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Pepperl + Fuchs KFD2-ST2-EX1.LB

Name: KFD2-ST2-EX1.LB
Brand: Pepperl + Fuchs
SKU: KFD2-ST2-EX1.LB
Price: 43.69 GBP
Availability: InStock

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£43.69 (ex. VAT)

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Marvo Stock ID MV-B969

HS Code 85389091

SKU KFD2-ST2-EX1.LB

Condition Used

Warranty 12 months

Weight (kg) 1.00

Length (mm) 320.00

Width (mm) 250.00

Height (mm) 250.00

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Specification & Description

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Commonly Asked Questions

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Specification & Description

Specification	Description
Part Number	KFD2-ST2-EX1.LB
Manufacturer	Pepperl + Fuchs
Signal Type	Digital Input
Supply Connection	Power Rail or terminals 14+, 15-
Rated Voltage	20 ... 30 V DC
Ripple	≤ 10 %
Rated Current	≤ 50 mA
Input Connection	Terminals 1+, 2+, 3-
Open Circuit Voltage	Approx. 8 V DC
Short-Circuit Current	Approx. 8 mA
Switching Point/Hysteresis	1.2 ... 2.1 mA / approx. 0.2 mA
Line Fault Detection	Breakage I ≤ 0.1 mA, short-circuit I > 6 mA
Output Connection	Output I: terminals 7+; Output II: terminals 9+
Signal Level	1-signal: (L+) - 3.5 V (100 mA, short-circuit protected), 0-signal: switched off (≤ 10 µA)
Output Type	Output I: signal, electronic output, active; Output II: signal or error message, electronic output, active
Switching Frequency	≤ 5 kHz
Electrical Isolation	Input/Output: reinforced insulation according to IEC 62103, rated insulation voltage 300 Vrms
Ambient Temperature	-20 ... 60 °C
Degree of Protection	IP20
Mass	Approx. 150 g
Dimensions	20 x 119 x 115 mm
Mounting	On 35 mm DIN mounting rail according to EN 60715
EC-Type Examination Certificate	PTB 00 ATEX 2035
Group, Category, Type of Protection	¬ II (1) G [Ex ia] IIC, ¬ II (1) D [Ex ia] IIIC
Approvals	FM, CSA, IECEx

The Pepperl + Fuchs KFD2-ST2-EX1.LB is a high-performance isolated switch amplifier designed to facilitate the safe and reliable transfer of digital signals from hazardous areas to safe zones. This one-channel barrier is engineered to work with both dry contact and NAMUR sensor inputs, making it a versatile solution for a variety of industrial applications.

Equipped with an active transistor output, the KFD2-ST2-EX1.LB ensures active signal transmission to the safe area load. It also features an additional active fault output that can be utilised for enhanced monitoring and diagnostics. The device is capable of detecting line faults such as breakages or short circuits, and it provides clear indication of such faults through its LED indicators, in compliance with NAMUR NE44 standards.

The unit's mode of operation can be easily reversed, and it offers a switching frequency of up to 5 kHz, ensuring rapid signal processing for time-sensitive operations. The KFD2-ST2-EX1.LB also boasts reinforced insulation according to IEC 62103, with a rated insulation voltage of 300 Vrms, providing a robust barrier against electrical interference.

Designed for mounting on a 35 mm DIN rail, the device's compact dimensions and IP20 protection rating make it suitable for integration into a wide range of control panels and equipment housings. Its ambient operating temperature range of -20 to 60 °C ensures reliable performance even in challenging environmental conditions.

The KFD2-ST2-EX1.LB is also designed for use in conjunction with hazardous areas, holding an EC-Type Examination Certificate and conforming to the ATEX directive for intrinsic safety. This makes it an ideal choice for industries where explosive atmospheres may be present, such as in chemical processing, oil and gas, or pharmaceutical manufacturing.

Overall, the Pepperl + Fuchs KFD2-ST2-EX1.LB is a robust and reliable component for ensuring safe signal transmission in industrial environments, offering both flexibility and peace of mind for engineers and technicians.

Commonly Asked Questions

Is my order covered by a warranty?

Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.

What payment methods do you accept?

We accept card payments from all major credit, debit and Mastercard providers including Visa, American Express, Western Union, Paypal and bank transfers. Before you complete an order you will be prompted to input your payment details, at which point you can enter the relevant card information you wish to use for your transaction. If you are experiencing issues with your payment method then you can contact our team via email here. From there, you will be directed to the most relevant resource or person to help you complete your payment, get your order processed and ensure that your parts are on the way to your delivery address.

Is Marvo a credible parts supplier?

Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.

Have steps been taken to ensure quality control?

Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.

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Our service to you

Lightning-Fast Express Shipping: Receive your order in record time with our express shipping options, ensuring you minimize downtime and keep your projects on track.

No-Risk Returns, Guaranteed: Return your parts anytime for a full refund. Our hassle-free return policy ensures you’re never stuck with something you don’t need.

Clear Pricing with No Hidden Fees: What you see is what you pay, transparent pricing with no extra costs, ever. Rest assured, all taxes and fees are already included in your final price.

Rock-Solid Reliability at a Fraction of the Cost: Get pre-owned electronic parts that are fully tested for peak performance, saving you money without compromising on quality, backed by a comprehensive warranty.

Frequently Asked Questions

What type of input signals does the switch amplifier support?

The switch amplifier supports digital input signals, specifically from dry contact or NAMUR sensors, which are commonly used in hazardous areas for intrinsic safety applications.

Can the switch amplifier be installed in a Zone 2 hazardous area?

Yes, the device is suitable for installation in Zone 2 hazardous areas, providing a safe and reliable solution for signal transfer from these environments.

Is there a way to reverse the normal output state of the switch amplifier?

Indeed, the normal output state can be reversed using the switch S1 provided on the device, allowing for flexible operation according to the needs of the application.

Does the switch amplifier have line fault detection capabilities?

The switch amplifier is equipped with Line Fault Detection (LFD) which monitors the control circuits for lead breakage and short circuits, enhancing the safety and reliability of the system.

What is the function of output II on the switch amplifier?

Output II on the switch amplifier can be configured either as a signal output or as an error message output, depending on the position of switch S2, allowing for versatile signalling options.

How does the switch amplifier indicate an error condition?

In the event of an error condition, the transistors revert to their de-energized state and the fault is indicated by LEDs in accordance with NAMUR NE44 standards.

What is the significance of the Power Rail system with this switch amplifier?

The Power Rail system is used to supply power to the switch amplifier and also enables a unique collective error messaging feature, which can be transmitted to a power feed module.

What are the ambient temperature limits for operating the switch amplifier?

The switch amplifier is designed to operate within an ambient temperature range of -20 to 60°C, making it suitable for a variety of industrial environments.

What type of electrical isolation is provided by the switch amplifier?

The switch amplifier offers reinforced insulation according to IEC 62103 between the input and output, as well as between the input and power supply, with a rated insulation voltage of 300 Vrms.

Can the switch amplifier be used in applications up to SIL2 according to IEC 61508?

Yes, the switch amplifier is suitable for use in applications up to Safety Integrity Level 2 (SIL2) as per the IEC 61508 standard, which relates to the functional safety of electrical/electronic/programmable electronic safety-related systems.

Part conditions explained

We want your buying experience to be as seamless as possible. So, here are all of the product descriptions you will see when browsing Marvo, explained a little further:

New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.

New sealed: The product is sealed in its original packaging. It has never been opened or used, ensuring that it's in an untouched state.

New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.

Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.

Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.

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