OMRON CPM1A-20CDR-A-V1 Programmable Logic Controller | Replacement, Equivalent & Selection Guide
The OMRON CPM1A-20CDR-A-V1 is a compact, high-reliability programmable logic controller (PLC) from OMRON’s CPM1A series. Designed for small-to-medium automation tasks, it delivers robust relay output control with AC power supply input — a proven workhorse in industrial environments worldwide. This page provides full technical specifications, compatible replacement models, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
- Model: CPM1A-20CDR-A-V1
- Brand: OMRON
- Series: CPM1A
- I/O Points: 20 (12 Inputs / 8 Outputs)
- Input Type: DC 24V Sink/Source
- Output Type: Relay (R)
- Power Supply: AC 100–240V (A)
- Program Capacity: 2,048 instructions
- Data Memory: 1,024 words
- Communication: Peripheral port (RS-232C optional)
- Dimensions (W×H×D): 150 × 90 × 80 mm (approx.)
- Weight: Approx. 1,140 g
- Operating Temperature: 0–55°C
- Humidity: 10–90% RH (non-condensing)
- Protection Rating: IP20
- Certifications: CE, UL, cUL
- Country of Origin: Japan
Compatible Replacement & Equivalent Models
The following models are commonly evaluated as direct or functional replacements for the CPM1A-20CDR-A-V1. Always verify I/O count, output type, and power supply before substitution.
- OMRON CPM1A-20CDR-A — Previous revision; functionally identical, no V1 hardware update
- OMRON CP1E-N20DR-A — Upgraded successor; same 20-point relay/AC config, USB programming port, enhanced instruction set
- OMRON CP1L-L20DR-A — Mid-range upgrade; 20 I/O, relay output, AC supply, built-in Ethernet option
- OMRON CQM1H-CPU51 — Higher-end modular alternative for expanded I/O requirements
- Siemens LOGO! 230RCE — Cross-brand compact relay controller; suitable for simple logic tasks
- Mitsubishi FX1S-20MR-001 — Cross-brand equivalent; 20-point relay output, AC power, similar footprint
Note: Cross-brand replacements require program re-engineering. Consult Konmask technical support for migration assistance.
Why Choose the Original Model
- Proven Reliability: CPM1A series has 20+ years of field-proven performance in global manufacturing
- Drop-in Compatibility: Identical wiring footprint and instruction set — no reprogramming required when replacing same-revision units
- Wide Ecosystem: Compatible with OMRON CX-Programmer, CX-One suite, and extensive peripheral modules
- Relay Output Durability: Mechanical relay outputs rated for 150,000 operations — ideal for inductive loads
- AC Power Flexibility: Accepts 100–240VAC without manual switching — suitable for global deployment
Typical Applications
- Conveyor and material handling control
- Packaging machine sequencing
- HVAC and building automation
- Pump and motor starter control panels
- Food & beverage processing lines
- Small injection molding machine control
- OEM equipment with relay-based output requirements
System Compatibility
- Programming Software: OMRON CX-Programmer (v9.x+), CX-One
- Expansion Modules: CPM1A-series I/O expansion units (up to 3 units, max 60 I/O total)
- Communication Options: CPM1-CIF01 RS-232C adapter, CPM1-CIF11 RS-422 adapter
- HMI Compatibility: OMRON NT-series, NB-series; third-party HMIs via RS-232C
- Network: CompoBus/S (with optional SRT2 slave unit)
Selection Guide
Use this guide to confirm the CPM1A-20CDR-A-V1 is the right fit — or to identify the best alternative:
- Need <20 I/O + relay + AC? → CPM1A-20CDR-A-V1 ✓ (this model)
- Need USB programming + modern instruction set? → Upgrade to CP1E-N20DR-A
- Need Ethernet/IP connectivity? → Consider CP1L-L20DR-A or CP1H series
- Need transistor (NPN/PNP) output? → CPM1A-20CDT-A (NPN) or CPM1A-20CDT1-A (PNP)
- Need DC power supply? → CPM1A-20CDR-D (DC 24V supply variant)
- Need >20 I/O on same base unit? → CPM1A-30CDR-A (30-point) or CPM1A-40CDR-A (40-point)
- Budget-sensitive cross-brand? → Mitsubishi FX1S-20MR-001 (requires program rewrite)
Quality Assurance & Sourcing
- Authenticity: All units sourced from authorized distributors or verified surplus channels with traceability documentation
- Inspection: Each unit undergoes visual inspection, label verification, and functional power-on testing before shipment
- Warranty: 12-month warranty against manufacturing defects
- Condition: New, refurbished, and tested-used options available — specify at inquiry
- Lead Time: In-stock units ship within 1–3 business days; sourced units 5–15 business days
How to Order
- Confirm model number: CPM1A-20CDR-A-V1
- Specify quantity and required condition (new / refurbished / tested-used)
- Contact us via email or phone for a formal quotation
- Receive proforma invoice → arrange payment → shipment with tracking
- DHL / FedEx / UPS express available; sea freight for bulk orders
📧 support@konmask.com | 📞 +0086 19859288691
Replacement & Compatibility FAQ
Q: Is CPM1A-20CDR-A-V1 the same as CPM1A-20CDR-A?
A: Yes, the V1 suffix denotes a minor hardware revision. The instruction set, wiring, and programming are fully compatible.
Q: Can I replace CPM1A-20CDR-A-V1 with CP1E-N20DR-A without reprogramming?
A: The CP1E uses the same ladder logic base but has an expanded instruction set. Most CPM1A programs can be imported via CX-Programmer with minor adjustments.
Q: Does this unit support Modbus RTU?
A: Not natively. Modbus RTU requires an optional serial communication board or a CP1-series upgrade.
Q: What is the maximum expansion I/O for CPM1A-20CDR-A-V1?
A: Up to 3 expansion units can be connected, bringing the maximum to 60 I/O points total.
Q: Can I use third-party programming cables?
A: Yes, USB-to-peripheral port adapters compatible with CX-Programmer are widely available and supported.
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