OMRON CJ1W-DA041 Analog Output Module

The OMRON CJ1W-DA041 is a high-precision analog output module designed for use with OMRON CJ series Programmable Logic Controllers. This Special I/O Unit provides 4 analog output channels, each independently configurable for voltage or current output, enabling precise control of analog actuators such as variable speed drives, valve positioners, and proportional control devices.

Product Overview

The CJ1W-DA041 is part of the OMRON CJ series Special I/O Units family, which provides specialized analog input and output capabilities for CJ series PLC systems. This analog output module converts digital values from the PLC CPU into analog voltage or current signals that can be used to control a wide range of industrial equipment. The module supports four independent output channels, with each channel capable of producing multiple signal ranges to match the requirements of different field devices.

The module complies with international standards including UL, CE, and UC1 certifications, ensuring suitability for global industrial applications. The RoHS-compliant construction reflects OMRON's commitment to environmental responsibility.

Output Signal Specifications

The CJ1W-DA041 supports five selectable signal ranges that can be configured independently for each output channel:

• 0 to 5 VDC

• 0 to 10 VDC

• 1 to 5 VDC

• -10 to +10 VDC (bipolar)

• 4 to 20 mA (current loop)

The module provides 12-bit resolution across the selected signal range, enabling precise output control with 4096 discrete steps. The conversion period is 1 millisecond per point, allowing rapid response to changes in the output setpoint value. When using voltage output at the factory setting, accuracy is ±0.3% of full scale at an ambient temperature of 25°C. For current output, accuracy is ±0.5% of full scale.

External Connections and Power Requirements

The CJ1W-DA041 uses a removable terminal block for external wiring, simplifying installation and maintenance. This terminal block allows the module to be replaced without disconnecting individual field wires, reducing system downtime during maintenance operations. The external connection accommodates screw terminal wiring for secure and reliable field connections.

The module requires an external 24 VDC power supply with a tolerance of +10% to -15%, drawing a maximum of 200 mA. Internal current consumption from the PLC backplane is 0.12 A at 5 VDC, with additional consumption for the analog output circuits. The module is assigned one unit number in the CJ series I/O allocation system, requiring minimal configuration for integration into the PLC system.

System Integration

The CJ1W-DA041 installs into any slot of a CJ series PLC rack, connecting to the CPU via the backplane bus. The module's unit number is set using rotary switches on the front panel, determining the memory addresses allocated for the module's operation. The CPU communicates with the module using special I/O instructions, transferring output values from the user program to the module's internal registers for conversion to analog signals.

Configuration of the signal range for each channel is performed through the PLC's programming software, typically CX-Programmer, which provides a user-friendly interface for setting module parameters. The module supports online configuration, allowing parameter changes while the PLC continues to run the user program, though caution is required as outputs may change during reconfiguration.

Applications

The CJ1W-DA041 is ideal for applications requiring precise analog control including speed control of variable frequency drives, position control of servo systems through analog torque or velocity commands, pressure regulation using proportional valves, temperature control with analog-fired SCR power controllers, and flow control for process automation. The four-channel configuration allows a single module to control multiple analog devices, optimizing rack space utilization and reducing system cost.