Analog signal conditioner X1-NIS-AO-02-S

4-20 mAisolated

SIL2 HART® Isolating Driver The Isolating Driver X1-NIS-AO-02 module is a high integrity analog output interface suitable for applications requiring SIL 2 level in safety related systems for high risk industries. It isolates and transfers a 4-20 mA signal from a controller located in Safe Area to a load in the field. The circuit allows bi-directional communication signals, for HART® smart positioners. Line and load open/short circuit detection is provided: the fault in the field is directly mirrored to the PLC AO card as open circuit and it is also reported on the common fault line. To ease maintenance operations, field devices can be disconnected through a two-position insertion/extraction mechanism. This product requires a dedicated Termination Board. - SIL 2 / SC 3 - Installation in Zone 2 / Division 2 - Loop disconnection to ease maintenance operations - HART® compatible - Line & Load short/open circuit programmable diagnostics - Out-of-range fault with programmable thresholds - Field fault mirroring to the DCS/PLC IO Card - High Accuracy - Three port isolation, Input/Output/Supply Technical Specifications: - Power Dissipation: 0.75 W @ 24 Vdc with 20 mA on I/P output, typical. - System Supply Voltage: 24 Vdc nom (18 to 30 Vdc). - Current Consumption: 30 mA @ 24 Vdc with 20 mA on I/P output, typical. - System In Type: Current 4 to 20 mA. - Input fault impedance: 16 kΩ @ 24 Vdc (input current 1.5 mA), typical. - Field Out Type: Current 4 to 20 mA + HART. - Maximum load: 600 Ω. - Response time: 5 ms. - Fault Type: Load short/open with settable limits on voltage, current and resistance. - Fault signalling: common fault & fault mirroring on DCS/PLC IO. - Reference Conditions: 24 V supply, 250 Ω load, 23 ± 1 °C Tamb. - Calibration accuracy: ≤ ±20 µA. - Linearity accuracy: ≤ ±20 µA. - Temperature influence: ≤ ±2 µA/°C. - Isolation Test Voltage: Field Out/System In 2.5 kV; Field Out/System Supply 2.5 kV; System In/System Supply 500 V. - Operating temperature: –40 to +70 °C. - Storage temperature: –45 to +80 °C. - Mounting Type: On custom Termination Board. - Weight: about 50 g. - Dimensions: Width 10 mm, Depth 80 mm, Height 120 mm.