Configured for high-speed analog signal sampling and process data acquisition in SYSMAC CJ Series systems, the Omron CJ1W-AD041-V1 (CJ1W-AD041-V1 Analog Input Module) provides direct physical/electrical execution across 4 configurable voltage and current input channels.

Technical Identifier Matrix

• Base Hardware Model: CJ1W-AD041-V1
• Full Part Number: CJ1W-AD041-V1
• Product Type: High-Speed Analog Input Module
• Series Family: Omron SYSMAC CJ Series
• Module Classification: Special I/O Unit
• Channel Count: 4 analog inputs
• Terminal Block: 18-point detachable terminal block (M3 screws)

Hardware Specifications

Omron Backplane Bus Velocity & Real-Time Logic Execution

The CJ1W-AD041-V1 module interfaced with the CJ Series CPU backplane processes analog signals into 16-bit binary representations within a minimum conversion period of 250 us per point. High backplane transmission rates support dynamic sampling for high-density I/O configurations while maintaining low cycle overhead. Built-in processing options—including mean value buffer averaging (n = 2 to 64), peak value holding, input disconnection detection, and digital offset/gain adjustment—run locally on hardware, freeing the host controller for high-speed ladder logic execution. Firmware flash initialization provides automatic hardware register allocation on bus startup.

Package Contents & Ordering Information

• 1x Omron CJ1W-AD041-V1 Analog Input Unit
• 1x 18-point detachable terminal block with M3 terminal screws
• 1x Hardware installation sheet

Field Installation Guidelines

• Backplane Insertion: Slide the module onto the guide rails of the CJ Series CPU or expansion rack until the backplane bus connection firmly seats into the backplane socket.
• Terminal Wiring: Wire field instrument signals to the 18-point detachable terminal block using M3 screw connections, ensuring correct polarity for voltage or 4-20 mA current loops.
• Cable Shielding: Route analog signal cables inside twisted-pair conductors enclosed by continuous 360-deg braid shields bonded to the control panel earth ground bus.
• System Grounding: Connect the CJ Series rack functional earth terminal directly to a single-point copper grounding bar with an impedance measurement under 100 Ohms.

Frequently Asked Questions

• Is hot-swapping supported for the CJ1W-AD041-V1 on a CJ Series backplane bus?

  No. Main system power must be isolated before removing or installing the module on the backplane to prevent hardware damage.

• What is the maximum current draw on the 5 VDC internal rack bus?

  The CJ1W-AD041-V1 draws a maximum current of 420 mA at 5 VDC directly from the internal backplane power supply.

• Does the module provide electrical channel-to-channel isolation between inputs?

  No. The module provides photocoupler isolation between the I/O signals and controller backplane logic, but input channels share a common ground circuit.

• What A/D conversion speeds are supported by the input processing hardware?

  The module features a user-selectable A/D conversion period of either 1 ms per point or 250 us per point depending on resolution settings.

• How does the disconnection detection function operate on 4 to 20 mA current loops?

  The module monitors the input level and sets the Disconnection Detection Flag when a signal drops below the threshold (e.g., 1 to 5 V or 4 to 20 mA range loss).

• What is the input impedance for current and voltage inputs?

  Voltage inputs provide an input impedance of 1 MOhm minimum, while current inputs present a rated input impedance of 250 Ohms.

• What cable shielding requirement applies to field analog signal lines?

  Analog lines must utilize twisted-pair cabling enclosed in a continuous 360-deg braid shield connected directly to panel earth ground.

• What functional earth ground specification is required for system commissioning?

  The functional earth terminal on the CPU or expansion rack must connect directly to ground bus with resistance under 100 Ohms.