Part of the Omron CP-Series Compact PLCs series — see the full model table, lifecycle status and replacement parts.
Omron CP1E-E20DR-A — 20 I/O PLC, 12 In 8 Relay
SKU: CP1E-E20DR-AUSD 55.00
CP1E-E basic-series compact PLC with 20 I/O (12 inputs + 8 relay outputs), 100 to 240 VAC supply, 2K-step program memory
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Product Overview
The Omron CP1E-E20DR-A is the 20-I/O point member of the CP1E-E 'basic-model' CP1E family — a compact 86 × 110 × 95 mm DIN-rail-mounting PLC purpose-built for small, standalone machine control where advanced motion or networking features aren't needed. manufactured by Omron Corporation. Hengyixin Automation stocks this controller in Xiamen and ships within 3-5 business days to most Asian, European, and North American ports.
The point breakdown: 12 × 24 VDC inputs (COM common-group) and 8 × mechanical relay outputs rated 2 A at 250 VAC. The 'A' suffix at the end of the part number specifies the 100 to 240 VAC power supply (the 'D' suffix would be 24 VDC).
The supported instruction set covers basic ladder logic, timers/counters (256 of each as a default), comparison, arithmetic, increment/decrement, BCD conversions, and subroutine call — adequate for any sequential control application that doesn't need floating-point math or PID loops (use a CP1L-EM or CP1H for PID).
Key Features
- 2K-step program memory, 2K-word data memory, 0.8 ms typical scan time
- Built-in 0.3 A sensor power supply 24 VDC for input field devices
- 100 to 240 VAC supply with built-in 24 VDC 0.3 A sensor power output
- 20 I/O total — 12 × 24 VDC inputs and 8 × 2 A mechanical relay outputs
- SKU: CP1E-E20DR-A
- Series: CP1E-E (basic-model CP1E)
- Voltage: 100 TO 240 VAC
- I/O: 20 I/O
Best-Fit Applications
- Standalone machine retrofits replacing older CPM1A-20CDR-A with modern USB programming
- Building automation — HVAC damper control, lighting control, pump sequencing with the 2 A relay outputs
- Small packaging machines where 20 I/O is plenty — 12 sensors and 8 outputs for solenoid and indicator control
Buying Checklist
- Pick the CP1E-E20SDR-A for built-in USB B programming port
- Pick the CP1E-E20DR-A for the cheapest 20-I/O CP1E with AC supply
- Pick the CP1H-X40DT1-D when high-speed counter or pulse output is needed
Technical Specifications
| Model | CP1E-E20DR-A |
|---|---|
| Series | CP1E-E (basic-model CP1E) |
| Power Supply | 100 to 240 VAC, 50/60 Hz (select 'A' for AC or 'D' for 24 VDC) |
| Operating Voltage Range | 85 to 110 % of rated supply voltage |
| Power Consumption | ≤ 30 VA at 240 VAC |
| Built-in 24 VDC Sensor Supply | 0.3 A max, isolated from internal 24 VDC |
| Total I/O Points | 20 (12 inputs + 8 outputs) |
| Digital Inputs | 12 × 24 VDC, PNP or NPN via COM polarity |
| Input ON Voltage | ≥ 17.0 VDC |
| Input OFF Voltage | ≤ 5.0 VDC |
| Input Response Time | 0 to 32 ms (filter settable, default 8 ms) |
| Digital Outputs | 8 × mechanical relay, SPST-N/O form A |
| Output Rating | 2 A / 250 VAC or 2 A / 24 VDC resistive, 8 A per common |
| Output Mechanical Life | ≥ 20 million operations (no load) |
| Output Electrical Life | 100,000 operations at rated resistive load |
FAQ for CP1E-E20DR-A
What's the difference between CP1E-E20DR-A and CP1E-N20DR-A?
Same 20 I/O and same AC supply, but the N-model has additional capability: 8K-step program memory (vs 2K on E), built-in Ethernet port for Modbus TCP / Host Link (E-model has no Ethernet), built-in RS-232C and RS-485 ports (E-model has USB only), 16-bit analog slider switches on the front panel (E-model has none), and an option board slot for RS-422 / RS-485 expansion.
Can the CP1E-E20DR-A host CP1W expansion units?
Yes — the CP1E-E supports up to 3 CP1W expansion units via the CP1W-CN811 cable (80 mm). For a 20-point CP1E-E20DR-A the I/O table ceiling is 160 points, so you can add 3 × CP1W-40EDR (40 points each) for a total of 140 I/O, or any combination of digital, analog (CP1W-AD042 / DA021), and communication options (CP1W-CIF11 / CIF12-V1 / ME05M) as long as the total stays under 160 points. Configure expansion via CX-Programmer's I/O Table Settings or Sysmac Studio's EtherCAT/Sysmac editor.
How do you program the CP1E-E20DR-A?
Connect a USB cable (Type A to mini-B) between the PC and the CP1E-E20DR-A's mini-B port. Launch CX-Programmer 9.6 (or later), create a new project selecting CP1E as the CPU type, set up the I/O table from the PLC, and you can write/read the ladder program directly. Sysmac Studio 1.0 or later also supports the CP1E (select 'CP1E' as the device family in the controller configuration).
Is the CP1E-E20DR-A discontinued?
No — the CP1E family is current production as of 2025 with no published EOL for the 20-point E variants. However, the direct predecessor CPM1A-20CDR-A was discontinued in 2020 and the CP1E is its supported migration path. For newer designs the CP1L-EM series adds Ethernet and battery-less operation as a higher-spec alternative.
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