Allen Bradley 1746-OV16 SLC 500 16 Point Digital Output Module

The 1746-OV16 is a 16-channel digital output module belonging to Allen-Bradley’s SLC 500 series, designed for industrial control systems requiring current sinking DC output. 1746-OV16 operates with a 24V DC voltage category and is specialized in driving low-to-medium power DC loads such as solenoids, relays, and indicator lights, making 1746-OV16 suitable for automated production lines, assembly equipment, and other industrial scenarios.

1746-OV16 features a color-coded removable terminal block for easy wiring and maintenance, and supports compatibility with bulletin 1492 interface modules and pre-wired cables to simplify system integration. 1746-OV16 adopts a current sinking output design, where each channel sinks current from the load to 1746-OV16, ensuring stable switching control.

With built-in surge suppression capabilities for inductive loads (via external diode configuration), 1746-OV16 protects itself and connected devices from voltage spikes. 1746-OV16 operates stably across a wide temperature range and has reasonable thermal dissipation performance, adapting to harsh industrial environments. 1746-OV16 draws power exclusively from the SLC 500 system backplane (5V DC), eliminating the need for external power supplies and optimizing chassis space utilization.

Core Specifications: 16 digital output channels, current sinking type, 24V DC voltage category. 16 points share a common terminal (16 points per common).

Electrical Parameters: Operating voltage range 10–50V DC. Single-channel continuous current 1.0A @ 30°C (86°F), 0.5A @ 60°C (140°F); module total continuous current 8.0A @ 0–60°C (32–140°F). Surge current per point 1.0A @ 30°C (86°F) and 1.0A @ 60°C (140°F) for 10ms (repeatable once every 1s @ 30°C, once every 2s @ 60°C).

Signal Performance: On-state voltage drop max 1.2V @ 0.5A. Minimum load current 1mA; off-state leakage current max 1mA. Signal on delay max 0.1ms (resistive load); signal off delay max 1.0ms (resistive load).

Power Consumption: Backplane current draw 270mA @ 5V DC, 0mA @ 24V DC. Thermal dissipation min 1.40W, max 7.60W; power per point 0.338W.

Environmental Adaptability: Operating temperature 0–60°C (32–140°F); storage temperature -40–85°C (-40–185°F); maximum ambient humidity 95% (non-condensing).

Mechanical & Wiring: Equipped with color-coded removable terminal block. Recommended surge suppression: 1N4004 diode reverse-wired across 24V DC inductive loads. Compatible with pre-wired cables (catalog number 1492-CABLE series) for connection to 20-terminal IFM/XIM.

Protection & Compatibility: Suitable for resistive and inductive loads (with surge suppression). Compatible with SLC 500 modular and fixed controllers. Not equipped with electronic short-circuit or overload protection (unlike E-series modules).

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