess valve in neutral position (NO/NC).
NOTICE
●For delivery of the product assembled on a valve at the factory, the complete construction is already ready for operation at
a control pressure of 5.5 to 6 bar without operating pressure. A reinitialization is recommended if the plant is operated with
a different control pressure or if the mechanical end positions have been changed (e.g. seal replacement on the valve or ac-
tuator replacement). The initialization is retained even in the event of voltage cutoff.
NOTICE
●For delivery of the product without default setting (e.g. for delivery without valve) initialization must be carried out once for
correct operation. This initialization must be repeated every time that the process valve is changed (e.g. seal replacement
or actuator replacement).
NOTICE
Operating errors
●Prior to commissioning, familiarize yourself with the operation of the product.
The initialization is absolutely essential for the correct operation of the positioner and must be carried out once.
For delivery of the product pre-assembled on a valve at the factory, the complete construction is already ready for operation at a
control pressure of 5.5 to 6 bar without operating pressure - the positioner is in automatic operation. A reinitialization is recom-
mended if the plant is operated with a different control pressure or if the mechanical end positions have been changed (e.g. seal
replacement on the valve or actuator replacement).
The initialization is retained even in the event of voltage cutoff.
Prerequisites:
- Mounted to the valve.
- Air supply, max. 7 bar, connected.
- 24 V DC supply voltage connected.
- Set value and actual value signals need not be connected.
- For correct commissioning proceed as described in the following flow chart:
NOTICE
Tip for use
▶During automatic initialization of actuators whose movement profiles are not continuous (i.e. with undefined stopping or
stalling, e.g. with large size butterfly valves), it may not be possible to clearly detect the end positions and unjustified error
messages may appear (for example LEAKAGE).
▶Manual initialization with sequential movement through the menu by the operator or, if possible, acknowledging the error
message to repeat the step may help here (see “Manual initialization“, page32).
1 Quick commissioning

www.gemu-group.com4 / 76GEMÜ 1436 cPos
1 Quick commissioning
Menu sequence for quick initialization of the positioner
StartInitValve
OK ESC
Init Valve ESC
OK
Switching message after connecting
the supply voltage
(without default setting) (Valve
can be
opened and closed)
Press for
3 seconds
Message appears for 5
seconds and then goes
out automatically.
Alternatively this can be
hidden by pressing the "+"
key.
= automatic initialization
The product is
ready for operation and reacts
to the externally
specified set value.
In the case of the "Process
controller" option,
this must be activated separately.
The determined travel time of the valve for
both directions (open/close) is displayed. To
change the travel time, this step can be
interrupted by pressing the -> key ("adjust
nozzle(s)" display) and influenced via the
pneumatic throttles at the rear. Fine
adjustment is carried out by repeating the
travel time measurement several times and
sequentially changing the throttle position. If
values of <1.0 sec. are displayed, it is
strongly advisable to use the throttles.
Travel times of >1.0 sec. are recommended
in order to achieve optimal control results
-> See also chapter "Throttle settings"
Automatic quick initialization:
The positioner adapts to the valve when automatic initialization is started (via the Start Init Valve parameter). Relevant paramet-
ers are independently and automatically retrieved. This procedure can take a few minutes, dependent on the valve. The initializa-
tion can alternatively be started via the Init Valve parameter in the Set Basics menu item.
If the message Init Valve Ok appears, the product is ready for operation and can be set to the desired operating mode. Further
information (see “Working level (Mode)“, page39).
If an error message appears during the initialization process (see “Error messages during initialization“, page35).

Contents
1 Quick commissioning .......................................... 3
2 General information ............................................. 6
2.1 Information .................................................... 6
2.2 Symbols used ................................................ 6
2.3 Definition of terms ........................................ 6
2.4 Warning notes ............................................... 6
3 Safety information ............................................... 7
4 Product description ............................................. 7
4.1 Construction .................................................. 7
4.2 Description ..................................................... 7
4.3 Function ......................................................... 8
4.4 Fail safe function ........................................... 8
4.5 Product label ................................................. 8
5 GEMÜ CONEXO .................................................... 8
6 Intended use ........................................................ 9
7 Order data ........................................................... 10
8 Technical data ..................................................... 11
9 Dimensions ......................................................... 16
9.1 Positioner dimensions .................................. 16
9.2 Direct mounting to quarter turn actuators ... 17
9.3 Dimensions of the travel sensor, mounting
options and mounting facilities ................... 17
10 Manufacturer's information .................................. 18
10.1 Delivery .......................................................... 18
10.2 Transport ....................................................... 18
10.3 Storage ........................................................... 18
11 Assembly ............................................................. 18
11.1 Preparations for assembly to the valve ....... 18
11.2 Linear travel sensor mounting kit assembly
for remote mounting ..................................... 18
11.3 Threaded adapter assembly (linear actu-
ator) ................................................................ 18
11.4 Preparations for assembly to the valve
(quarter turn actuator) .................................. 19
11.5 Rotary travel sensor mounting kit as-
sembly ............................................................ 19
11.6 Direct mounting on linear actuators ............ 20
11.7 Remote mounting on linear actuators ......... 21
11.8 Direct mounting to quarter turn actuators ... 21
11.9 Remote mounting to quarter turn actuators 22
11.10 Checking the mechanical mounting ............ 23
11.11 Mounting the mounting bracket ................... 23
12 Pneumatic connection ......................................... 23
12.1 Connection diagram for linear actuators ..... 24
12.1.1 Connection diagram for NC valves
(Normally Closed) ............................ 24
12.1.2 Connection diagram for NO valves
(Normally Open) ............................... 24
12.1.3 Connection diagram for double act-
ing valves .......................................... 24
12.2 Connection diagram for quarter turn actuat-
ors .................................................................. 24
12.2.1 Connection diagram for NC/NO
valves (Normally Closed/Normally
Open) ................................................ 24
12.2.2 Connection diagram for double act-
ing valves .......................................... 25
12.2.3 Note for vertical pneumatic connec-
tions .................................................. 25
12.3 General information ...................................... 25
13 Electrical connection ........................................... 25
14 Fail safe function ................................................. 29
15 Commissioning .................................................... 29
15.1 With default setting (positioner supplied
mounted to the valve) ................................... 29
15.2 Without default setting (when supplied
without a valve) ............................................. 30
15.3 Setting the throttle screws ........................... 38
15.3.1 Travel time measurement during
initialization ...................................... 38
16 Operation ............................................................. 39
17 Troubleshooting .................................................. 64
18 Inspection and maintenance ................................ 67
18.1 Spare parts .................................................... 67
18.2 Cleaning the product ..................................... 67
19 Disassembly ........................................................ 67
20 General information regarding control engineer-
ing ....................................................................... 67
21 Glossary .............................................................. 70
22 Disposal .............................................................. 70
23 Returns ................................................................ 70
24 EU Declaration of Conformity in accordance with
2014/30/EU (EMC Directive) ................................ 71
25 EU Declaration of Conformity In accordance with
2011/65/EU (RoHS Directive) ............................... 72
26 Declaration of Incorporation according to
2006/42/EC (Machinery Directive) ....................... 73
27 Keyword index ..................................................... 74
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www.gemu-group.com6 / 76GEMÜ 1436 cPos
2 General information
2 General information
2.1 Information
- The descriptions and instructions apply to the standard ver-
sions. For special versions not described in this document
the basic information contained herein applies in combina-
tion with any additional special documentation.
- Correct installation, operation, maintenance and repair work
ensure faultless operation of the product.
- Should there be any doubts or misunderstandings, the Ger-
man version is the authoritative document.
- Contact us at the address on the last page for staff training
information.
- For ProfiNet, Profibus DP and DeviceNet fieldbus variants,
separate documents are available for the fieldbus-specific
and relevant procedures.
General commissioning and basic operation have already
been described in this document.
2.2 Symbols used
The following symbols are used in this document:
Symbol Meaning
Tasks to be performed
Response(s) to tasks
– Lists
2.3 Definition of terms
Working medium
The medium that flows through the GEMÜ product.
Control function
The possible actuation functions of the GEMÜ product.
Control medium
The medium whose increasing or decreasing pressure causes
the GEMÜ product to be actuated and operated.
Speed-APfunction
Speed Assembly and Programming, a particularly
user-friendly commissioning function for fast mounting, auto-
mated setting and initialization of GEMÜ products. Dependent
on type, activation uses an external impulse signal or existing
precautions on the device (magnetic or housing switch).
Changeover to normal operating mode takes place automatic-
ally after successful completion.
2.4 Warning notes
Wherever possible, warning notes are organised according to
the following scheme:
SIGNAL WORD
Type and source of the danger
Possible
symbol for the
specific
danger
Possible consequences of non-observance.
Measures for avoiding danger.
Warning notes are always marked with a signal word and
sometimes also with a symbol for the specific danger.
The following signal words and danger levels are used:
DANGER
Imminent danger!
▶Non-observance can cause death or
severe injury.
WARNING
Potentially dangerous situation!
▶Non-observance can cause death or
severe injury.
CAUTION
Potentially dangerous situation!
▶Non-observance can cause moderate
to light injury.
NOTICE
Potentially dangerous situation!
▶Non-observance can cause damage to
property.
The following symbols for the specific dangers can be used
within a warning note:
Symbol Meaning
Danger of explosion
Exhaust air and cycle duties generate noise
Corrosive chemicals!

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3 Safety information
The safety information in this document refers only to an indi-
vidual product. Potentially dangerous conditions can arise in
combination with other plant components, which need to be
considered on the basis of a risk analysis. The operator is re-
sponsible for the production of the risk analysis and for com-
pliance with the resulting precautionary measures and re-
gional safety regulations.
The document contains fundamental safety information that
must be observed during commissioning, operation and main-
tenance. Non-compliance with these instructions may cause:
- Personal hazard due to electrical, mechanical and chemical
effects.
- Hazard to nearby equipment.
- Failure of important functions.
- Hazard to the environment due to the leakage of dangerous
substances.
The safety information does not take into account:
- Unexpected incidents and events, which may occur during
installation, operation and maintenance.
- Local safety regulations which must be adhered to by the
operator and by any additional installation personnel.
Prior to commissioning:
1. Transport and store the product correctly.
2. Do not paint the bolts and plastic parts of the product.
3. Carry out installation and commissioning using trained
personnel.
4. Provide adequate training for installation and operating
personnel.
5. Ensure that the contents of the document have been fully
understood by the responsible personnel.
6. Define the areas of responsibility.
7. Observe the safety data sheets.
8. Observe the safety regulations for the media used.
During operation:
9. Keep this document available at the place of use.
10. Observe the safety information.
11. Operate the product in accordance with this document.
12. Operate the product in accordance with the specifications.
13. Maintain the product correctly.
14. Do not carry out any maintenance work and repairs not de-
scribed in this document without consulting the manufac-
turer first.
In cases of uncertainty:
15. Consult the nearest GEMÜ sales office.
4 Product description
4.1 Construction
1
2
4
3
5
Item Name Materials
1Operating unit with dis-
play
Polyester film with ac-
rylic glass
2Housing cover PSU
3Housing base PP 30% glass fibre rein-
forced
4Travel sensor (integ-
rated linear poten-
tiometer, integrated
rotary potentiometer or
connector for external
travel sensor depending
on version)
5Mounting kit, valve-spe-
cific
Materials/parts, valve-
specific
4.2 Description
The GEMÜ 1436 cPos digital electro-pneumatic positioner has
an optional integrated process controller to control pneumat-
ically operated process valves with single acting or double
acting linear or quarter turn actuators. When using the op-
tional process controller, the signals from the sensors (e.g.
flow, level, pressure, temperature) are detected and the media
adjusted according to the specified set value. GEMÜ 1436
cPos has a robust aluminium housing with protected operat-
ing keys and an LCD display which allows the product to be in-
dividually adapted to complex control tasks. With additional
equipment, the positioner can be used directly in fieldbus en-
vironments.
4 Product description

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5 GEMÜ CONEXO
4.3 Function
The product is an intelligent electro-pneumatic positioner for
mounting to pneumatic actuators. It can be operated as a po-
sitioner or a process controller depending on the design.
The product is directly mounted on the actuator as standard.
The travel sensor is already integrated in the positioner (the
product can be optionally ordered with an M12 connector for
remote mounting of the travel sensor).
The travel sensor measures the current position of the valve
and reports it to the electronic system of the product, which
correlates the actual value of the valve with the set value and
adjusts the valve if necessary.
If the positioner is ordered with an additional process control-
ler (optional), a current actual value signal (e.g. level, pres-
sure, temperature, flow) is evaluated and the positioner ad-
opts the function of a process controller.
The information required can be called up on the two-line dis-
play of the product. Self-explanatory help texts that explain
the meaning of the parameters called-up are also displayed.
The product is operated locally using four keys.
4.4 Fail safe function
The product has a fail safe function, which switches the out-
puts in a controlled manner if the pneumatic air supply or the
electrical supply voltage fails (see “Fail safe function“,
page29). This fail safe function does not replace the re-
quired plant-specific safety devices. The product is not a
safety control system.
4.5 Product label
Fritz-Müller-Str- 6-8
D-74653 Ingelfingen
88254004
1436000Z1SA010001030
24V Iw:0/4-20mA
single 150l/min
10563677 | 0001
-
2017
0-60° C
13
PST max 7,0bar
Batch number
Serial number
Item number
Year of
manufacture
Max. permissible
control pressure
Design in accordance
with order data
Device
version
NOTICE
Device version
▶These instructions are valid for devices from device ver-
sion 10. It is possible to determine which firmware has
been used on the basis of the device version. For older
devices (device version older than 10), different operating
instructions with potentially different operating specifica-
tions are used. A change to the device version can also
be due to technical changes to the hardware, which is
why several device versions describe the same firmware
version.
Device
version
Firmware version Effective
from
Changes
10 V2.0.0.0 05/2014
Device
version
Firmware version Effective
from
Changes
11 V2.0.3.5 11/2018 Adaptation to the
new display con-
troller
12 V2.0.3.5 12/2018 No change to the
firmware
13 V2.0.3.6 05/2019 Profinet and Error-
Action function ex-
tension,
"Safe" selection op-
tion
5 GEMÜ CONEXO
Order variant
In the corresponding design with CONEXO, this product has
an RFID chip (1) for electronic identification purposes. The po-
sition of the RFID chip can be seen below. The CONEXO pen
helps read out information stored in the RFID chips. The CON-
EXO app or CONEXO portal is required to display this informa-
tion.
1
For further information please read the operating instructions
for CONEXO products or the CONEXO datasheet.
Products such as the CONEXO app, the CONEXO portal and
the CONEXO pen are not included in the scope of delivery and
need to be ordered separately.

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6 Intended use
DANGER
Danger of explosion
▶Risk of severe injury or death.
●Do not use the product in potentially
explosive zones.
●The product can control valves in po-
tentially explosive areas using special
wiring (installation of the positioner
outside the EX area).
WARNING
Improper use of the product!
▶Risk of severe injury or death
▶Manufacturer liability and guarantee will be void.
●Only use the product in accordance with the operating
conditions specified in the contract documentation and in
this document.
The product is not intended for use in potentially explosive
areas.
The product with integrated pilot valves is designed for linear
actuators, has a microprocessor-controlled intelligent position
control as well as an analogue travel sensor system (poten-
tiometer) and is connected in a force-locking way with the ac-
tuator spindle by means of a mounting kit (spring, operating
bush). The valve position and the integrated travel sensor can
be monitored via the electrical connections. The pneumatic
actuator is directly operated and controlled by means of the
pilot valves.
●Use the product in accordance with the technical data.
6 Intended use

7 Order data
The order data provide an overview of standard configurations.
Please check the availability before ordering. Other configurations available on request.
Note: Pneumatic connecting components (union and compressed air tube) for the connection between the process valve and
positioner are included with each positioner.
Note: A valve specific mounting kit is required for assembly. For designing the mounting kit, the valve type, nominal size, control
function and actuator size must be stated.
Order codes
1 Type Code
Positioner,
electro-pneumatic
cPos
1436
2 Fieldbus Code
Without 000
DeviceNet DN
Profibus DP DP
Profinet PN
3 Accessory Code
Accessory Z
4 Action Code
Single acting 1
Double acting 3
5 Device version Code
Positioner SA01
Positioner and process controller PA01
6 Option Code
Without 00
2 additional digital inputs 24 V DC 01
7 Flow rate Code
150 l/min 01
200 l/min 02
300 l/min (Booster) 03
8 Travel sensor length Code
Potentiometer, 30 mm length 030
Potentiometer, 50 mm length 050
Potentiometer, 75 mm length 075
Potentiometer, 90° travel 090
Remote potentiometer,
M12 connector
S01
9 Type of design Code
Standard
Dead zone presetting2% 2442
Dead zone presetting5% 2443
Inversed direction,
for quarter turn valves control function NO (2)
6960
10 CONEXO Code
Without
Integrated RFID chip for electronic identification and
traceability
C
Order example
Ordering option Code Description
1 Type 1436 Positioner,
electro-pneumatic
cPos
2 Fieldbus 000 Without
3 Accessory Z Accessory
4 Action 1 Single acting
5 Device version SA01 Positioner
6 Option 00 Without
7 Flow rate 01 150 l/min
8 Travel sensor length 030 Potentiometer, 30 mm length
9 Type of design Standard
10 CONEXO Without
7 Order data
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8 Technical data
8.1 Medium
Working medium: Compressed air and inert gases
Dust content: ≤ 10 mg/m³/particle size ≤ 40 µm (class 7)
Pressure dew point: Class 4, max. pressure dew point +3 °C
Oil content: Class 4, max. oil concentration 5 mg/m³
Quality classes to DIN ISO 8573-1
8.2 Temperature
Ambient temperature: 0 — 60 °C
0 — 50 °C (Profinet code PN)
Storage temperature: 0 — 60 °C
8.3 Product conformity
EMC Directive: 2014/30/EU
Technical standards used:
Interference emission: DIN EN 61000-6-4 (09/2011)
DIN EN 61326-1(industry) (01/2006)
Interference resistance: DIN EN 61000-6-2 (03/2006)
DIN EN 61326-1(industry) (10/2006)
8.4 Pressure
Operating pressure: 1.5 — 7 bar
The applied pressure must not exceed the maximum control pressure of the process valve.
Flow rate: Flow rate (code) Specification l / min 1) Specification Nl / min 2)
Code 01 150 l/min 84 Nl/min
Code 02 200 l/min 100 Nl/min
Code 03 (Booster) 300 l/min 172 Nl/min
1) Reference condition: 6 → 0 bar at 25 °C
2) Reference condition: 6 → 5 bar at 25 °C
Air consumption: 0 Nl/min (when idle)
8.5 Mechanical data
Installation position: Optional
Protection class: IP 65 acc. to EN 60529
Weight: 600 g
GEMÜ 1436 cPoswww.gemu-group.com 11 / 76
8 Technical data

Travel sensor: Integrated for direct mounting
Linear design Quarter turn
design
Detection range: 0–30 mm 0–50 mm 0–75 mm Angle of rota-
tion
0 - 93°
Operating range: 0–30 mm 0–50 mm 0–75 mm Angle of rota-
tion
0 - 93°
Minimum travel sensor change: ≥ 3 % (only relevant for initialization)
Resistance R: 3 kΩ 5 kΩ 5 kΩ 3 kΩ
Correlation - Travel sensor 1)
spindle/valve position
Retracted (top)
≙ 100% (valve open)
90° ≙ 100%
(valve open)
Extended (bottom)
≙ 0% (valve closed)
0° ≙ 0% (valve
closed)
1) Type of design code 6960: Inversed mode of action compared with description
(Travel sensor signal inversed). For valves with inverted correlation.
8.6 Acoustic data
Noise emission: > 80 dB (A)
8.7 Electrical data
8.7.1 Power supply
Supply voltage: 24 V DC (-5/+10%)
Power consumption: Order variant
Without fieldbus
(code 000)
Profinet fieldbus
(code PN)
Profibus fieldbus
(code DP)
DeviceNet fieldbus
(code DN)
Single acting: ≤ 4.5 W ≤ 8.6 W ≤ 5.2 W ≤ 4.5 W
Double acting /
Booster:
≤ 6.2 W ≤ 10.7 W ≤ 7.1 W ≤ 6.4 W
plus in each
case:
max. 24 W for act-
ive digital outputs
with max. on-load
current
-
Reverse battery protec-
tion:
Yes
Duty cycle: Continuous duty
Electrical protection
class:
III
8.7.2 Analogue inputs
Set value / actual value: - Set value and actual value input are galvanically isolated from the supply voltage
- Set value and actual value input are not galvanically isolated from the actual value output
- Set value and actual value input are not galvanically isolated from each other
Set value input: 0/4 - 20 mA (adjustable)
Process actual value in-
put:
0/4 - 20 mA (adjustable)
Only for device version code PA01
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8 Technical data

Input type: passive
Input resistance: 120 Ω (+ approx. 0.7 V voltage drop due to reverse battery protection)
Accuracy/linearity: ≤ ±0.3% of full flow
Temperature drift: ≤ ±0.3% of full flow
Resolution: 12 bit
Reverse battery protec-
tion:
Yes
Overload proof: Yes (up to ± 24 V DC)
8.7.3 Analogue output
Actual value output: 4–20 mA
Output type: Active
Load resistor: Max. 600 Ω
Accuracy: ≤ ±1% of full flow
Temperature drift: ≤ ±0.5% of full flow
Resolution: 12 bit
Short-circuit proof: Yes
Overload proof: Yes (up to ± 24 V DC)
8.7.4 Digital input
Note: The additional digital inputs 1 / 2 must be ordered via the ordering option "Option".
In the fieldbus versions, the function of the digital inputs can be used as standard via the bus com-
munication.
Inputs: 1 / 2
Function: selectable via software
(DigIn 1; DigIn2; DigInW; DigInX) (reference: GND X1:3)
Input voltage: 24 V DC
Input current: 2.5 mA DC at 24 V DC
High level: >14 V DC
Low level: < 8 V DC
8.7.5 Digital output
Switching outputs: K1 / K2
Function: Can be selected using software
Switching voltage: Supply voltage
max. 0.5 A
Drop voltage: Max. 2.5 V DC at 0.5 A
GEMÜ 1436 cPoswww.gemu-group.com 13 / 76
8 Technical data

Type of contact: PNP
Pull-Down resistance: 120 kΩ
Short-circuit proof: Yes
Overload proof: Yes (up to ± 24 V DC)
8.7.6 Travel sensor input (for travel length code S01 – remote potentiometer)
Note: Travel sensor input galvanically isolated from supply voltage, not galvanically isolated from the set
value/actual value inputs and actual value output.
Input voltage
range:
0 to UP+
Supply
voltage UP+:
Typically 10 V DC
Resistance range of re-
mote potentiometers:
1 to 10 kΩ
Input resistance: 620 kΩ
Accuracy/linearity: ≤ ±0.3% of full flow
Temperature drift: ≤ ±0.3% of full flow
Resolution: 12 bit
Short-circuit proof: Yes
Overload proof: Yes (up to ± 24 V DC)
8.7.7 Positioner data
Note: The following diagram is valid for valves with a standard assignment of the spindle position to the
valve position.
(See section "Mechanical data, correlation between travel sensor spindle/valve position")
Control diagram: Default setting / The control characteristic is adjustable.
0
4
mA
mA
20
20
15
16
10
12
5
8
0
75
100
50
25
Valve opening degree [%]
Set value input (mA)
During initialization, the 1436 cPos positioner automatically detects the control function of the
valve and adjusts itself by default so that the valve is closed when the signal is 0/4 mA.*
The assignment can subsequently be changed using parameters.
* For double-acting actuators, depends on the pneumatic actuator
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8 Technical data

8.7.7.1 Positioner
System deviation
(dead zone):
1 % default setting
≥ 0.1 % (adjustable)
≤ 2.0 % (preset, K-no. 2442)
≤ 5.0 % (preset, K-no. 2443)
Parameterisation: adjustable
Initialization: automatic or manual
Close tight function: option
8.7.7.2 Process controller
Option only for device version code PA01
Controller type: Continuous controllers
PID parameters: adjustable
Process actual value in-
put:
0/4 - 20 mA (adjustable)
8.7.8 Interfaces
RS232 Profibus DP DeviceNet Profinet
Function Parameterization via
web browser
Parameterization/process data
Transmission rates - 9.6k /19.2k / 45.45k /
93.75k / 500k / 1.5M /
3M / 6 M / 12 M baud**
125k / 250k / 500k
baud
100M baud***
** Auto Baud: The device has an Auto Baud function and therefore automatically adjusts to the bus-side configuration of the
transmission rate.
*** Two switches are connected in series internally between connection X1 and X3.
Communication lead time during operation in line structure (connection X1 and X3) therefore double that of a "standard two-
port device".
GEMÜ 1436 cPoswww.gemu-group.com 15 / 76
8 Technical data

9 Dimensions
9.1 Positioner dimensions
123
10
G 1/8
42,3
G 1/8
G 1/8
20,2
41,5
□ 90 26,5
M 16x1
SW 27
X1
X2
X3
X
□90 □
90
Travel sensor
length
Code
X
030 10.3
050 32.5
075 57.5
Dimensions in mm
www.gemu-group.com16 / 76GEMÜ 1436 cPos
9 Dimensions

9.2 Direct mounting to quarter turn actuators
□90
123
X
□90
ø52
159
A
D
C
30
X
WH
Shaft height
WH
Hole spacing
D
A C
20.0 80.0 40.0 100.0
30.0 80.0 50.0 100.0
50.0 130.0 70.0 150.0
Dimensions in mm
9.3 Dimensions of the travel sensor, mounting options and mounting facilities
For dimensions of travel sensors 4231 and 4232, which are used to measure the travel from the process valve, as well as the
mounting bracket for wall mounting and the external mounting option with the corresponding mounting bracket for quarter turn
actuators of the 1436, see the 1436 cPos datasheet.
GEMÜ 1436 cPoswww.gemu-group.com 17 / 76
9 Dimensions

www.gemu-group.com18 / 76GEMÜ 1436 cPos
10 Manufacturer's information
10 Manufacturer's information
10.1 Delivery
●Check that all parts are present and check for any damage
immediately upon receipt.
The product's performance is tested at the factory. The scope
of delivery is apparent from the dispatch documents and the
design from the order number.
10.2 Transport
1. Only transport the product by suitable means. Do not drop.
Handle carefully.
2. After the installation dispose of transport packaging ma-
terial according to relevant local or national disposal regu-
lations / environmental protection laws.
10.3 Storage
1. Store the product free from dust and moisture in its ori-
ginal packaging.
2. Avoid UV rays and direct sunlight.
3. Do not exceed the maximum storage temperature (see
chapter "Technical data").
4. Do not store solvents, chemicals, acids, fuels or similar
fluids in the same room as GEMÜ products and their spare
parts.
11 Assembly
11.1 Preparations for assembly to the valve
1. Move the actuator A into zero position (actuator vented).
2. Remove optical position indicator 2 and / or protective cap
1 from the actuator top.
A
12
11.2 Linear travel sensor mounting kit assembly for
remote mounting
CAUTION
Pretensioned spring!
▶Damage to the device.
●Slowly release the tension in the spring.
CAUTION
Do not scratch the spindle!
▶A damaged spindle surface may cause failure of the
travel sensor.
Item Name
1 Travel sensor
2 Spindle
3 Spring
4 Operating bush
5 Guide bush*
6 Threaded adapter**
*Included depending on version
**If a threaded adapter is included, it must be screwed into
the actuator top of the process valve
The process described below refers to the mounting kit as-
sembly for direct and remote mounting. For direct mounting,
the travel sensor that is shown is integrated in the housing of
the positioner.
1
2
4
3
2
1
5
4
3
2
1
5
1. Pull the spindle 2 out of the travel sensor 1.
2. If included, push the guide bush 5 taper over the spindle 2
first.
3. Push the spring 3 over the spindle 2 and secure with the
operating bush 4.
4. Tighten the operating bush 4 by turning it clockwise.
5. Push in the spindle 2 as far as it will go on the spring 3
and then slowly release the pressure on the spring 3.
11.3 Threaded adapter assembly (linear actuator)
With some mounting kits, it is necessary to install a threaded
adapter as well. This threaded adapter is enclosed with the re-
quired mounting kits. Valves with a normally open and double
acting control function (code 2+3) also include additional O-
rings (1+2).

www.gemu-group.com 19 / 76 GEMÜ 1436 cPos
1
3
2
1. Move the actuator to the closed position.
2. Place O-rings 1 and 2 into threaded adapter 3.
3. Screw threaded adapter 3 into the actuator opening as far
as it will go and tighten.
11.4 Preparations for assembly to the valve (quarter
turn actuator)
1. Move the actuator A into zero position (actuator vented).
1
2
A
2. Remove the screw 1 from the trigger cam 2.
11.5 Rotary travel sensor mounting kit assembly
NOTICE
Determining the rotational direction of the actuator
▶When viewed from above, the rotational direction of the
actuator must be anticlockwise, when the actuator moves
from the CLOSED to the OPEN position. In cases where
the actuator turns in a clockwise direction, the travel
sensor's end position, contrary to given instructions,
needs to be in the opposite direction.
2
1. The shaft of the rotary travel sensor is provided with a
marking 2.
0
90
2
2. Set the marking 2 so that it is correctly aligned with the 0°
position on the underside of the travel sensor housing.
The 0° position is located on the left-hand side of the
cable exit (the electrical operating range is located in the
travel range between the 0° and 90° positions).
eco
OPEN
ERROR
CLOSED
POWER
2
4
3. Place the adapter 4 onto the shaft of the rotary travel
sensor 2 without twisting the shaft.
11 Assembly

www.gemu-group.com20 / 76GEMÜ 1436 cPos
11 Assembly
4
6
4. Mount the black housing of the rotary travel sensor 4 in
parallel to the mounting bracket 6 in a longitudinal direc-
tion.
7
4
6
5. Mount the external rotary travel sensor 7 with the adapter
4 on the mounting bracket 6.
7
6
8
6. Note the direction of the scale 8.
ðView from below of the travel sensor 7 with mounting
bracket 6.
11.6 Direct mounting on linear actuators
1
3
1. Mount (see “Linear travel sensor mounting kit assembly
for remote mounting“, page18)the travel sensor mounting
kit.
2. Move the actuator 3 to the open position.
3. Guide the product 1 as far as it will go into the actuator
opening or the adapter, and screw it in in a clockwise dir-
ection against the initial spring tension, and tighten it us-
ing a suitable WAF27 open-ended spanner.
4. Connect the product's pneumatic supply and connect the
product to the process valve.
NOTICE
Damage to internal stop
▶Do not turn the internal stop when assembling the
product.
If correctly mounted to the corresponding valve, the product
can be turned 320°.