Introduction
The document discusses the PX range of threshold and signal converters, which are used in process control and monitoring systems to convert various standard process signals. These converters provide galvanic isolation of 3.75kV and allow analogue signals to be fed into digital inputs, complying with EMC immunity/emission and low voltage directive standards.
Threshold Relays
The PXL-10 and PXL-20 threshold relays are designed for monitoring or controlling process signals. They feature adjustable setpoints, hysteresis, automatic locking, and inversion of relay function. The PXL-10 has an SPDT output, while the PXL-20 offers a solid-state output. Both models comply with safety and EMC standards.
Specifications
The relays are designed according to EN60204-1, VDE0110, and IEC664 standards, ensuring electrical safety and isolation. They operate within a temperature range of -20 to 55°C and are mounted on a 35mm DIN-rail, providing electric isolation of 3.75kVAC.
Process Signal Converter PXU-20
The PXU-20 signal converter provides galvanic isolation and converts analogue process signals to other types. It features adjustable offset and gain, LED indication for input status, and is suitable for applications with potential differences or ground loops. It complies with safety and EMC standards.
Technical Data
The PXU-20 supports various input signals with high impedance and offers outputs such as 4-20mA DC and 0-10V DC. It provides accuracy of less than 1% and linearity of less than 0.05% of full scale, operating on supply voltages of 24V DC, 24V AC, or 110-230V AC.
Temperature Converters (PXT-10/11, PXT-20)
These converters are designed for Pt100/Pt1000 probes, handling temperature ranges of -50 to 300°C and -50 to 100°C. They offer outputs of 0-10VDC, 2-10VDC, 0-20mA, and 4-20mA, with adjustable offset and gain, and are galvanically isolated.
Resistance to Process Signal Converter (PXR-10)
This device converts resistance inputs to analog signals with similar output options as the temperature converters, featuring galvanic isolation and adjustable output settings.
Process Signal to Frequency Converter (PXF-10)
Converts analog signals to frequency outputs with adjustable offset and gain, supporting various input signals and operating on multiple supply voltages.
Standards and Compliance
All devices comply with standards such as EN60204-1, VDE0113, EN61010 for electrical safety, and EMC standards EN50081-1 and EN50082-2, and are CE-marked.
Technical Data
Devices offer accuracy <1% without adjustment, linearity <0.05% of full scale, and operate within -20 to 55°C. They are housed in Noryl material with IP20 protection and designed for DIN-rail mounting.
General FeaturesAll models are designed for DIN-rail mounting, feature screw terminals for easy installation, and
LED indicators for status information. They are housed in Noryl material, ensuring durability and compliance with safety standards.
Applications
These converters are suitable for industrial applications where frequency or current signals need to be converted to analogue signals for process control systems.