Instruction Manual
1. Marking
Switch Amplifier
KFU8-SR-Ex1.W, KFU8-SR-Ex1.W.LB, KFU8-SR-Ex2.W
ATEX cetificate: FIDI 22 ATEX 0029 X
ATEX marking:
1 II 3(1)G Ex ec nC [ia Ga] IIC T4 Gc
1 II (1)D [Ex ia Da] IIIC
1 I (M1) [Ex ia Ma] I
IECEx certificate: IECEx FIDI 22.0003X
IECEx marking:
Ex ec nC [ia Ga] IIC T4 Gc , [Ex ia Da] IIIC , [Ex ia Ma] I
North America Certifcates: E106378 (UL)
Class I, Division 2, Groups A-D, T4
Class I, Zone 2, Group IIC T4
Associated apparatus with intrinsically safe circuits for:
Class I, Division 1, Groups A-D; Class II, Division 1, Groups E-G;
Class III
[AEx ia Ga] IIC, [AEx ia Da] IIIC, [Ex ia Ga] IIC, [Ex ia Da] IIIC
Pepperl+Fuchs Group
Lilienthalstraße 200, 68307 Mannheim, Germany
Internet: www.pepperl-fuchs.com
2. Target Group, Personnel
Responsibility for planning, assembly, commissioning, operation,
maintenance, and dismounting lies with the plant operator.
The personnel must be appropriately trained and qualified in order to carry
out mounting, installation, commissioning, operation, maintenance, and
dismounting of the device. The trained and qualified personnel must have
read and understood the instruction manual.
Prior to using the product make yourself familiar with it. Read the
instruction manual carefully.
3. Reference to Further Documentation
Observe laws, standards, and directives applicable to the intended use
and the operating location.
For mining applications, observe laws, standards, and directives
applicable to the operating location.
The corresponding datasheets, manuals, declarations of conformity, EU-
type examination certificates, certificates, and control drawings if
applicable supplement this document. You can find this information under
www.pepperl-fuchs.com.
For specific device information such as the year of construction,
scan the QR code on the device. As an alternative, enter the serial number
in the serial number search at www.pepperl-fuchs.com.
If you use the device in safety-related applications, observe the
requirements for functional safety. You can find these requirements in the
functional safety documentation under www.pepperl-fuchs.com.
4. Intended Use
The device is only approved for appropriate and intended use. Ignoring
these instructions will void any warranty and absolve the manufacturer
from any liability.
The device is used in control and instrumentation technology
(C&I technology) for the galvanic isolation of signals such as 20 mA and
10 V standard signals or alternatively for adapting or standardizing signals.
The device has intrinsically safe circuits that are used for operating
intrinsically safe field devices in hazardous areas.
The device transfers digital signals
(NAMUR sensors/mechanical contacts) from the explosion-
hazardous area to the non-explosion-hazardous area.
Use the device only within the specified ambient and operating conditions.
Only use the device stationary.
The device is an associated apparatus according to IEC/EN 60079-11.
The device is an electrical apparatus for hazardous areas of Zone 2.
The device may be installed in the non-hazardous area.
If you use the device in safety-related applications, observe the
information for safety function and safe state.
5. Improper Use
Protection of the personnel and the plant is not ensured if the device is not
used according to its intended use.
If circuits with type of protection Ex i are operated with non-intrinsically
safe circuits, they must no longer be used as circuits with type of
protection Ex i.
6. Mounting and Installation
Do not mount a damaged or polluted device.
The device is designed for mounting on a 35 mm DIN mounting rail
according to EN 60715.
Mount the device in a surrounding enclosure which provides protection
against electrical, mechanical and fire hazards.
Ensure that the surrounding enclosure can only be opened with a tool.
The device fulfills a degree of protection IP20 according to IEC/EN 60529.
The device must be installed and operated only in a controlled
environment that ensures a pollution degree 2 (or better) according to
IEC/EN 60664-1.
If used in areas with higher pollution degree, the device needs to be
protected accordingly.
Do not mount the device in the dust hazardous area.
The device must be installed and operated only in an environment of
overvoltage category II (or better) according to IEC/EN 60664-1.
Provide a disconnecting means for the supply of the device.
Observe the installation instructions according to IEC/EN 60079-14.
If you install the device in safety-related applications, observe the
requirements for functional safety.
Requirements for Cables and Connection Lines
Observe the permissible core cross section of the conductor.
When using stranded conductors, crimp wire end ferrules on the
conductor ends.
Use only copper conductors.
Use only one conductor per terminal.
When installing the conductors the insulation must reach up to the
terminal.
If the voltage is greater than 50 V AC or 120 V DC, switch off the voltage
before connecting or disconnecting the device.
Observe the tightening torque of the terminal screws.
Use conductors rated for a temperature of at least 80 °C.
Only use cables and connection lines with a temperature range
appropriate to the application.
Requirements for Usage as Associated Apparatus
If circuits with type of protection Ex i are operated with non-intrinsically
safe circuits, they must no longer be used as circuits with type of
protection Ex i.
Observe the respective peak values of the field device and the associated
apparatus with regard to explosion protection when connecting intrinsically
safe field devices with intrinsically safe circuits of associated apparatus
(verification of intrinsic safety). Also observe IEC/EN 60079-14 and
IEC/EN 60079-25.
Intrinsically safe circuits of associated apparatus can be led into
hazardous areas. Observe the compliance of the separation distances to
all non-intrinsically safe circuits according to IEC/EN 60079-14.
Observe the compliance of the separation distances between two
adjacent intrinsically safe circuits according to IEC/EN 60079-14.
Requirements for Equipment Protection Level Gc
The device must be installed and operated only in surrounding enclosures
that
lcomply with the requirements for surrounding enclosures according to
IEC/EN 60079-0,
lare rated with the degree of protection IP54 according to
IEC/EN 60529.
Connection or disconnection of energized non-intrinsically safe circuits is
only permitted in the absence of a potentially explosive atmosphere.
7. Operation, Maintenance, Repair
If you operate the device in safety-related applications, observe the
requirements for functional safety. In case of operating in low demand
mode, plan appropriate intervals for the proof test.
If the voltage is greater than 50 V AC or 120 V DC, switch off the voltage
before connecting or disconnecting the device.
Do not use a damaged or polluted device.
Do not repair, modify, or manipulate the device.
If there is a defect, always replace the device with an original device.
Requirements for Equipment Protection Level Gc
Connection or disconnection of energized non-intrinsically safe circuits is
only permitted in the absence of a potentially explosive atmosphere.
Only use operating elements in the absence of a potentially explosive
atmosphere.
8. Delivery, Transport, Disposal
Check the packaging and contents for damage.
Check if you have received every item and if the items received are the
ones you ordered.
Always store and transport the device in the original packaging.
Store the device in a clean and dry environment. The permitted ambient
conditions must be considered, see datasheet.
DOCT-8354 / 2022-07 1 / 2
