Honeywell 05704-A-0145 Four channel control card
Specific Parameters
- Input signal type: 4 – 20mA current signal
- Number of channels: 4
- Input impedance: Approximately 250Ω (typical value)
- A/D conversion accuracy: 12 – bit or higher (subject to the manual for details)
- Isolation voltage: 500VAC (field side and system side)
- Power supply voltage: 18VDC to 32VDC
- Operating temperature: -5°C to +55°C (typical value)
- Installation method: Plug – in for System 57 rack
- Front – panel indication: Each channel has A1, A2, A3 alarm LEDs and fault LEDs
- Output channels: 2 relay outputs for connecting gas detectors and controlling alarm devices
- Loop – powered output voltage: Isolated 24V±5% regulated
- Maximum current: 25mA
- Measurement signal range: 0 to 25mA (linear)
- Maximum line resistance: 500 ohms
- Insulation breakdown voltage: Isolation breakdown voltage ≥ 1000V DC to system 0V
- Dimensions: 115mm x 48mm x 150mm
- Weight: Approximately 1.2kg
Product Performance
- High input density: Four independent 4 – 20mA input channels are integrated on a single card, achieving a high analog input density. It can reduce the number of modules required in the system, lower hardware costs and the wiring complexity of the control cabinet, and provide a cost – effective solution for multi – signal monitoring applications.
- Accurate signal conversion: Adopts a high – precision analog – to – digital converter (A/D) to accurately convert 4 – 20mA current signals into digital quantities, ensuring that the control system can accurately read the values of process variables and guaranteeing data accuracy.
- Reliable electrical isolation: The module is internally integrated with electrical isolation, effectively protecting the control system from electrical interference and voltage fluctuations on the field side, improving system stability and reliability.
- Convenient status diagnosis: The LED indicators on the front panel can help users quickly diagnose the status of the module and channels, facilitating maintenance and troubleshooting.
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