Brand: Allen Bradley Description: Analog Combination Module Condition: Brand New Certificate: COO TEST REPORT WARRANTY LETTER Warranty: 1 year Inventory Qty: 4 Payment Term: T/T Shipping Port: Shenzhen Allen Bradley 1746-NIO4I possesses two input and two output channels that are both for both analyzing and controlling analoguate information in industrial applications. Its primary purpose is to change analog values (current/voltage) to digital values (16 bit integer), and it is also suitable for working together with PLCs of the SLC 500 series. It is widely used in automation monitoring and closed-loop control scenarios.
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Manufacture |
Allen Bradley |
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Model Number |
1746-NIO4I |
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Ordering Number |
1746-NIO4I |
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Catalog |
SLC 500 |
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Country Of Origin |
Switzerland |
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HS CODE |
8538900000 |
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Dimension |
14*14*6cm |
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Weight |
0.4kg |
Product Features
Allen Bradley 1746-NIO4I with 2 differential input channels making it possible to be calibrated by DIP switches to current (4-20mA, 0-20mA) or voltage (1-5V, 0-10V) input, non-isolated.
Allen Bradley 1746-NIO4I possesses 2 current output channels, which accommodate 0-20mA (normal range) or 0-21mA (overrange) and are non-isolated.
Allen Bradley 1746-NIO4I input channels each include a 6th-order Gaussian digital filter with a 10Hz cutoff frequency to filter 50/60Hz signal noise from power lines. At 60Hz, CMRR is ≥105dB, NMRR is ≥55dB.
After a sudden change in the input signal, Allen Bradley 1746-NIO4I reaches 95% of the stable value within 60 ms; the output signal response is faster (reaching 95% in 2.5 ms).
Allen Bradley 1746-NIO4I supports real-time communication with the SLC 500 processor, with a data update cycle of 512µs (all channels processed in parallel). Functions such as range scaling and over-limit detection can be programmed.
Product Working Principle
Allen Bradley 1746-NIO4I Signal Flow
Input: Sensor signals (e.g., 4-20 mA current) are connected to the channel via terminals. The signal type (current/voltage) is configured via DIP switches, then filtered and converted to a 16-bit integer via A/D conversion. The result is stored in the processor's input image table (address e.g., I:e.0, where e is the slot number).
Output: The processor sends 16-bit integers via the output mapping table (address e.g., O:e.0), which are converted into current signals via D/A conversion to drive actuators (e.g., valves).
Allen Bradley 1746-NIO4I Configuration Notes
DIP Switch Settings: Switch 1 controls input channel 0, Switch 2 controls input channel 1 (ON = current, OFF = voltage).
Module ID code: Enter 3201 during configuration to identify the module type.
Wiring: Use shielded cable with the shield grounded at one end (input connected to chassis, output connected to load), and avoid running parallel to high-voltage cables.
Product Parameter
The following detail is for Allen Bradley 1746-NIO4I Analog Combination Module.
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Item |
Current Input (e.g., 4-20mA) |
Voltage Input (e.g., 1-5V) |
Current Output (e.g., 4-20mA) |
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Resolution |
16-bit |
16-bit |
14-bit |
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Input Range |
-20mA to +20mA (normal) -30mA to +30mA (maximum) |
-10V to +10V (normal) ±220V (overvoltage protection) |
0-20mA (normal) 0-21mA (overrange) |
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Input Impedance |
250Ω |
1MΩ |
0-500Ω |
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Accuracy (at 25°C) |
±0.365% of full scale |
±0.284% of full scale |
±0.298% of full scale |
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Accuracy (at 0-60°C) |
±0.642% of full scale |
±0.504% of full scale |
±0.541% of full scale |
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Resolution |
1.22070µA/LSB |
305.176µV/LSB |
2.56348µA/LSB |
