Stahl ISpac 9174 Series User manual

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Manual
Additional languages r-stahl.com
EN
Electronic relay module
Series 9174
– Save for future use! –

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Electronic relay module
Series 9174
Contents
1 General Information ............................................................................................3
1.1 Manufacturer .......................................................................................................3
1.2 About these Manual ............................................................................................3
1.3 Further Documents .............................................................................................3
1.4 Conformity with Standards and Regulations .......................................................3
2 Explanation of the Symbols ................................................................................4
2.1 Symbols in this Manual .......................................................................................4
2.2 Symbols on the Device .......................................................................................4
3 Safety ..................................................................................................................5
3.1 Intended Use .......................................................................................................5
3.2 Personnel Qualification .......................................................................................5
3.3 Residual Risks ....................................................................................................6
4 Transport and Storage ........................................................................................7
5 Product Selection and Project Engineering ........................................................8
6 Mounting and Installation ..................................................................................10
6.1 Mounting / Dismounting ....................................................................................10
6.2 Installation .........................................................................................................11
7 Commissioning .................................................................................................12
8 Operation ..........................................................................................................12
8.1 Operation ..........................................................................................................12
8.2 Indications .........................................................................................................12
8.3 Troubleshooting ................................................................................................12
9 Maintenance, Overhaul, Repair ........................................................................13
9.1 Maintenance .....................................................................................................13
9.2 Overhaul ...........................................................................................................13
9.3 Repair ...............................................................................................................13
10 Returning the Device ........................................................................................13
11 Cleaning ............................................................................................................14
12 Disposal ............................................................................................................14
13 Accessories and Spare Parts ...........................................................................14
14 Annex A ............................................................................................................15
14.1 Technical Data ..................................................................................................15
15 Annex B ............................................................................................................18
15.1 Device Design ...................................................................................................18
15.2 Dimensions / Fastening Dimensions .................................................................18

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General Information
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Electronic relay module
Series 9174
1 General Information
1.1 Manufacturer
R. STAHL Schaltgeräte GmbH
Am Bahnhof 30
74638 Waldenburg
Germany
Phone: [phone]
Fax: [phone]
Internet: r-stahl.com
E-Mail: [e-mail]
1.2 About these Manual
Read this manual, especially the safety notes, carefully before use.
Observe all other applicable documents (see also chapter 1.3).
Keep the manual throughout the service life of the device.
Make the manual accessible to operating and maintenance personnel at all times.
Pass the manual on to each subsequent owner or user of the device.
Update the manual every time you receive an amendment to it from R. STAHL.
ID-No.: 917460330020
Publication Code: 2019-05-13·HB00·III·en·03
Hardware version: A
The original instructions are the German edition.
They are legally binding in all legal affairs.
1.3 Further Documents
• Cabinet installation guide
• Data sheet
• Operating instructions
For documents in further languages, see r-stahl.com.
1.4 Conformity with Standards and Regulations
• Certificates and EU Declaration of Conformity: r-stahl.com.
• The device has IECEx approval. See IECEx homepage: http://iecex.iec.ch/ to view the
certificate.
• Further national certificates can be downloaded via the following link:
https://r-stahl.com/en/global/support/downloads/.

Explanation of the Symbols
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Electronic relay module
Series 9174
2 Explanation of the Symbols
2.1 Symbols in this Manual
2.2 Symbols on the Device
Symbol Meaning
Tip for making work easier
DANGER! Dangerous situation which can result in fatal or severe injuries
causing permanent damage if the safety measures are not
complied with.
WARNING! Dangerous situation which can result in severe injuries if the
safety measures are not complied with.
CAUTION! Dangerous situation which can result in minor injuries if the
safety measures are not complied with.
NOTICE! Dangerous situation which can result in material damage if the
safety measures are not complied with.
Symbol Meaning
05594E00
CE marking according to the current applicable directive.
02198E00
Device certified for hazardous areas according to the marking.
15649E00
Input
15648E00
Output
11048E00
Safety notes that must always be observed:
The corresponding data and/or safety-related instructions
contained in the manual must be followed for devices with this
symbol!
20690E00
Marking according to the WEEE directive 2012/19/EU

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Safety
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Electronic relay module
Series 9174
3 Safety
The device has been manufactured according to the state of the art of technology while
observing recognised safety-related rules. When using the device, it is nevertheless possible
for hazards to occur to the life and limb of the user or third parties or for the device,
environment or material assets to be compromised.
Use the device only:
- if it is not damaged
- as intended, while remaining aware of safety and dangers
- while taking this manual into account
3.1 Intended Use
The 9174 electronic relay module is an automation solution for hazardous areas of Zone 1,
2 and 22 and safe areas. The device is intended for installation in areas with a degree of
pollution of 1 or 2.
The relay module uses an intrinsically safe activation signal to switch a resistive,
capacitive or inductive Ex e load. It is an optional addition to the intrinsically safe digital
outputs, e.g. for a remote I/O module. The relay module is not suited for switching loads with
very high start-up currents, such as incandescent lamps.
"Intended use" includes complying with this manual, the operating instructions and the other
applicable documents, e.g. the data sheet.
Any other use of the device is not intended.
3.2 Personnel Qualification
Qualified specialist personnel are required to perform the tasks described in this manual.
This primarily applies to work in the following areas:
• Product selection, project engineering
• Mounting/dismounting the device
• Installation
• Commissioning
• Maintenance, repair, cleaning
Specialists who perform these tasks must have a level of knowledge that meets applicable
national standards and regulations.
Additional knowledge is required for tasks in hazardous areas! R. STAHL recommends
having a level of knowledge equal to that described in the following standards:
•IEC/EN 60079-14 (Electrical installations design, selection and erection)
•IEC/EN 60079-17 (Inspection and maintenance of electrical installations)
•IEC/EN 60079-19 (Equipment repair, overhaul and reclamation)

Safety
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Electronic relay module
Series 9174
3.3 Residual Risks
3.3.1 Explosion Hazard
Despite the device's state-of-the-art design, explosion hazards cannot be entirely eliminated
in hazardous areas.
Perform all work steps in hazardous areas with the utmost care at all times!
Transport, store, plan, mount and operate the device in compliance with the technical data
exclusively (see the "Technical data" chapter).
Possible hazards (residual risks) can be categorised according to the following causes:
Mechanical damage
The device can be damaged during transport, mounting or commissioning.
This kind of damage can, for example, render the device's explosion protection partially or
fully ineffective. This may result in explosions causing serious or even fatal injury to persons
in the vicinity.
Only transport the device in special transport packaging that reliably protects the device
from external influences. Observe the ambient conditions when selecting the transport
packaging (see the "Technical data" chapter).
Do not place any load on the device.
Check the packaging and the device for damage. Report any damage to R. STAHL
immediately. Do not commission a damaged device.
Store the device in its original packaging in a dry place (with no condensation),
and make sure that it is stable and protected against the effects of vibrations and knocks.
Do not damage the device and other system components during mounting.
Excessive heating or electrostatic charge
An incorrect setup in the cabinet, operation outside of approved conditions or improper
cleaning can cause the device to heat up severely or to become electrostatically charged,
causing it to produce sparks. This may result in explosions causing serious or even fatal
injury to persons in the vicinity.
Operate the device only within the prescribed operating conditions
(see the marking on the device and the "Technical data" chapter).
Only line up or combine devices using the stipulated procedure.
Install and set up the cabinet in such a way that all devices installed within it are always
operated within the permissible temperature range (see cabinet installation guide).
Clean the device only with a damp cloth.

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Transport and Storage
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Electronic relay module
Series 9174
Improper mounting, installation, commissioning, maintenance or cleaning
Basic work such as installation, commissioning, maintenance or cleaning of the device
must be performed only in accordance with the valid national regulations of the country of
use and only by qualified persons. Otherwise the explosion protection can be rendered
ineffective. This may result in explosions causing serious or even fatal injury to persons in the
vicinity.
Have mounting, installation, commissioning and maintenance work performed only by
qualified and authorised persons (see Chapter 3.2).
Prior to commissioning, check the mounting for correctness (see Chapter 7).
Only mount the device on the NS 35/15 or NS 35/7.5 DIN rail in accordance with
IEC/EN 60715.
Only operate the device if the required specification is met
(see the "Technical data" chapter).
When used in Zone 1 or Zone 2, the device is to be installed in a protective enclosure or
in a cabinet in accordance with IEC/EN 60079-7. This enclosure has a suitable degree of
protection (at least IP54).
For use in Zone 1 on the field enclosure, affix an information plate
(in accordance with IEC/EN 60079-7): "Caution - Non-intrinsically safe circuits protected
by internal IP 30 cover".
When used in Zone 22 and in a safe area, the device is to be installed in a protective
enclosure or in a cabinet in accordance with IEC/EN 60079-31. This enclosure has a
suitable degree of protection (at least IP54).
Before disconnecting or connecting an Ex e field circuit, de-energise it.
Do not change or retrofit the device.
Gently clean the device only with a damp cloth and without scratching, abrasive or
aggressive cleaning agents or solutions.
Electrical circuits with the "Ex i" type of protection can no longer be operated as circuits
with this protection type after being operated with circuits with other types of protection.
4 Transport and Storage
Transport and store the device carefully and in accordance with the safety notes
(see Chapter "Safety").

Product Selection and Project Engineering
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Electronic relay module
Series 9174
5 Product Selection and Project Engineering
Maximum inductance of an ohmic circuit (conductor inductance)
Design the inductance of the conductor when switching ohmic loads as follows based on
the switching current:
Typical values: 0.6 mH/km. Ask the cable manufacturer for the exact specification.
Maximum capacitance of a resistive circuit (conductor capacitance)
The maximum capacitance of the conductor is limited to 220 nF. This results in a typical
conductor length of 1 km.
DANGER! Explosion hazard during operation without a back-up fuse!
Non-compliance may result in serious or even fatal injury.
Only plan and operate the device if the required specification is met
(see the "Technical data" chapter).
When using the 8560/51-4242 Ex e fuse, do not exceed a short-circuit current
of 80 A.
Use one fuse for each device.
DANGER! Explosion hazard due to modules overheating!
Non-compliance may result in serious or even fatal injury.
Ensure compliance with the maximum switching frequency,
maximum capacitance, maximum inductance and characteristic of the connected
binary output (see following tables and chapter "Technical Data").
Maximum switching current [A] Maximum inductance of the conductor
2200 μH
1800 μH
0.5 3 mH
Additional circuitry with a freewheeling diode is recommended. R. STAHL offers
compatiable accessories from Series 8453 (e.g. 145169 article number,
SB 550 encapsulated diode for installation in Zone 1 or 2).

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Product Selection and Project Engineering
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Electronic relay module
Series 9174
Maximum switching frequency based on the inductive load
Select the maximum switching frequencies based on the inductive or capacitive load.
Maximum switching frequency based on the capacitive load
Inductive load [H] Max. switching current
0.5 A 1 A 2 A
Switching frequency
[Hz]
Switching frequency
[Hz]
Switching frequency
[Hz]
15 0.067 – –
10 0.100 – –
50.200––
3 0.333 0.083 –
2 0.500 0.125 –
1 1.000 0.250 –
0.5 2.000 0.500 –
0.4 2.500 0.625 0.125
0.2 5.000 1.250 0.250
0.1 5.000 2.500 0.500
0.05 5.000 5.000 1.000
0.02 5.000 5.000 2.500
0.01 5.000 5.000 5.000
Additional circuitry with a freewheeling diode is recommended. R. STAHL offers
compatiable accessories from Series 8453 (e.g. 145169 article number,
SB 550 encapsulated diode for installation in Zone 1 or 2).
Capacitive
load
30 μF 100 μF 470 μF 1000 μF 2000 μF 4700 μF
Switching
frequency
( 30 Hz < 10 Hz < 2 Hz < 1 Hz < 0.5 Hz < 0.2 Hz
The maximum capacitance of 4700 μF must not be exceeded.

Mounting and Installation
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Electronic relay module
Series 9174
6 Mounting and Installation
6.1 Mounting / Dismounting
Mount the device carefully and only in accordance with the safety notes
(see Chapter "Safety").
Read through the following installation conditions and assembly instructions carefully and
follow them precisely.
6.1.1 Mounting / Dismounting on Top Hat Rail
Mounting
12472E00
Position the device on the DIN rail. Mount the cut-out of the enclosure must be positioned
on the outside edge of the DIN rail.
Engage the device on the DIN rail.
When swivelling the device onto the DIN rail, make sure that it is not set at an angle.
Dismounting
12471E00
Pull out the base bolt slightly using a screwdriver.
Swivel out the device.
Only mount the device on DIN rails that correspond to IEC/EN 60715.

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Mounting and Installation
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Electronic relay module
Series 9174
6.2 Installation
6.2.1 Ex i Connection (Terminal 3, 4)
Guide the conductor all the way to the stop in the clamping unit.
Make sure that the stripped part of the wire does not extend beyond the blue terminal
enclosure.
Tighten the terminal screw counterclockwise.
Tightening torque of 0.5 to 0.6 Nm.
6.2.2 Ex e Connection (Terminal 5, 6)
Comply with stipulated stripping length (10 mm).
Guide the conductor all the way to the stop in the clamping unit.
Make sure that the stripped part of the wire does not extend beyond the green terminal
enclosure.
Lightly pull on the wires to check that they are secure.
To remove the wire, guide the screwdriver into the cut-out next to the wire and turn the
screwdriver in the direction of the wire. At the same time, lightly pull on the wire until it
disconnects from the terminal.
6.2.3 Schematic Diagrams
14838E00
Operation under difficult conditions, in particular on ships, requires additional
measures to be taken for correct installation, depending on the operating location.
Further information and instructions on this can be obtained from your regional sales
contact upon request.
DANGER! Explosion hazard due to exposed or incorrectly installed conductors
at the Ex i terminal!
Non-compliance may result in serious or even fatal injury.
Do not exceed the length to be stripped (5 to 7 mm)!
Carefully and securely attach the core end sleeve.
Insert stripped wires into the terminal entirely.
DANGER! Explosion hazard due to bounce when connecting/disconnecting
conductors at the Ex i terminal (terminal 3, 4)!
Non-compliance may result in serious or even fatal injury.
Before work on terminal 3 or 4, de-energise the Ex e electrical circuit.
Install warning labels on the wires connected to terminals 3 and 4 and in the vicinity
of the terminals for the connected device.
Ex i / I.S.Ex e Hazardous area
external PWR

Commissioning
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Electronic relay module
Series 9174
7 Commissioning
Before commissioning, carry out the following checks:
• Mounting and installation of the device according to regulations.
• Correct, secure connection of the cables.
• No damage to the device or the cables.
• The screws are securely fastened to the terminals.
Correct tightening torque: 0.5 to 0.6 Nm.
Do not commission the device until it has been successfully tested.
8 Operation
8.1 Operation
For device operation, observe the information in the "Intended Use" and
"Commissioning" chapters.
Mode of operation
An intrinsically safe digital output activates the intrinsically safe input of the relay module.
The relay module switches concurrently with the electronic Ex e output.
Since the relay module is based on an electronic switch, mechanical wear can be prevented.
The switching state is indicated by an LED.
8.2 Indications
The corresponding LEDs on the device indicate the operating state of the device
(see also the "Intended Use" and "Device Design" chapters).
8.3 Troubleshooting
If the error cannot be eliminated using the specified procedures:
Contact R. STAHL Schaltgeräte GmbH.
For rapid processing, have the following information ready:
• Type and serial number of the device
• Purchase information
• Error description
• Intended use (in particular, input and output wiring)
LED Colour LED "OFF" LED "ON"
Switching
state
Ex e output
yellow Output contact open Output contact closed
Error Cause of error Troubleshooting
The device does
not switch the load.
Despite being
activated, the yellow
LED remains off
Polarity reversed for control Check the control system for
correct polarity

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Maintenance, Overhaul, Repair
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Electronic relay module
Series 9174
9 Maintenance, Overhaul, Repair
Comply with the applicable national standards and regulations in the country of use,
e.g. IEC/EN 60079-14, IEC/EN 60079-17, IEC/EN 60079-19.
9.1 Maintenance
Check the following points in addition to the national regulations:
• Whether the clamping screws holding the electrical lines fit securely
• Whether the device enclosure and/or protective enclosure has/have cracks or other visible
signs of damage
• Whether the permissible temperatures are complied with
• Whether the parts are securely fastened
• Ensure it is being used as intended
9.2 Overhaul
Perform maintenance on the device according to the applicable national regulations and
the safety notes in this manual ("Safety" chapter).
9.3 Repair
Repair work on the device must be performed only by R. STAHL.
10 Returning the Device
Only return or package the devices after consulting R. STAHL!
Contact the responsible representative from R. STAHL.
R. STAHL's customer service is available to handle returns if repair or service is required.
Contact customer service personally.
or
Go to the r-stahl.com website.
Under "Support" > "RMA", select "RMA -REQUEST".
Fill out the form and send it.
You will automatically receive an RMA form via email. Please print this file off.
Send the device along with the RMA form in the packaging to
R. STAHL Schaltgeräte GmbH (refer to chapter 1.1 for the address).

Cleaning
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Electronic relay module
Series 9174
11 Cleaning
Check the device for damage before and after cleaning it. Take damaged devices out of
operation immediately.
To avoid electrostatic charging, the devices located in hazardous areas may only be
cleaned using a damp cloth.
When cleaning with a damp cloth, use water or mild, non-abrasive, non-scratching
cleaning agents.
Do not use corrosive cleaning agents or solvents.
12 Disposal
Observe national and local regulations and statutory regulations regarding disposal.
Separate materials when sending them for recycling.
Ensure environmentally friendly disposal of all components according to the statutory
regulations.
13 Accessories and Spare Parts
NOTICE! Malfunction or damage to the device due to the use of non-original components.
Non-compliance can result in material damage.
Use only original accessories and spare parts from R. STAHL Schaltgeräte GmbH
(see data sheet).

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Annex A
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Electronic relay module
Series 9174
14 Annex A
14.1 Technical Data
Explosion Protection
Global (IECEx)
Gas and dust IECEx BVS 17.0050X
Ex eb mb [ib Gb] IIC T4 Gb
[Ex ib Db] IIIC
Europe (ATEX)
Gas and dust BVS 17 ATEX E 057 X
E II 2 G Ex eb mb [ib Gb] IIC T4 Gb
E II (2) D [Ex ib Db] IIIC
Certifications and certificates
Certificates IECEx, ATEX
Safety data
Max. voltage Ui28 V
Max. current Li150 mA
Max. power Pi780 mW
Internal
capacitance Ci
1.2 nF
Internal inductance Linegligible
Safety-related
maximum voltage
253 V
Nominal current
Device 2 A
Note See chapter 5 in the manual for additional specifications
Back-up fuse
Rated
operational
current
3.15 A
Breaking
capacity
> 1500 A at 250 V
Recommended
type (Zone 1)
8560/51-4242
Recommended
type (non-Ex)
Littelfuse 215 series T3, 15 A

Annex A
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Electronic relay module
Series 9174
Technical Data
Electrical data
Galvanic separation
acc. to standard EN 60079-11
Input to output 1500 V AC
Auxiliary power none
Max. power
dissipation
1.42 W
Ex i input
Switching level
for ON / OFF
ON 14 to 28 V
Note Switching level = output voltage of binary output - internal resistance of binary
output x 15 mA ≥ 14 V
OFF 0 to 5 V
Input current
for ON
> 15 mA
Rise time
output current DO
for 15 mA
( 2.5 ms
Input current
for OFF
< 2 mA
Ex e output
Max. voltage 31.2 V DC
Max. current 2 A
Reverse polarity
protection
yes
Voltage drop < 0.5 V
Max. leakage
current
0.25 mA
Max. switching
frequency
Duty factor 30 to 70 %
Resistive load 30 Hz
Capacitive load See chapter 5 in the manual
Inductive load See chapter 5 in the manual
Note Please observe the specifications in chapter 5 in the manual
Electromagnetic
compatibility
Tested to the following standards and regulations:
EN 61326-1 Use in industrial environment;
NAMUR NE 21

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Annex A
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Series 9174
For further technical data, see r-stahl.com.
Ambient conditions
Ambient temperature -20 to +65 °C
Storage temperature -40 to +80 °C
Maximum relative
humidity
( 95 %
Use at the height of < 2000 m
Mechanical data
Ex i connection
Version screw terminal
Terminals 2 terminals (cage terminals)
each max. 1.5 mm2 stranded / solid wire
Ex e connection
Version spring clamp terminal
Connection
single-wire
Rigid 0.2 to 4 mm2
Flexible 0.2 to 2.5 mm2
Flexible with
core end sleeve
0.25 to 1.5 mm2
Mounting type on DIN rail (NS35/15, NS35/7.5)
Mounting orientation horizontal or vertical
Degree of protection
Enclosure IP40
Terminals 3,4
(Ex i)
IP20
Terminals 5,6
(Ex e)
IP30
Enclosure material polyamide 6GF
Technical Data

Annex B
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Electronic relay module
Series 9174
15 Annex B
15.1 Device Design
15.2 Dimensions / Fastening Dimensions
#Device component Description
19630E00
1 Screw terminal Non-functional
2 Blue terminals 3, 4 Ex i connection terminals for
connecting the intrinsically safe
control system
3 Yellow LED Indication of the switching state
4 Black terminals 5, 6 Ex e connection terminals for
connecting the load to be switched
5 Screw terminal Non-functional
Dimensional drawings (all dimensions in mm [inches]) – Subject to modification
14836E00
1
3
2
4
5
36 [1,41] 65,5 [2,58]
101,5 [4,00]
79 [3,11]
12,5 [0,49]