WhatsApp:+86 18150087953 WeChat: +86 18150087953 
Email：
Description
Technical Specifications
| Parameter Name | Value |
|---|---|
| Product Model | 1746-OW16 |
| Manufacturer | Rockwell Automation / Allen‑Bradley |
| Product Type | Digital Contact (Relay) Output Module |
| Series | SLC 500 |
| Number of Outputs | 16 (Normally Open Relay Contacts) |
| Output Groups | 2 (8 points per common) -3-4 |
| Operating Voltage (AC) | 5‑265V AC -3-4-9 |
| Operating Voltage (DC) | 5‑125V DC -3-4-9 |
| Current per Output (120V AC) | 1.5 A (break), 15 A (make) -2-4-9 |
| Current per Output (240V AC) | 0.75 A (break), 7.5 A (make) -2-4-9 |
| Current per Output (125V DC) | 1.2 A (break), 0.22 A (make) -4-9 |
| Current per Output (24V DC) | 2.0 A (continuous), 1.0 A (continuous) -4-9 |
| Continuous Current per Module | 16 A (AC) -3-4 |
| Backplane Current (5V) | 0.170 A (170 mA) -3-4-6 |
| Backplane Current (24V) | 0.180 A (180 mA) -3-4-6 |
| Signal Delay (Max Resistive Load) | On = 10 ms, Off = 10 ms -3-4-5 |
| Maximum Thermal Dissipation | 5.7 W -4-9 |
| Operating Temperature | 0°C to 60°C -5 |
| Storage Temperature | -40°C to 85°C -5 |
| Terminal Block | Removable, 1746‑RT25C Orange Terminal Block -6 |
| Dimensions (Approx.) | 151 mm x 35 mm x 145 mm -5 |
| Weight | Approx. 0.45 kg (1.0 lb) -4 |
Main Features and Advantages
Universal voltage compatibility: The 1746‑OW16 eliminates the need for interposing relays by supporting a wide operating voltage range from 5 to 265V AC and 5 to 125V DC-3-4-9. This broad compatibility allows the module to directly interface with diverse field devices, significantly reducing panel complexity, component count, and overall system cost.
Dual‑group isolated architecture: The 1746‑OW16 features two independent output groups with eight points per common terminal-3-4-9. This design enables one group to control AC loads while the other group operates DC loads simultaneously, offering exceptional flexibility for mixed‑voltage applications without requiring additional isolation hardware.
Reliable mechanical relay switching: Each of the 16 channels on the 1746‑OW16 employs robust electromechanical relays that provide galvanic isolation between the control system and field devices. This isolation protects the SLC 500 processor and backplane from voltage transients and surges that commonly occur in industrial environments. The relay contacts are rated for high inrush currents, making the 1746‑OW16 ideal for controlling inductive loads such as motor starters and solenoid valves-2-4.
Fast response with visual status indication: The 1746‑OW16 delivers a predictable 10 ms signal delay for both ON and OFF transitions under maximum resistive load, ensuring responsive and deterministic control-3-4-5. Individual status LEDs for each channel provide immediate visual confirmation of output states, simplifying troubleshooting and reducing diagnostic time during system commissioning and maintenance-5.
Hot‑swappable design with removable terminal block: The 1746‑OW16 supports removal and insertion under power (RIUP), enabling module replacement without shutting down the entire control system and minimizing production downtime. The removable orange terminal block (1746‑RT25C) facilitates easy pre‑wiring of field cables and rapid module exchange, significantly reducing installation and maintenance labor-4-6.
Built‑in surge protection compatibility: The 1746‑OW16 is designed for use with external surge suppression devices across inductive loads, which effectively extends relay contact life and ensures long‑term reliability in demanding switching applications-2-4.
