The IM21-14-CDTRI is a multi-channel isolated signal converter/transmitter under the Turck brand, mainly used for converting, isolating and transmitting analog signals in industrial automation systems. The following is its detailed description:
- Signal Conversion and Isolation: Can isolate and convert on-site analog input signals (such as current, voltage) into standard analog output signals. At the same time, it provides triple isolation between power supply, input and output, effectively suppressing electromagnetic interference (EMI) and common-mode noise in industrial environments, and ensuring the stability of signal transmission.
- Multi-Channel Design: Equipped with 4 input channels and 4 output channels, supporting flexible configuration of multiple signal types. It can process multiple different analog signals simultaneously, making it suitable for complex industrial monitoring and control scenarios.
- Wide-Range Adaptability: Compatible with a variety of common analog input signals (such as 4-20mA, 0-20mA, 0-10V, etc.). The output signal can also be configured as a standard analog quantity according to requirements, meeting the signal matching needs between different devices.
- Diagnosis and Status Indication: The module is usually equipped with LED indicators, which can intuitively display power status, channel working status and fault information, facilitating quick troubleshooting.
- Power Supply Voltage: Typically 24V DC (18-30VDC), with reverse polarity protection to prevent damage caused by wrong wiring.
- Input Signal Range:
- Current input: 4-20mA, 0-20mA, etc. (specifically configurable).
- Voltage input: 0-10V, 0-5V, etc. (specifically configurable).
- Output Signal Range:
- Standard analog output, such as 4-20mA (load impedance ≤ 500Ω), 0-10V (load impedance ≥ 10kΩ), etc., with high accuracy (usually error ≤ 0.1% full scale).
- Isolation Strength: The isolation voltage between input, output and power supply is usually ≥ 2.5kVAC (for 1 minute), and the common-mode rejection ratio (CMRR) is high, ensuring accurate signal transmission in complex electromagnetic environments.
- Mounting Method: DIN rail mounting (complying with EN 50022 standard), with a compact structure and a width usually of 22.5mm, saving control cabinet space.
- Protection Rating: IP20 (suitable for installation inside indoor control cabinets).
- Operating Temperature Range: -25℃ to +70℃, adapting to the wide-temperature environment of industrial sites.
- Housing Material: Polycarbonate (PC), with certain impact resistance and chemical resistance.
- Certification: Usually complies with international certification standards such as CE, UL and CSA, ensuring compliant use in different regions.
- Application Fields: Widely used in industrial automation fields such as petrochemical, metallurgy, electric power and machinery manufacturing. It is used to connect sensors, transmitters with control systems such as PLC and DCS, realizing the isolation, conversion and reliable transmission of analog signals.
