Pepperl Fuchs K-System User manual
ISO9001
K-System
Isolated Barriers
Manual
With regard to the supply of products, the current issue of the following document is applicable:
The General Terms of Delivery for Products and Services of the Electrical Industry, published by the Central
Association of the Electrical Industry (Zentralverband Elektrotechnik und Elektroindustrie (ZVEI) e.V.) in its most
recent version as well as the supplementary clause: "Expanded reservation of proprietorship"
Worldwide
Pepperl+Fuchs Group
Lilienthalstr. 200
68307 Mannheim
Germany
Phone: +49 621 776 - 0
E-mail: info@de.pepperl-fuchs.com
North American Headquarters
Pepperl+Fuchs Inc.
1600 Enterprise Parkway
Twinsburg, Ohio 44087
USA
Phone: +1 330 425-3555
E-mail: sales@us.pepperl-fuchs.com
Asia Headquarters
Pepperl+Fuchs Pte. Ltd.
P+F Building
18 Ayer Rajah Crescent
Singapore 139942
Phone: +65 6779-9091
E-mail: sales@sg.pepperl-fuchs.com
https://www.pepperl-fuchs.com
K-System – Isolated Barriers
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Content of this Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Target Group, Personnel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Housing Styles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.4 Color Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.5 Status Indicators of the Isolators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.6 Operating Elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.7 Label Carrier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.8 DIN Mounting Rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.9 Power Rail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3 Mounting and Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.1 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.1 Fault Monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.2 Fault Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.3 Current and Voltage Standard Signals . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6 Dismounting, Maintenance, and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.1 Dismounting the Isolated Barrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.2 Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7.3 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
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K-System – Isolated Barriers
Contents
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K-System – Isolated Barriers
Introduction
1 Introduction
1.1 Content of this Document
This document contains information that you need in order to use your product throughout
the applicable stages of the product life cycle. These can include the following:
• Product identification
• Delivery, transport, and storage
• Mounting and installation
• Commissioning and operation
• Maintenance and repair
• Troubleshooting
• Dismounting
• Disposal
Note
This document does not substitute the instruction manual.
Note
For full information on the product, refer to the instruction manual and further documentation
on the Internet at www.pepperl-fuchs.com.
The documentation consists of the following parts:
• Present document
• Instruction manual
• Datasheet
Additionally, the following parts may belong to the documentation, if applicable:
• EU-type examination certificate
• EU declaration of conformity
• Attestation of conformity
• Certificates
• Control drawings
• Additional documents
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K-System – Isolated Barriers
Introduction
1.2 Target Group, Personnel
Responsibility for planning, assembly, commissioning, operation, maintenance,
and dismounting lies with the plant operator.
Only appropriately trained and qualified personnel may carry out mounting, installation,
commissioning, operation, maintenance, and dismounting of the product. The personnel
must have read and understood the instruction manual and the further documentation.
Prior to using the product make yourself familiar with it. Read the document carefully.
1.3 Symbols Used
This document contains symbols for the identification of warning messages and of informative
messages.
Warning Messages
You will find warning messages, whenever dangers may arise from your actions.
It is mandatory that you observe these warning messages for your personal safety and in order
to avoid property damage.
Depending on the risk level, the warning messages are displayed in descending order
as follows:
Danger!
This symbol indicates an imminent danger.
Non-observance will result in personal injury or death.
Warning!
This symbol indicates a possible fault or danger.
Non-observance may cause personal injury or serious property damage.
Caution!
This symbol indicates a possible fault.
Non-observance could interrupt the device and any connected systems and plants,
or result in their complete failure.
Informative Symbols
Note
This symbol brings important information to your attention.
Action
This symbol indicates a paragraph with instructions. You are prompted to perform an action
or a sequence of actions.
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K-System – Isolated Barriers
Control
system
Sensor
Actuator
Product Specifications
2 Product Specifications
2.1 Function
Isolated barriers are isolators used for protection of intrinsically safe circuits in hazardous
areas. In addition to the required current, voltage and power limitation, the isolated barriers
have a galvanic isolation between the field circuit and the controller.
Figure 2.1 Function – isolating, amplifying and transforming signals
The K-System consists of wide range of isolated barriers suitable for mounting on 35 mm
DIN mounting rail. K-System is easy to specify, integrate and expand. Our extensive line of
intrinsic safe isolators for hazardous location applications contains over 150 different devices.
Figure 2.2 K-System on Power Rail
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K-System – Isolated Barriers
Product Specifications
2.2 Housing Styles
Depending on the functionality and application, K-System devices have 3 different housing
widths:
• KC devices with 12.5 mm width
• KF devices with 20 mm width
• KF devices or KH devices with 40 mm width
The 3 housing widths versions have the same system characteristics. All devices
can be mounted on the 35 mm DIN mounting rail or the Power Rail. See chapter 2.9
KC Device Housing
3
KCD2-SREx1.LB
PWR
OUT/CHK
1
2
S
3
4
241
I
II
Figure 2.3 KC device housing (12.5 mm)
Used for high signal integrity
• Compact 12.5 mm housing
• High packing density with single loop integrity
675
8
9
10
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K-System – Isolated Barriers
Product Specifications
KF Device Housing
3
1
2
5
6
4
KFD2-ER-Ex1.W.LB
OUT CHK PWR
sens.
9107
8
12
11
13 15
14
Figure 2.4 KF device housing (20 mm)
Used for high channel density
• Compact 20 mm housing
• Packing density from 5 mm per channel
132465
KFD2-WAC2Ex1.D
PWR
FLT
12
OUT
11
17
22 24
23
ESC
OK
121610
18
RS232
8
14
19 21
20
9137
15
Figure 2.5 KF device housing (40 mm)
Used for applications with high functionality
• Digital devices monitor speed, direction of rotation, slip, flow rates and time.
• Analog devices monitor transmitter signals, temperature signals and load cells.
TM
• Configured using keypad or PACTware
software, see also manual "Installation
and Configuration Device Type Manager (DTM)"
• AC/DC wide range supply available
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K-System – Isolated Barriers
Product Specifications
KH Device Housing
Figure 2.6 KH device housing (40 mm)
123
789
KHA6-SHEx1
1
CHKPWROUT
13 14 15
19 20 21
456
10 11 12
S
16 17 18
22 23 24
10
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K-System – Isolated Barriers
12
9
10
7118
1
3
4
6
2
5
12
9
10
7118
1
3
4
6
2
5
12
9
10
7118
1
3
4
6
2
5
1 2 3
Product Specifications
2.3 Terminals
2.3.1 Removable Terminal Blocks
The removable terminal blocks simplify connection and control cabinet assembly.
The terminal blocks offer space for the connection of leads with core cross-sections
of up to 2.5 mm
so misconnection of terminal blocks are eliminated.
Observe the tightening torque of the terminal screws. The tightening torque
is 0.5 Nm to 0.6 Nm.
The 20 mm and 40 mm wide KF devices are factory-equipped with screw terminals.
The KC devices are available with screw terminals or spring terminals. The order designation
of the versions of the KC devices with spring terminals has the extension ".SP".
As an alternative to the factory-equipped terminal blocks the devices can be used
with other terminal blocks:
• Terminal blocks with screw terminals
• Terminal blocks with screw terminals and test plug socket
• Terminal blocks with spring terminals and test plug socket
These terminal blocks are available as accessories. The terminal blocks can be easily coded
with KF-CP coding pins (available optionally).
2
(14 AWG). The terminal blocks are coded with red coding pins
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Figure 2.7 K-System removable terminal blocks
1 Terminal blocks with screw terminals
2 Terminal blocks with screw terminals and test sockets
3 Terminal blocks with spring terminals and test sockets
11
K-System – Isolated Barriers
Product Specifications
Protection against direct contact
The removable terminal blocks have different heights:
• Height 15 mm (1), (2), (3): These terminal blocks are used in applications that have rated
voltages lower than 50 V AC. The insulation of the removable terminal blocks provides
protection against direct contact. The insulation corresponds to a reinforced insulation
according to EN 61010-1 for a rated insulation voltage of 50 V AC.
• Height 15.5 mm (4), (5): These terminal blocks are used in applications that have rated
voltages higher than 50 V AC. The insulation of the removable terminal blocks provides
protection against direct contact. The insulation corresponds to a basic insulation
according to EN 61010-1 for a rated insulation voltage of 300 V AC. The higher terminals
are marked (X).
1 52 3 4
15.115.115.1
15
Figure 2.8 Removable terminal blocks with different heights
15.110.1
15.5
X
1 Terminal block with screw terminals, height 15 mm
2 Terminal block with screw terminals and test sockets, height 15 mm
3 Terminal block with spring terminals and test sockets, height 15 mm
4 Terminal block with screw terminals and test sockets, height 15.5 mm
5 Terminal block with screw terminals, height 15.5 mm
X Marking
Note
See corresponding datasheets for further information.
12
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K-System – Isolated Barriers
9
10
8
675
241
3
3 4
1 2
7 8
5 6
9 10
1
3
4
6
2
5
13 15
12
9107
14
11
8
4 5 6
1 2 3
7 8 9
10 11 12
13 14 15
Product Specifications
2.3.2 Terminal Designation
Note
See corresponding datasheets for precise terminal designation.
Figure 2.9 KC device housing (12.5 mm)
Figure 2.10 KF device housing (20 mm)
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K-System – Isolated Barriers
Product Specifications
Figure 2.11 KF device housing (40 mm)
132465
9137
8
15
14
19 21
20
11
17
22 24
23
1 2 3
4 5 6
121610
18
7 8 9
10 11 12
13 14 15
16 17 18
19 20 21
22 23 24
Figure 2.12 KH device housing (40 mm)
123
789
13 14 15
19 20 21
456
10 11 12
16 17 18
22 23 24
14
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K-System – Isolated Barriers
ESC
OK
KFU8-UFTEx2.D
RS232
PWR1
12
3
2
4
IN/
CHK
OUT
19 21
15
9137
20
14
8
22 24
18
121610
23
17
11
132465
KFD2-ER-Ex1.W.LB
1
3
4
6
2
5
13 15
12
9107
14
11
8
OUT CHK PWR
sens.
KFA5-ER-Ex1.W.LB
1
3
4
6
2
5
13 15
12
9107
14
11
8
OUT CHK PWR
sens.
21 3
4
Product Specifications
2.4 Color Identification
The color identification of the devices has the following meaning:
• Green (1) indicates devices with DC power supply.
• Black (2) indicates devices with AC power supply.
• Gray (3) indicates devices with AC/DC wide range supply.
• Blue (4) indicates devices that process signals from the hazardous area.
Figure 2.13 Color identification of devices
1 green
2 black
3 gray
4 blue
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K-System – Isolated Barriers
OUT CHK PWR
1 2 3
Product Specifications
2.5 Status Indicators of the Isolators
LEDs are often used on isolators to indicate different statuses (e. g. for power supply,
device failure, status messages, binary switching states). Standard LED colors are assigned
to the status display according to NAMUR NE44.
LED Display function Display Meaning
Green LED Power supply On Power supply OK
Off No power supply or insufficient power supply – device
faulty
Red LED Device fault, device
failure
Line fault Flashing External fault signal, failure signal – fault/failure display
No fault Off No malfunction, device is operating properly
Yellow LED Switching states of
binary inputs and
outputs
On Internal fault signal, failure signal – fault/failure display
of causes detected inside the device, device needs
replacing
of causes detected outside the device, inspection
and elimination of fault required
On Possible causes of the output:
• The relay is energized.
• The NO contact (also a change-over contact)
is actively closed.
• The open collector is switched through.
• The switching voltage generated inside the device
is applied.
Possible causes of the input:
• A binary switching signal is present.
• An analog limit value is reached.
Off Possible causes of the output:
• The relay is de-energized.
• The NO contact (also a change-over contact)
is actively opened.
• The open collector is not switched through.
• The switching voltage generated inside the device
is not applied.
Possible causes of the input:
• A binary switching signal is present.
• An analog limit value is reached.
Table 2.1 Meaning of status indicators
16
Figure 2.14 Example status indicators
1 Yellow LED "OUT"
Switching state of the output
2 Red LED "CHK"
Lead breakage and short circuit status indicator
3 Green LED "PWR"
Power supply status indicator
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