GEM 1241 Manual de usuario
GEMÜ 1241
Electrical position indicator
Operating instructions
EN
further information
webcode: GW-1241
All rights including copyrights or industrial property rights are expressly reserved.
Keep the document for future reference.
© GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG
19.10.2023
www.gemu-group.com2 / 20GEMÜ 1241
Contents
1 General information ............................................. 4
1.1 Information .................................................... 4
1.2 Symbols used ................................................ 4
1.3 Warning notes ............................................... 4
2 Safety information ............................................... 4
3 Product description ............................................. 5
3.3 Function ......................................................... 5
4 GEMÜ CONEXO .................................................... 6
5 Correct use .......................................................... 6
6 Order data ........................................................... 7
7 Technical data ..................................................... 8
8 Dimensions .......................................................... 9
9 Manufacturer's information .................................. 10
9.1 Delivery .......................................................... 10
9.2 Packaging ...................................................... 10
9.3 Transport ....................................................... 10
9.4 Storage ........................................................... 10
10 Assembly and installation .................................... 10
10.2 Threaded adapter assembly (linear actu-
ator) ................................................................ 10
10.3 Mounting kit assembly .................................. 10
10.4 Assembling the stroke limiter (linear actu-
ator) ................................................................ 12
10.6 Preparations for assembly to the valve
(quarter turn actuator) .................................. 13
10.9 Mounting kit assembly (quarter turn actu-
ator) ................................................................ 13
11 Electrical connection ........................................... 15
11.1.1 Connection diagram - NAMUR
(code N1) .......................................... 15
11.2 M12 plug, 5-pin (code 01) ............................. 15
12 Troubleshooting .................................................. 16
13 Inspection and maintenance ............................... 16
14 Disassembly ........................................................ 16
15 Disposal .............................................................. 16
16 Returns ................................................................ 16
17 Declaration of Incorporation according to
2006/42/EC (Machinery Directive) ....................... 17
18 Declaration of conformity according to 2014/30/
EU (EMC Directive) ............................................... 18
19 Declaration of Conformity in accordance with
2014/34/EU (ATEX) ............................................. 19
GEMÜ 1241www.gemu-group.com 3 / 20
www.gemu-group.com4 / 20GEMÜ 1241
1 General information
1 General information
1.1 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.
1.2 Symbols used
The following symbols are used in this document:
Symbol Meaning
Tasks to be performed
Response(s) to tasks
– Lists
1.3 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!
Danger of explosion
Electric shock by high voltage
2 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.
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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.
3 Product description
3.1 Construction
1
2
5
3
4
Item Name Materials
1 Housing cover PC
2 Housing base PPS
3 Electrical connection SS, PP
4 Adapter piece SS
5 Mounting kit, valve spe-
cific
SS, PP
Seals NBR
3.2 Description
The GEMÜ 1241 electrical position indicator is suitable for
mounting to pneumatically operated actuators. The position
of the valve spindle is reliably electronically detected and fed
back via the play-free and non-positive mounting by means of
a 2-wire proximity switch (NAMUR). The product has been de-
signed specially for valves with a stroke of 5 to 75 mm.
3.3 Function
The GEMÜ 1241 electrical position indicator is used to feed
back and verify the position of valves operated with pneu-
matic actuators. The spindle of the electrical position indic-
ator is connected to the valve spindle of the linear actuator
through play-free and non-positive mounting or by adapting to
quarter turn actuators, and is moved along with the linear
movement of the actuator. The cam fixed to the spindle then
actuates the integrated proximity switches, which are used to
transmit the electronic signal. Depending on the version, the
electrical position indicator is equipped with one to two prox-
imity switches.
3.4 Product label
Design in accordance with order data
Item number
Year of manufacture
Traceability number Serial number
XXXXXXX | XXXX
The manufacturing month is coded under the traceability
number and can be requested from GEMÜ. The product was
manufactured in Germany.
3 Product description
www.gemu-group.com6 / 20GEMÜ 1241
4 GEMÜ CONEXO
4 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.
Installing the RFID chip (1)
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.
5 Correct use
DANGER
Danger of explosion!
▶Risk of severe injury or death
●Do not use the product in potentially
explosive zones.
●Only use the product in potentially ex-
plosive zones confirmed in the declara-
tion of conformity.
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 with the special version X order option is inten-
ded for use in potentially explosive areas of zone 2 with
gases, mists or vapours and zone 22 with combustible dusts
in accordance with EU directive 2014/34/EU (ATEX).
The product has the following explosion protection marking:
ATEX
Gas: II 2G Ex ib IIB T4 Gb
Dust: II 2D Ex ib IIIC T120°C Db
EC type examination certificate: IBExU21ATEX1097 X
Notified body: IBExU, No. 0637
IECEx
Gas: Ex ib IIB T4 Gb
Dust: Ex IIIC T120°C Db
Certificate: IECEx IBE 21.0043 X
The product has been developed in compliance with the fol-
lowing harmonised standards:
- EN IEC 60079-0:2019 (IEC 60079-0, edition 7)
- EN 60079-11:2012 (IEC 60079-11, edition 6)
Use of the product is permissible in the following ambient
temperature ranges: 0 to +60°C
For use in potentially explosive areas, the following
conditions or operation limits must be observed:
Special conditions of use
1. The special conditions of the Ex components used must
be observed.
2. The housing must be installed protected against mechan-
ical influences.
3. Layers of dust > 5 mm must be avoided.
6 Order data
The order data provide an overview of standard configurations.
Please check the availability before ordering. Other configurations available on request.
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
Electrical position indicator ATEX 1241
2 Fieldbus Code
Without 000
3 Accessory Code
Accessories Z
4 Housing material Code
PPS base, PC cover 01
5 Device version Code
Open A0
Open/Close AZ
Close Z0
6 Electrical connection Code
M12 plug, 5-pin 01
M16 Skintop cable gland 03
7 Option Code
Without 00
8 Switch Code
Proximity switch, 2-wire, NAMUR
P+F, NJ1,5-6,5-15-N-Y180094
N1
9 Connection diagram Code
Terminals, NAMUR N1
M12 plug, 5-pin N2
10 Travel sensor version Code
Potentiometer, 75 mm length 075
Order example
Ordering option Code Description
1 Type 1241 Electrical position indicator
2 Fieldbus 000 Without
3 Accessory Z Accessories
4 Housing material 01 PPS base, PC cover
5 Device version A0 Open
6 Electrical connection 03 M16 Skintop cable gland
7 Option 00 Without
8 Switch N1 Proximity switch, 2-wire, NAMUR
P+F, NJ1,5-6,5-15-N-Y180094
9 Connection diagram N1 Terminals, NAMUR
10 Travel sensor version 075 Potentiometer, 75 mm length
6 Order data
www.gemu-group.com 7 / 20 GEMÜ 1241
7 Technical data
7.1 Temperature
Ambient temperature: 0 — 60 °C
Storage temperature: -10 — 70 °C
7.2 Product compliance
EMC Directive: 2014/30/EU
Explosion protection: ATEX (2014/34/EU)
IECEx
ATEX marking: Gas: II 2G Ex ib IIB T4 Gb
Dust: II 2D Ex ib IIIC T120°C Db
EC type examination certificate: IBExU21ATEX1097 X
Notified body: IBExU, No. 0637
IECEx marking: Gas: Ex ib IIB T4 Gb
Dust: Ex IIIC T120°C Db
Certificate: IECEx IBE 21.0043 X
7.3 Mechanical data
Installation position: Optional
Weight: 420 g
Protection class: IP 67
Stroke: 5 — 75 mm
Measuring range radial: 0° to 90°
7.4 Electrical data
Electrical connection
type:
M12 plug, 5-pin (code 01)
M16x1.5 Skintop cable gland for cable dia. 4.5 to 10 mm, recommended wire cross section
0.75mm² x 8 cables (code 03)
7.4.1 2-wire proximity switch
Switch type: 2-wire, NAMUR, switch (code N1)
Supply voltage: 8 V DC
Current consumption: ≤ 0.1 mA (damped)
≥ 3 mA (undamped)
Intrinsically safe charac-
teristic values:
Ui = 16 V
Ii = 52 mA
Pi = 169 mW
Li = 50 µH
Ci = 30 nF
www.gemu-group.com8 / 20GEMÜ 1241
7 Technical data
8 Dimensions
142
Ø 90
14,5
86,5 26
11
SW 24
Dimensions in mm
GEMÜ 1241www.gemu-group.com 9 / 20
8 Dimensions
www.gemu-group.com10 / 20GEMÜ 1241
9 Manufacturer's information
9 Manufacturer's information
9.1 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.
9.2 Packaging
The product is packaged in a cardboard box which can be re-
cycled as paper.
9.3 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.
9.4 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.
10 Assembly and installation
NOTICE
●Pay attention to the information on product labels, in
product documentation and EC type examination certific-
ate.
●Connect cable carefully, do not damage individual wires.
●When connecting multiwire or finewire cables, prepare
the wire ends.
●Always use suitable pinch tools for pinching wire end fer-
rules in order to achieve consistent quality.
●Tighten all clamping points, even the ones not being
used.
1. Observe the national regulations and provisions.
2. Observe the installer provisions.
3. Protect M12 plugs against electrostatic build-up.
4. Protect M12 plugs against damage.
5. Lay cables securely and protect them from damage.
6. Differential voltage for two intrinsically safe electric cir-
cuits: maximum 30 V.
7. Connect open wire ends in a junction box with protection
class IP20 and higher or outside the EX area.
10.1 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
10.2 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).
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.
10.3 Mounting kit assembly
Item Name Item Name
1 Spindle 7 Flange plate
2 Spring 8 Screws
3 Operating bush 9 Pressure disc*
4 Distance piece 10 O-ring*
5 O-ring 11 O-ring*
6 Adapter
* Included depending on version.
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.
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