CJ1W-IA111 | Omron | AC Input Unit

The CJ1W-IA111 is a reliable AC Input Unit designed for the Omron CJ-series PLC system, engineered to interface industrial 100 to 120 VAC signals directly with the controller. This unit provides 16 input points, allowing for efficient monitoring of AC-powered sensors, limit switches, or auxiliary contacts. It features a standard 16-point per common configuration and utilizes a removable terminal block for simplified field wiring and rapid module replacement. The module occupies 1 word in the PLC process image and is optimized for low power consumption, requiring only 0.09 A from the 5 VDC backplane supply.

Features

• 16 AC digital input points for robust field signal acquisition
• 100 to 120 VAC input voltage range
• Standardized 16-point per common configuration
• Removable terminal block for efficient maintenance and installation
• Compact design allocating only 1 word of PLC memory
• Low power consumption (0.09 A at 5 VDC)

Applications

• Monitoring AC power status and line voltages
• Interface for AC-powered sensors and proximity switches
• General-purpose digital signal acquisition in AC-based control environments
• Industrial machinery and process control systems utilizing 110 VAC control logic

Technical Specifications

Installation Guidelines

• Mounting: Secure the CJ1W-IA111 to the CJ-series backplane. Ensure the locking mechanisms at the top and bottom of the unit are fully engaged to establish a secure electrical connection with the PLC bus.
• Wiring: The removable terminal block allows for field wiring to be prepared and managed easily. When handling 100–120 VAC, ensure proper insulation and wire labeling according to safety standards.
• Commoning: All 16 inputs share a single common. Ensure the AC neutral or hot leg connected to the common terminal aligns with the specific requirements of your field devices.
• Safety: Always de-energize the AC field supply and the PLC power before connecting or disconnecting the terminal block to prevent accidental contact with hazardous voltages.