R. STAHL Schaltgeräte GmbH
Betriebsanleitung / Operating Instruction
/ Инструкция по эксплуатации
282458 / 917460310040
2020-11-03·BA00·III·de/en/ru·00
3.1 Intended use
The electronic relay module type 9174 is an automation solution for hazardous areas in
Zones 1, 2, 21 and 22, as well as in safe areas. It enables galvanically separated switching of
(non-Ex i) electrical circuits up to 253 V AC at a maximum load current of 5 A. It can be
controlled by either Ex i or non-Ex i electrical circuits. Switching from non-Ex i to Ex i electrical
circuits or vice versa is also possible at the input at any time and without restrictions.
The integrated safeguarding in the input and output circuit means that additional safeguarding
is not required.
The device is intended for installation in areas with a degree of pollution of 1 or 2.
The rated insulation voltage between the coils and the contact electrical circuit is 375 V peak
and 253 V AC.
"Intended use" includes complying with these operating instructions and the other applicable
documents, e.g. the data sheet. All other uses of the device
are not considered to be intended use.
Safety data and ambient conditions can be found on the side of the device and in the data
sheet.
3.2 Personnel qualification
Qualified specialist personnel are required to perform the tasks described in this document.
This is especially important for 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 activities in hazardous areas!
R. STAHL recommends having a level of knowledge equal to that described in the following
standards:
-
IEC/EN 60079-14 (Project engineering, selection and construction of electrical systems)
-
IEC/EN 60079-17 (Inspection and maintenance of electrical systems)
-
IEC/EN 60079-19 (Device repair, overhaul and reclamation)
3.3 Residual risks
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, engineer, mount and operate the device exclusively in compliance with
the technical data (see data sheet).
Possible hazards ("residual risks") can be categorised according to the following causes:
Mechanical damage
The device can become damaged during transport, mounting or commissioning. This kind of
damage can, for example, render the device's explosion protection partially or completely
ineffective. This may result in explosions causing serious or even fatal injury to persons.
-
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 data sheet).
-
Do not transport or store the device in an aggressive atmosphere or in saline air.
-
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.
-
Operate the device within the prescribed operating conditions only (see the label on the
device and data sheet).
-
Install and set up the cabinet in such a way that all devices installed within it are always
operated within their permissible temperature range.
-
Clean the device with a damp cloth only.
Ignition sparks
Ignition sparks can be generated during live working, when working with screws or routing
connections on a device that has not been fitted according to regulations. This may result in
explosions causing serious or even fatal injury to persons.
-
Before disconnecting or connecting a non-Ex i field circuit, de-energise it.
-
Carry out all screw fastening processes carefully using the respectively specified
tightening torques.
Improper project engineering, mounting, installation, commissioning, maintenance or
cleaning
-
Have mounting, installation, commissioning and maintenance performed only by qualified
and authorised persons and have acceptance carried out by a test body (3rd party
inspection).
-
Operate the device only within the prescribed operating conditions (see the type plate and
data sheet).
-
For use in Zone 1 or Zone 2, install the device in an enclosure with a recognised type of
protection according to IEC/EN 60079-0 and an IP degree of protection of at least IP54
according to IEC/EN 60529.
-
For use in Zone 21 or Zone 22, install the device in an enclosure according to IEC/EN
60079-31 and an IP degree of protection of at least IP64 according to IEC/EN 60529.
-
Install and set up the cabinet in such a way that it is always operated within the
permissible temperature range.
-
Note the cable cross-section at terminal X1 and X2.
-
Note the maximum switching current depending on the ambient temperature (see
"Maximum permissible ambient temperature" chapter).
-
During installation and operation, observe the information on the rating plates as well as
the information plates located on the device.
-
Only mount the device on the NS 35/15 or NS 35/7.5 DIN rail in accordance with IEC/EN
60715.
-
Attach a suitable IP30 cover to terminal X1 if the same enclosure contains Ex i electrical
circuits.
-
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"..
-
Before disconnecting or connecting a non-Ex i field circuit, de-energise it.
-
Maintain a distance of at least 50 mm for intrinsically safe and non-intrinsically safe
electrical circuits.
-
If the device is damaged, do not commission it. Return it to R. STAHL.
-
Do not change or modify the device.
-
Clean the device with a damp cloth only.
4 Transport and storage
Transport and store the device carefully and in accordance with the safety notes (see "Safety"
chapter).
5 Project engineering
DANGER!
Explosion hazard due to impermissible heating!
Non-compliance may result in serious or even fatal injuries.
-
Note the sequence of devices, see "Maximum permissible ambient temperature" chapter.
Engineer the device carefully and in accordance with the safety notes (see "Safety" chapter).
Electrical circuits with Ex i and non-Ex i type of protection may be connected to the
connections on input X1. After later modification, the Ex i electrical circuits may continue to be
operated using the connections that were previously used with non-Ex i electrical circuits.
Further explosion protection markings depend on the application.
X1
Input
electrical
circuit
X2
Output
electrical
circuit
Explosion protection marking
TÜV 20 ATEX 8551 X
IECEx TUR 20.0035X
Non-Ex i
Non-Ex i
e
II 2 G
Ex eb mb IIC T4 Gb
Ex ia
Non-Ex i
e
II 2 (1) G
Ex eb mb [ia Ga] IIC T4 Gb
e
II (1) D
[Ex ia Da] IIIC
Ex ib
Non-Ex i
e
II 2 (2) G
Ex eb mb [ib Gb] IIC T4 Gb
e
II (2) D
[Ex ib Db] IIIC
5.1 Maximum permissible ambient temperature
The maximum ambient temperature T
a
can be determined based on the maximum output
current I
n
and installation.
Mounting on a DIN rail with no distance to other devices
Output current I
n
Ambient temperature T
a
I
n
≤ 1 A AC
T
a
= -40 °C to +75 °C
Mounting on a DIN rail with a distance of 12 mm to other
devices
(spacer included in delivery 165283)
Output current I
n
Ambient temperature T
a
I
n
≤ 2 A AC
T
a
= -40 °C to +75 °C
I
n
≤ 3 A AC
T
a
= -40 °C to +60 °C
I
n
≤ 4 A AC
T
a
= -40 °C to +45 °C
I
n
≤ 5 A AC
T
a
= -40 °C to +30 °C
6 Mounting and installation
DANGER!
Explosion hazard due to impermissible heating!
Non-compliance may result in serious or even fatal injuries.
-
Note the sequence of devices, see "Maximum permissible ambient temperature" chapter.
DANGER!
Risk of explosion due to exposed or incorrectly installed electrical lines at
terminals!
Non-compliance may result in serious or even fatal injuries.
-
Comply with the stipulated stripping length of 10 mm!
-
Carefully and securely attach the core end sleeve.
-
Insert stripped wires into the terminal entirely.
6.1 Mounting/dismounting on/from BusRail (DIN mounting rail)
Only mount the device on DIN rails that correspond to IEC/EN 60715.
Mounting as required on horizontal or vertical DIN rail.
12472E00
Position the device on the DIN rail. 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.
12471E00
Pull out the base bolt slightly using a screwdriver.
Swivel out the device.
6.2 Installation
NOTE:
The connection diagram is depicted on the side of the enclosure.
Connection terminal X1 (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 terminal housing.
Tighten the screw of the terminal. Tightening torque of the screw: 0.5 to 0.6 Nm.
If necessary, attach a suitable IP30 covering on terminal X1 (see "Safety" chapter).
Connection terminal X2 (5, 6)
Comply with the stipulated stripping length of 10 mm.
Insert 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 terminal housing.
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.
7 Commissioning
Before commissioning, carry out the following checks:
-
Compliance with operating data according to technical data
-
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. Tightening torque: 0.5 to 0.6 Nm.
Do not commission the device until it has been successfully tested.
