Overview
Input Configuration and Signal Handling
The 1769-IF4 provides four analog input channels, each supporting differential or single-ended configurations. This flexibility allows the module to accommodate different field signal arrangements.
For current measurement, the module supports both 0-20 mA and 4-20 mA ranges. Meanwhile, its 14-bit resolution provides the digital representation required for the controller to process incoming analog signals.
Electrical Characteristics
The module draws bus current from both the 5 VDC and 24 VDC supplies. Its maximum heat dissipation is 2.63 W. In addition, the voltage and current input terminals have different input impedances, which are relevant when checking signal source and wiring requirements.
The rated working voltage is 30 VAC or 30 VDC. The specified operating temperature range is 0 to 60 deg C.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-IF4 |
| Brand | Allen-Bradley |
| Product Type | Analog Input Module |
| Product Line | CompactLogix |
| Number of Inputs | 4 |
| Input Configuration | Differential or Single-Ended |
| Normal Operating Current Ranges | 0-20 mA; 4-20 mA |
| Maximum Resolution | 14 bits (unipolar); 14 bits plus sign |
| Voltage Terminal Input Impedance | Typically 220 kOhm |
| Current Terminal Input Impedance | 250 Ohm |
| Rated Working Voltage | 30 VAC / 30 VDC |
| Maximum Bus Current Draw | 120 mA at 5 VDC; 60 mA at 24 VDC |
| Heat Dissipation | 2.63 W |
| Operating Temperature | 0 to 60 deg C |
| Weight | 0.28 kg (0.63 lbs) |
| GTIN | 10662468992937 |
| UPC | 662468992930 |
Frequently Asked Questions
Q: How many analog input channels does the 1769-IF4 provide?
A: The module provides four analog input channels. They support differential or single-ended configurations.
Q: What current signal ranges does the 1769-IF4 support?
A: The specified normal operating current ranges are 0-20 mA and 4-20 mA. Select the appropriate range according to the connected field instrument and system configuration.
Q: What power supply requirements should be considered?
A: The module draws a maximum of 120 mA from the 5 VDC bus and 60 mA from the 24 VDC bus. These values should be included when calculating the available CompactLogix system power budget.
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