This document is the operation manual for OMRON SYSMAC mini Programmable Controllers SK20-C�D�-D. It describes the precautions and safety measures for using the product.
This manual describes the installation, wiring, and configuration of the SYSMAC mini SK20-C programmable controller. It includes details on dimensions, power requirements, input/output specifications, and the use of the programming console.
The guide also covers programming basics, advanced ladder‑diagram instructions, monitoring, memory card handling, and troubleshooting procedures. Appendices provide standard model tables, full technical specifications, and programming reference sheets.
| Power supply voltage | 24 VDC |
|---|---|
| Operating voltage range | 20.4 to 26.4 VAC |
| Power consumption | 10 W max. |
| Insulation resistance | 20 MΩ (at 500 VDC) |
| Input voltage | 24 VDC ±10%/–15% |
| Number of inputs | 2 points (1 circuit), 10 points (1 circuit) |
| Number of outputs | 8 points (4 circuits, 2 points each) |
| Relay contact output rating | Resistive loads: 2 A, 250 VAC; 2 A, 24 VDC |
| Dimensions (without cables) | 160 × 50 × 65 mm (W × H × D) |
| Minimum instruction execution time | 0.2 µs |
The SK20-C provides 8 output points arranged as 4 circuits with 2 points each.
The controller can execute an instruction in as little as 0.2 microseconds.
The unit requires a 24 VDC power supply.
Two analog timers are provided with the controller.