Omron G9SE-201 DC24 Configurable Dual-Channel Safety Relay

Technical Overview

The Omron G9SE-201 DC24 is an ultra-slim, configurable dual-channel safety relay unit designed for demanding industrial safety applications, including emergency stop circuits, safety door monitoring, and light curtain integration. Housed in a space-saving 17.5mm DIN rail mountable form factor, this safety module offers robust reliability and incorporates push-in, screw-less terminals for highly efficient, tool-free field wiring. Featuring intuitive front-facing diagnostic LEDs for rapid troubleshooting, the unit complies with rigorous international safety standards, including EN ISO 13849-1 PLe/Category 4 and IEC 62061/IEC 61508 SIL3, making it an essential fail-safe component for safeguarding critical machinery and personnel.

Key Features

Dual-channel evaluation suitable for Emergency Stop and door monitoring safety applications.
Ultra-slim 17.5mm width significantly reduces DIN rail space requirements in control panels.
Push-in plus (screw-less) terminal blocks simplify and accelerate field wiring.
Integrated front-facing LED indicators provide clear visualization of safety inputs and outputs for rapid diagnostics.
Conforms to industry-leading safety certifications: EN ISO 13849-1 (PL e, Safety Category 4) and IEC 61508 (SIL 3).
Ultra-fast response time of 15 ms (ON to OFF) ensures critical machine shutdown.
Equipped with 2 Normally Open (NO) safety output contacts and 1 PNP solid-state auxiliary output.

Technical Specification Matrix

Parameter	Value
Rated Supply Voltage	24 VDC
Operating Voltage Range	-15% to +10% of rated supply voltage
Power Consumption	Max 3 W
Safety Output Contacts	2 NO (250 VAC 5 A, 30 VDC 5 A, resistive load)
Auxiliary Output	1 PNP Transistor Output
Response Time (ON to OFF)	Max 15 ms
Operating Time (OFF to ON)	Max 100 ms
Mechanical Durability	5,000,000 operations minimum
Electrical Durability	50,000 operations minimum
Operating Temperature	-10°C to 55°C
IP Rating	IP20
Dimensions (W x H x D)	17.5 mm x 133 mm x 111.6 mm
Safety Category Ratings	EN ISO 13849-1 (PL e / Category 4), IEC 61508 (SIL 3)

Industrial Applications

1. Automated Conveyor Emergency Stop Integration

Integration of the relay into material handling conveyor systems to provide immediate, fail-safe shutdown across distributed control panels when human operators trigger an E-Stop.

Problem Solved

Conveyor networks in automated facilities require rapid system shutdown upon human intervention to prevent injuries. Traditional safety relays consume excessive panel space in local junction boxes. The G9SE-201 solves this by delivering necessary PLe safety in a highly compact 17.5mm footprint.

Emergency Stop CircuitMaterial HandlingDistributed Control PanelsPLe/Category 415 ms Response Time

2. Robotic Work Cell Access Door Interlocking

Monitoring safety gate switches guarding active robotic welding or assembly cells. Opening the door physically breaks the safety circuit, triggering the relay to de-energize motor contactors.

Problem Solved

Ensuring dangerous human-robot interaction is prevented requires constant dual-channel monitoring of physical access gates. This relay pairs directly with dual-channel door interlocks, reliably breaking the 5A output circuit to lock out robotic power while providing clear local LED diagnostics for reset.

Safety Door InterlockMachine GuardingRobotic Work CellDual-Channel MonitoringSIL 3

3. High-Speed Packaging Machine Optical Safeguarding

Connecting the relay to optoelectronic sensors (safety light curtains) on rapid packaging and palletizing lines to immediately stop actuators if the optical field is breached.

Problem Solved

High-speed machinery requires non-contact personnel detection that responds fast enough to eliminate hazards. With a maximum response time of 15 ms, the relay immediately translates the light curtain breach into a power cut, protecting operators from high-speed moving parts.

Light Curtain InterfaceOptoelectronic SafeguardingPackaging AutomationFast Response Shutdown