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1746-NIO4V
Allen Bradley
| Product Description |
The 1746-NIO4V is a combination analog I/O module belonging to Allen-Bradley’s SLC™ 500 series (product series: Bul. 1746 / 1747), designed for compact PLC systems. 1746-NIO4V integrates 2 analog input channels and 2 analog output channels in a single slot, making 1746-NIO4V suitable for industrial scenarios that require both signal collection and control output (such as closed-loop control of temperature, pressure, and flow). Each input channel of 1746-NIO4V supports user-selectable voltage or current signals via DIP switches, while the output channels of 1746-NIO4V are dedicated to voltage signals. 1746-NIO4V features 16-bit resolution for inputs and 14-bit resolution for outputs, ensuring high-precision signal conversion. 1746-NIO4V incorporates a 6-pole Gaussian digital filter for input channels to suppress high-frequency noise, and all analog common terminals (ANL COM) of 1746-NIO4V are internally connected, with channels grouped isolated from ground but not individually isolated. 1746-NIO4V is compatible with SLC 500 modular and fixed controllers, drawing power from the system backplane without the need for an external 24V DC power supply. 1746-NIO4V comes with a removable terminal block for easy wiring and maintenance, and supports programming functions such as signal scaling, range checking, and retentive output via SLC 500 programming software. 1746-NIO4V receives continued technical support and lifecycle management services from Rockwell Automation, ensuring reliable operation in industrial environments.
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| Key Parameters |
Core Specifications: 2 differential analog input channels (voltage/current selectable per channel) and 2 analog voltage output channels. Input signal ranges include -10 to +10 V DC, 0 to 10 V DC, 0 to 5 V DC, 1 to 5 V DC (voltage) and -20 to +20 mA, 0 to 20 mA, 4 to 20 mA (current). Output voltage range is -10 to +10 V DC (±1 LSB). Performance Metrics: Input converter resolution 16-bit, repeatability ±1 LSB, non-linearity 0.01%; output converter resolution 14-bit, non-linearity 0.05%. Input overall accuracy at 25 °C (77 °F) max ±0.284% of full scale, at 0–60 °C (32–140 °F) max ±0.504% of full scale. Output overall accuracy at 25 °C (77 °F) max ±0.208% of full scale, at 0–60 °C (32–140 °F) max ±0.384% of full scale. Signal Processing: Input common mode rejection at 60 Hz (min) 105 dB, normal mode rejection at 60 Hz (min) 55 dB, channel bandwidth 10 Hz, step response (95% settling) 60 ms. Output step response (95% settling) 2.5 ms. Electrical Parameters: Input impedance 1 MΩ (voltage), 250 Ω (current); output load range 1 KΩ to ∞, maximum load current 10 mA. Field wiring to backplane isolation 500 V DC. Input overvoltage protection supports 220 V AC/DC continuously (across IN+ to IN-). Power Consumption: Backplane current draw max 55 mA (5 V DC) and 115 mA (24 V DC); no external 24 V DC power supply required. Environmental Adaptability: Operating temperature 0–60 °C (32–140 °F), storage temperature -40–85 °C (-40–185 °F). Relative humidity 5–95% (non-condensing), compliant with NEMA Standard ICS 2-230 for noise immunity. Mechanical & Wiring: Recommended cable is shielded Belden #8761, maximum wire size #14 AWG. Terminal torque 0.565 Nm (5 lb-in). Module dimensions match SLC 500 single-slot design, with a removable terminal block. Programming & Addressing: Module ID code 3202. Input channels addressed as 2 words (I:e.0, I:e.1) and output channels as 2 words (O:e.0, O:e.1) in the I/O image table (e = slot number). Supports scaling via standard math, SCL (Scale), or SCP (Scale with Parameters) instructions. Certifications & Compliance: C-UL Listed for Class 1, Div 2 hazardous locations; compliant with EMC directives (EN 50081-2, EN 50082-2) and relevant safety standards. |
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