Configured for high-density multi-channel analog signal acquisition in CS1 Series PLC system racks, the Omron CS1W-AD161 (CS1W-AD161 Analog Input Module) provides direct physical/electrical execution. It converts incoming field process signals including 4-20 mA current loops and 0-10 VDC voltage spans into digitized binary registers for CPU scan processing.

Model Suffix & Designation Structure

• CS1W: Special I/O and standard rack expansion module platform for CS1 controller families.
• AD: Analog-to-digital input conversion functionality.
• 161: High-density 16-channel input allocation operating with high-speed digital resolution.

System Specifications & Operating Thresholds

High-Density Architecture & Bus Performance

The CS1W-AD161 card optimizes backplane bus communication velocity across multi-rack control topologies. High channel conversion rates allow I/O density scaling up to 16 analog loops per single slot footprint without degrading PLC scan cycle performance. Built-in digital filtering and firmware flash compatibility enable continuous background noise rejection during real-time data frame transfers across the backplane bus.

Included Box Items

• 1 x Omron CS1W-AD161 Analog Input Module
• 1 x Removable 18-Point Field Terminal Block
• 1 x Terminal Assignment Label Sheet

Field Wiring & Rack Installation Directives

Backplane Mounting Procedure

• Hook the top lug of the module into the designated slot on the CS1 backplane base chassis.
• Rotate the module downward until the bottom clip locks into position on the rack frame.

Signal Wire Termination Protocol

• Utilize twisted-shielded pair cables for all analog voltage and current field connections.
• Ground the cable braid shield at a single point on the enclosure earth bus to eliminate ground loop voltage differentials.

Frequently Asked Questions

• What signal input ranges can be configured on the CS1W-AD161 module?

  The module supports 1 to 5 V, 0 to 5 V, 0 to 10 V, -10 to +10 V, and 4 to 20 mA current loops.

• What current does the CS1W-AD161 draw from the backplane 5 VDC rail?

  The module draws approximately 0.20 A from the 5 VDC backplane bus during full operation.

• How many field channels are provided on a single CS1W-AD161 unit?

  The unit provides 16 single-ended analog input channels terminated at a single removable block.

• Is hot-swapping allowed for this analog input module?

  No, power to the rack backplane must be completely shut off before replacing or servicing the module.

• How are current input signals wired on the terminal block?

  For 4-20 mA operation, short the corresponding voltage input terminal to the current input terminal as specified in the manual.

• What digital conversion resolution is supported by the hardware?

  Depending on software register configuration, the module operates at either 1/4000 or 1/8000 resolution.

• How should cable shielding be terminated for noisy environments?

  Connect cable shields strictly at the cabinet earth bar and leave the field sensor end ungrounded to prevent ground noise.

• Does the module require an external power supply for signal conversion logic?

  The internal logic operates off the 5 VDC backplane rail, while external 24 VDC may be required depending on loop transmitter wiring.