Allen Bradley 1746-OW16 Encoder Control Digital AC Relay Input/Output Module

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Brand model: AllenBradley
Product Name: 1746-OW16
Warranty: 1 year
Size: 23.00 x 13.00 x 11.50 inches
Weight: 0.3kg
Status: New/Used

Categories: A-B

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Description

Allen Bradley 1746-OW16 Encoder Control Digital AC Relay Input/Output Module

1746-OW16

What sets the Allen-Bradley 1746-OW16 apart is its relay output design, which handles both AC and DC loads without requiring separate modules—simplifying system design and reducing inventory costs. Unlike solid-state alternatives, its relays provide physical isolation between the SLC 500 backplane and field devices, protecting sensitive controller electronics from voltage spikes or load faults. Whether deployed in a automotive assembly line controlling robotic grippers or a food processing plant activating wash-down pumps, the Allen-Bradley 1746-OW16 ensures reliable, repeatable load actuation critical to maintaining production continuity.

Label	Specification
Model Number	1746-OW16
Brand	Allen-Bradley (Rockwell Automation)
Type	SLC 500 16-Point Digital Output Module
Output Technology	Electromechanical Relays
Number of Channels	16 (2 groups of 8 channels)
Rated Output Voltage	120V AC / 240V AC; 24V DC
Max Output Current	2A per channel (resistive load)
Operating Temp	-10°C to 55°C (14°F to 131°F)
Mounting	SLC 500 Chassis (1746 Series, 1 slot)
Power Consumption	5V DC Backplane: 120mA
Isolation	Channel-to-Backplane: 1500V AC (1min)
Certifications	UL, CSA, CE, Class I Division 2
Terminal Type	Screw-Clamp (accepts 14–22 AWG wire)
Relay Life	100,000+ operations (at rated load)

The Allen-Bradley 1746-OW16 excels in industrial environments due to its thoughtful engineering tailored to real-world load control challenges. Its 16 channels are grouped into two sets of 8, each sharing a common power terminal—this configuration reduces wiring complexity when controlling multiple devices on the same voltage (e.g., eight 120V AC conveyor relays), saving installation time and minimizing cable clutter. The relay contacts are rated for 2A resistive load, making the module suitable for both light-duty indicators and heavier-duty solenoids, eliminating the need for external contactors in many applications.

Compatible and Related Models

1747-L541: SLC 500 5/04 controller that sends digital signals to the 1746-OW16, enabling complex load control logic.
1746-IB16: 16-point digital input module that pairs with the 1746-OW16 to create closed-loop control (e.g., monitoring a valve position sensor to confirm actuation).
1746-OB16: Solid-state digital output module for high-speed switching (e.g., LED displays), a complementary alternative to the 1746-OW16 for non-inductive loads.
1746-P1: 120V AC power supply that provides backplane power to the 1746-OW16 and other SLC 500 modules in the chassis.
1746-A7: 7-slot SLC 500 chassis that houses the 1746-OW16 alongside controllers and input modules in compact systems.
1747-M13: Flash memory module for the 1747-L541, storing programs that control the 1746-OW16’s output cycles.
RSLogix 500: Programming software used to configure the 1746-OW16’s channel behavior (e.g., latching outputs) and monitor status.
1746-TB3: Terminal block extender for the 1746-OW16, simplifying wiring in tight chassis installations or when reconfiguring loads.