Application Scenarios
In a wastewater treatment plant, motor control centers are distributed across multiple buildings, each housing pump starters, valve actuators, and level switches that operate on 120V AC control power. Running individual signal wires back to a central PLC cabinet would require extensive conduit and labor. The 1734-IA4 installs directly in a remote POINT I/O rack near the equipment, accepting 120V AC status signals from pump run contacts, valve limit switches, and float switches. The module communicates back to the main controller over an industrial network, reducing wiring costs while providing reliable status feedback for the plant SCADA system.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1734-IA4 |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Category | POINT I/O Digital AC Input Module |
| Number of Inputs | 4 (1 group of 4), non-isolated, sinking |
| On-State Voltage Range | 65–132V AC (nominal 120V AC) |
| On-State Current | 4.0 mA @ 65V AC min; 8.5 mA @ 132V AC max |
| Off-State Voltage, Max | 43V AC |
| Input Impedance | 10.6 kΩ nominal |
| Input Filter Time | 20 ms hardware + 1–65 ms programmable digital filter |
| POINTBus Current | 75 mA @ 5V DC |
| Power Dissipation | 0.50 W @ 132V AC |
| Isolation Voltage | 240V continuous; type tested @ 3250V DC for 60s |
| Dimensions (H×W×D) | 56.0 × 12.0 × 75.5 mm |
| Terminal Base | 1734-TB, 1734-TBS, 1734-TOP, or 1734-TOPS |
| Lifecycle Status | Active |
