Allen-Bradley 1769-OF4CI CompactLogix Analog Output Module
Configured for precise current signal control in CompactLogix networks, the Allen-Bradley 1769-OF4CI (1769-OF4CI Analog Output Module) provides direct physical/electrical execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-OF4CI |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | 0.65 kg (1.44 lbs) |
| Dimensions | 118 x 35 x 87 mm (H x W x D) |
| Operating Temp | 0 to +60 deg C |
| Power Consumption | 145 mA at 5 VDC, 120 mA at 24 VDC (2.68 W Max Dissipation) |
| Output Channels | 4 Differential, Individually Isolated Channels |
| Output Ranges | 0 to 20 mA, 4 to 20 mA (Full Scale: 0 to 21 mA, 3.2 to 21 mA) |
| Resolution | 16 bits (0.323 uA/bit) |
| Conversion Rate | 110 ms (all channels) |
| Non-Linearity | +/-0.05% Full Scale |
| Load Impedance Range | Resistive: 0 to 500 ohms; Inductive: Max 0.1 mH |
| Power Supply Distance Rating | 8 Modules |
| Isolation Voltage | Channel-to-Channel / Channel-to-Bus: 500 VAC or 710 VDC for 1 min |
Backplane Bus Communication Velocity & Determinism
The Allen-Bradley 1769-OF4CI interfaces directly with the CompactLogix backplane to ensure deterministic data updates across all 4 individually isolated analog channels within a 110 ms conversion cycle. Internal 16-bit DAC circuitry converts digital control words—formatted as raw/proportional values, engineering units, or percent full scale—into analog loop currents. Backplane bus communication velocity is preserved across local expansion racks up to a distance rating of 8 modules, while firmware flash compatibility guarantees synchronized operational timing with MicroLogix 1500 and CompactLogix processors.
Frequently Asked Questions
Q: How does individual channel-to-channel galvanic isolation protect system integrity?
A: Each output channel features independent 500 VAC / 710 VDC isolation barriers that decouple field loop grounds from each other and the backplane, suppressing common-mode noise and ground loops in distributed control wiring.
Q: Is field calibration required when commissioning or replacing a 1769-OF4CI module?
A: No field calibration is required; factory calibration parameters are permanently maintained by internal hardware design to guarantee specified operational accuracy out of the box.
Field Installation Guidelines
Disconnect system backplane power and external loop supply sources before installing or removing the module from the DIN rail assembly. Secure the module onto the 35 mm DIN rail or panel substrate, ensuring the backplane connector locks firmly into the adjacent slot. Wire field current loops using 22 to 14 AWG solid or 22 to 16 AWG stranded copper conductors rated for at least 90 deg C. Route analog current output lines in dedicated, grounded shielded twisted-pair cables away from high-voltage AC conductors and motor drives to suppress electromagnetic field coupling.
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| Condition | 100% New with Original Package |
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| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
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