Omron G9SP-N20S — Safety Controller, 20 in / 8 out
SKU: G9SP-N20SUSD 185.00
G9SP standalone programmable safety controller, 20 in / 8 out, 24 VDC, PLe / SIL 3, function-block programming via G9SP Configurator.
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Product Overview
The Omron G9SP-N20S is a standalone programmable safety controller for mid-size machines that need more than a hard-wired safety relay can deliver — typically several E-stop buttons, guard-door switches, safety light curtains, and mode-select switches wired through custom AND / OR / muting logic. manufactured by Omron Corporation. Hengyixin Automation stocks this safety device in Xiamen and ships within 3-5 business days; safety-rated components ship with a batch-trace certificate.
It runs on 24 VDC, takes 20 safety inputs and provides 8 PNP safety transistor outputs plus 6 test outputs. Logic is configured with the G9SP Configurator software using certified function blocks — not a full PLC scan — so programming is closer to wiring a ladder of safety relays than to writing structured text.
For purely hard-wired circuits with no custom logic, a G9SA-301 or G9SB-200-B is more cost-effective than the G9SP.
Key Features
- 24 VDC supply; operating temperature 0 to +55 °C
- 20 PNP safety inputs
- G9SP standalone programmable safety controller
- 8 PNP safety transistor outputs
- SKU: G9SP-N20S
- Series: G9SP standalone safety controller
- Voltage: 24 VDC
Best-Fit Applications
- Press with two-hand control and a guard door that needs separate mode-select paths for setup versus run
- Palletiser with muting logic that lets product pass through a light curtain without tripping
- Robotic work cell with two safety zones that share contactors but need independent reset behaviour
Buying Checklist
- Pick an NX-SL Safety CPU + NX-SOD400 output pair when the system needs EtherCAT safety or more than 20 I/O.
- Pick a G9SA-301 (45 mm hard-wired) for a single E-stop and three contactors — cheaper and simpler than a G9SP.
- Pick G9SP-N20S when you need custom logic (muting, mode select, EDM feedback) that a single G9SA / G9SE relay cannot express.
Technical Specifications
| Model | G9SP-N20S |
|---|---|
| Series | G9SP standalone safety controller |
| Safety Inputs | 20 × PNP (dual-channel capable) |
| Safety Outputs | 8 × PNP transistor sourcing |
| Test / Pulse Outputs | 6 × PNP open-collector |
| Programming | G9SP Configurator (function-block library); memory-card cassette for transfer |
| Power Supply | 24 VDC (21.6 to 26.4 VDC) |
| Ethernet | Optional via CP1W-CIF41 board (FINS/UDP) |
| Safety Integrity | PLe / Cat 4 (ISO 13849-1); SIL 3 (IEC 61508) |
| Mounting | 35 mm DIN rail (TH35-7.5 or TH35-15 per IEC 60715) |
| Operating Temperature | 0 to +55 °C |
| Approvals | UL 508, CSA C22.2 No.142, EN 61131-2, TÜV (BG) |
FAQ for G9SP-N20S
What is the difference between G9SP-N20S and a G9SA-301?
G9SA-301 is a hard-wired safety relay: 3 NO safety contacts + 1 NC aux, no programming needed. G9SP-N20S is a programmable controller with 20 inputs and 8 outputs that you wire through certified function blocks. Pick G9SA for a single E-stop / guard-door circuit. Pick G9SP when you need muting, mode switching, or interlocking between several zones that a hard-wired relay cannot handle.
Does the G9SP-N20S have built-in Ethernet?
No. The G9SP-N20S does not have built-in Ethernet. To add Ethernet for FINS/UDP monitoring or remote reset, mount a CP1W-CIF41 option board (ver. 2.2 or later). Without it, the controller runs as a standalone device and is monitored only via front-panel LEDs and the configuration software during commissioning.
What safety level does the G9SP-N20S reach?
Up to PLe per ISO 13849-1 and SIL 3 per IEC 61508, depending on how the I/O and outputs are wired. Dual-channel inputs and redundant outputs monitored by EDM feedback give the highest level; single-channel wiring caps at lower categories. The certified function blocks in G9SP Configurator enforce the supported configurations, so the safety integrity is maintained as long as the wiring and external wiring follow the manual.
Do I need to leave a PC connected at runtime?
No. Once the program is loaded from the memory card cassette, the G9SP-N20S runs on its own. The PC and G9SP Configurator are only needed for commissioning, diagnostics, and program updates. The memory card also lets you clone a verified program onto a replacement unit without a PC.
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