Manufacturer: Omron
Product No.: CPM1A-20CDT-A-V1
Country of origin:Japan
Product Type: PLC CPU Modules
Payment: T/T, Western Union
Weight: 500g
Dimensions: 130 mm x 110 mm x 95 mm
Shipping port: Xiamen
Warranty: 12 months
To coordinate discrete, machine-level logic within localized industrial control architectures, the Omron CPM1A-20CDT-A-V1 serves as an integrated micro PLC base unit. This controller consolidates CPU processing, power conversion, and digital I/O interfaces into a single compact housing. Engineered for stand-alone machinery, basic conveyor control, and utility automation, it executes operations with an integrated AC power supply and high-speed transistor switching logic, eliminating the footprint requirements of modular rack systems.
| Specification Parameter | Technical Value |
|---|---|
| Manufacturer | Omron Industrial Automation |
| Model Code | CPM1A-20CDT-A-V1 |
| Product Series | CPM1A Micro Controller Series |
| Supply Voltage | 85 to 264 VAC, 50/60 Hz |
| Power Consumption | 60 VA maximum |
| Built-in Input Points | 12 points (24 VDC, photo-coupler isolated) |
| Built-in Output Points | 8 points (Transistor, Sink type) |
| Program Memory Capacity | 2,000 words (EEPROM) |
| Data Memory Capacity | 1,000 words (Read/Write DM area) |
| Instruction Execution Speed | Basic: 0.72 microseconds; Special: 1.72 microseconds |
| High-Speed Input Functions | Single-phase incremental encoder up to 5 kHz |
| High-Speed Output Functions | Pulse train output up to 2 kHz (transistor sink) |
| Expansion Capability | Not supported on 20-point AC base units |
| Enclosure Protection Rating | IP20 (equivalent) |
| Operating Temperature | 0 to 55 degC ambient (non-condensing) |
| Dimensions (H x W x D) | 90 mm x 86 mm x 70 mm |
| Shipping Weight (Calculated) | 0.65 kg |
| Package Dimensions (Calculated) | 130 mm x 110 mm x 95 mm |
| Terminal Block Section | Terminal Label | Function / Connection Assignment |
|---|---|---|
| Upper Terminal Block (Power & Inputs) | L, N | AC Main Supply Power Lines (85 to 264 VAC) |
| GR | Ground / Protective Earth Terminal | |
| COM (Inputs) | Common Terminal for 24 VDC Input Circuits | |
| 00 to 11 | 12 Discrete DC Input Terminals (including high-speed encoder inputs) | |
| Lower Terminal Block (Outputs & Service) | 24VDC Out (+ / -) | Auxiliary Service Power Supply for local transducers (maximum 300mA) |
| COM (Outputs) | Common Negative Return for Transistor Outputs | |
| 00 to 07 | 8 Transistor Sink Outputs (Output 00 and 01 support 2 kHz pulse train output) |
The CPM1A series is legacy, having been succeeded by the modern Omron CP1E or CP1L platforms. For migration, logic must be ported using CX-Programmer software. While the core instruction set maps closely, I/O terminal mapping and high-speed counter registers differ. Always review direct hardware configuration offsets prior to porting program loops.
Because the transistor outputs are Sink Type, the load is connected between the positive voltage rail (typically +24 VDC) and the PLC output terminal. Connecting the load to ground instead of the positive terminal will prevent operation and can lead to reverse-current fault modes. Verify that external freewheeling diodes are placed across inductive loads to suppress voltage spikes.
The auxiliary 24 VDC terminal output is useful for loop-powered sensors, but exceeding its 300 mA current limit will cause the internal power supply to switch into current-limiting shutdown. Use an external, isolated power supply for heavy transducer or relay clusters, and ensure its negative common is tied securely to the PLC output COM terminal to close the logic loop.
Snap the base unit housing directly onto standard 35 mm symmetric DIN rail or use the integrated pull-out mounting brackets to secure the unit directly to the backplate.
Route the incoming AC lines (85-264 VAC) through physical barriers separate from the signal lines, and wire them strictly to the designated top-left terminal slots.
Ground the GR terminal with a heavy, low-impedance copper wire (2 mm minimum cross-section) connected directly to the system cabinet earth busbar to block EMI.
Confirm logic compatibility (sink-to-common) for input circuits. Tighten all screw-terminal connections to standard torque limits to prevent contact resistance heating.
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| Country of origin |
Japan
|
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