The Omron CS1W-AD081-V1, also cataloged as the CS1W-AD081 Analog Input Unit, operates as a dedicated hardware component for multichannel analog signal acquisition and analog-to-digital conversion within CS-series Special I/O platforms.

Channel Configuration & Part Number Decoding

The CS1W-AD081-V1 belongs to the Omron CS-series analog I/O module family. The CS1W designation identifies CS-series bus expansion hardware, AD081 indicates an 8-point high-density analog voltage/current input unit, and the -V1 suffix denotes enhanced resolution and conversion speed software selectable parameters across individual input channels.

Electrical & Operational Specifications

Bus Communication Velocity & System Integration

The module maintains high backplane bus communication velocity across the rack chassis to execute high-speed data transfers into CPU memory registers. Synchronized sampling optimizes overall I/O density scaling while maintaining hardware firmware flash compatibility across CS-series rack expansion configurations.

Packaging Configuration

• 1 x Omron CS1W-AD081-V1 Analog Input Unit
• 1 x 21-Point Detachable Terminal Block

Wiring & Mechanical Mounting Protocol

• Isolate all system rack power lines before wiring or removing the 21-point detachable terminal block.
• Use shielded twisted-pair cabling for all 4-20 mA and voltage signals to prevent EMI corruption.
• Connect input signal cable shields to a single-point panel ground terminal near the module backplane.
• Verify M3 terminal screw tightness to 0.5 N.m torque to ensure stable electrical connections.

Technical FAQ

• What is the maximum conversion speed per point on the CS1W-AD081-V1?

  The module converts signals at a maximum speed of 250 us per point, configurable to 1 ms per point.

• Can current and voltage inputs be used simultaneously on different channels?

  Yes, input signal ranges are set independently for each of the 8 input channels via unit settings.

• Does the CS1W-AD081-V1 support live module insertion or removal?

  No, module replacement requires completely de-energizing the PLC backplane power supply.

• What terminal block screw specification is used for external wiring?

  The removable field terminal block utilizes standard M3 screw terminals for wire lug termination.

• What internal current draw does the module exert on the CPU backplane?

  The unit draws a maximum of 120 mA at 5 VDC and up to 90 mA at 26 VDC from the backplane supply.

• How is full-scale signal resolution configured on this analog module?

  Resolution is selectable between 1/8,000 and 1/4,000 via unit memory allocation software switches.

• What type of external wiring cable is recommended for current loops?

  Twisted-pair shielded cable with grounded shielding at the panel end should be used for all signals.

• What is the storage temperature tolerance for unused spare units?

  Uninstalled modules should be stored in ambient conditions between -20 and 75 deg C.