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Specification & Description
| Specification | Description |
|---|---|
| Part Number | KFD0-CS-1.50 |
| Alternative Part Number | KFD0CS150 |
| Manufacturer | Pepperl + Fuchs |
| Signal Type | Analogue output |
| Supply Voltage | Loop powered |
| Power Loss | 0.2 W |
| Input Connection | Terminals 12-, 11+; 8-, 10-, 9+ |
| Rated Input Voltage (Ui) | 10 ... 35 V |
| Rated Input Current (Ii) | 4 ... 20 mA |
| Output Connection | Terminals 1+, 2-; 4+, 5- |
| Output Voltage | ≥ 0.9 x Uin - (0.23 x current in mA) - 0.7 for 10 V < Uin < 26.1 V |
| Short-circuit Current | ≤ 100 mA |
| Transfer Current | ≤ 25 mA |
| Deviation After Calibration | ± 20 µA incl. calibration, linearity, hysteresis and load fluctuations at 20 °C |
| Ambient Temperature Influence | ≤ 2 µA/K (0 ... +50 °C); ≤ 5 µA/K (-20 ... +60 °C) |
| Rise Time | ≤ 5 ms at 4 ... 20 mA and Uin = input voltage < 26 V |
| Electrical Isolation | Input/output safe electrical isolation acc. to EN 50020, voltage peak value 375 V |
| Electromagnetic Compatibility | Directive 89/336/EEC EN 50081-2, EN 50082-2 |
| Insulation Coordination | EN 50178 |
| Protection Degree | IEC 60529 |
| Ambient Temperature Range | -20 ... 60 °C |
| Protection Degree | IP20 |
| Mass | Approx. 100 g |
| Dimensions | 20 x 107 x 115 mm |
| Application | Isolation of power loops for control of positioners, I/P converters, signal duplication |
The Pepperl + Fuchs KFD0-CS-1.50 is a high-precision DC repeater designed to provide galvanic isolation for measuring circuits in industrial settings. This one-channel device is loop-powered and requires no auxiliary power, making it an efficient solution for a variety of applications. It boasts an accuracy of 0.1%, ensuring reliable and accurate signal transmission.
Constructed to meet the rigorous standards of EMC according to NAMUR NE 21, the KFD0-CS-1.50 is suitable for use with positioners, I/P converters, transmitters, and indicators. Its input and output are galvanically isolated, which protects signal integrity and prevents electrical interference.
The unit's technical specifications include an input rated voltage of 10 to 35 V and a rated current of 4 to 20 mA. The output voltage is designed to be ≥ 0.9 x Uin - (0.23 x current in mA) - 0.7 for input voltages between 10 V and 26.1 V, and ≥ 23 V - (0.23 x current in mA) for input voltages above 26.1 V. The short-circuit current is limited to ≤ 100 mA, and the transfer current is ≤ 25 mA.
With a deviation after calibration of ± 20 µA, which includes calibration, linearity, hysteresis, and load fluctuations up to a load of 1 kOhm at 20 °C, the KFD0-CS-1.50 maintains its precision across a range of conditions. The rise time is ≤ 5 ms at 4 to 20 mA with an input voltage of less than 26 V, ensuring swift response times for dynamic processes.
The device is safely electrically isolated according to EN 50020 with a voltage peak value of 375 V, and it conforms to the directives of electromagnetic compatibility as per EN 50081-2 and EN 50082-2. It also meets the insulation coordination and electrical isolation standards of EN 50178.
Designed for durability and reliability, the KFD0-CS-1.50 operates within an ambient temperature range of -20 to 60 °C and is housed in a compact enclosure with IP20 protection. Weighing approximately 100 g and measuring 20 x 107 x 115 mm, it is both lightweight and space-efficient for easy integration into existing systems.
The KFD0-CS-1.50 is ideal for isolating power loops for control of various field devices and can also be used for signal duplication, although not free of reactions, with one input and two outputs. This makes it a versatile component for a wide range of industrial automation tasks.
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Frequently Asked Questions
What is the function of this DC repeater?
The DC repeater functions as a 'DC current isolator', providing galvanic isolation between the input and output signals without the need for auxiliary power. It is used to isolate power loops for the control of positioners, I/P converters, and other similar devices.
Can this device be used with 2-wire transmitters?
Yes, the KFD0-CS-1.50 is suitable for isolation of power loops for 2-wire transmitters, fire detectors, and similar devices. A voltage source is used as the supply, with a series resistor registering the measurement current.
What are the input and output voltage and current specifications?
The input rated voltage ranges from 10 to 35 V, with a rated current of 4 to 20 mA. The output voltage is ≥ 0.9 x Uin - (0.23 x current in mA) - 0.7 for 10 V < Uin < 26.1 V, and ≥ 23 V - (0.23 x current in mA) for Uin > 26.1 V, with a short-circuit current ≤ 100 mA and transfer current ≤ 25 mA.
What is the accuracy of the device?
The device has an accuracy of 0.1%, with a deviation after calibration of ± 20 µA, which includes calibration, linearity, hysteresis, and load fluctuations at the output up to a load of 1 kOhm at 20 °C.
How does ambient temperature affect the device?
The influence of ambient temperature on the device's performance is minimal, with a deviation of ≤ 2 µA/K between 0 and +50 °C, and ≤ 5 µA/K between -20 and +60 °C.
What is the electrical isolation specification for this device?
The KFD0-CS-1.50 provides safe electrical isolation between input and output according to EN 50020, with a voltage peak value of 375 V.
What are the dimensions and weight of the device?
The device measures approximately 20 x 107 x 115 mm and weighs around 100 g.
Is the device suitable for use in hazardous areas?
Yes, the device is designed with safe electrical isolation suitable for use in conjunction with hazardous areas, adhering to the relevant standards.
What is the protection degree of the device?
The KFD0-CS-1.50 has a protection degree of IP20, indicating that it is protected against solid objects larger than 12.5 mm but not against water.
Can the device be used for signal duplication?
Yes, the device can be used for signal duplication, providing one input and two outputs, although it is not free of reactions.
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