Omron E3ZS Safety Sensor
The Omron E3ZS Safety Sensor is designed with a slim, space-saving profile while maintaining robust functionality for high-level protection in industrial environments. Featuring clearly defined sensing zones, wiring terminals, and mounting guides, it enables quick installation and reliable integration into safety systems. Built for precision and durability, the sensor offers advanced finger and hand detection, superior ambient light immunity, and dependable performance even in challenging conditions. Equipped with multiple output configurations, status indicators, and fail-safe circuitry, it ensures maximum operational safety and flexibility across diverse applications. Each element—from the protective housing and alignment indicators to the quick-connect wiring and safety outputs—is engineered for optimal usability, efficiency, and long-term serviceability.
Categories:
Omron Safety Components- Human Body Detection (Type 2): Designed for use with certified safety controllers in compliance with EN ISO13849-1.
- Robust Through-Beam Sensor: Offers a sensing distance of 0.2 to 3 meters for reliable detection.
- Durable Construction: Built with a Polybutylene Terephthalate (PBT) case and PVC-sheathed cable for industrial environments.
- PNP Output: Ensures compatibility with a wide range of control systems.
- Mutual Interference Prevention: Optional filters with 90° polarization offset eliminate cross-talk between adjacent sensors.
- Easy Installation: Comes with mounting bracket options for quick and secure setup.
| Model | E3ZS-T81A | |
|---|---|---|
| Sensor type | Through-beam models | |
| Safety category | See Applicable standards. | |
| Standard sensing object | Opaque object: 18 mm in diameter or greater | |
| Lens diameter | Diameter 6.7 mm/diameter 9 mm | |
| Sensing distance | 0.2 to 3 m | |
| Response time (under stable light
incident condition) |
1.0 ms (E3ZS only) | |
| Startup waiting time | 100 ms | |
| Power supply voltage (Vs) | 12 to 24 VDC±10% (ripple p-p 10% max.) *1 | |
| Current consumption (no load) | Emitter: 15 mA max.
Receiver: 20 mA max. |
|
| Light source (emitted wavelength) | Red LED (660 nm) | |
| Effective aperture angle (EAA) | ±5° (at 3 m) | |
| Control output | PNP transistor output, load current: 100 mA max.
OFF current: 0.5 mA max. Minimum current used: 1 mA Residual voltage: 1 V max. (when load current is less than 10 mA) Residual voltage: 2 V max. (when load current is between 10 mA and 100 mA) (except for voltage drop due to cable extension) |
|
| Output operation mode | Light-ON * | |
| Input voltage | 22.5 to 24 VDC: Emitter OFF (source current: 3 mA max.)
Open or 0 to 2.5 V: Emitter ON (leakage current: 0.1 mA max.) |
|
| Indicators | Emitter: Emitting (orange)
Receiver: Operation (orange), Stable (green) |
|
| Test functions | External test (light emission stop function by test input) | |
| Connection method | Pre-wired cable (2 m) | |
| Protective circuits | Power supply/output reverse connection protection, load short-circuit protection | |
| Ambient temperature | Operating: -10 to 55°C
Storage: -10 to 70°C (with no icing or condensation) |
|
| Ambient humidity | Operating: 35% to 85%, storage: 35% to 95% (with no icing or condensation) | |
| Ambient operating light intensity | Incandescent lamp: 3000 lx max (light intensity on the receiver surface).
Sunlight: 10,000 lx max (light intensity on the receiver surface). |
|
| Insulation resistance | 20 MΩ min. (at 500 VDC) | |
| Dielectric strength | 1000 VAC 50/60 Hz 1 min | |
| Degree of protection | IP67 (IEC standard) | |
| Vibration
resistance |
Operating limit | 5 to 150 Hz, 7 mm double amplitude/ 1 G acceleration, 10 sweeps for each X, Y,
and Z directions (IEC TR 60721-4-3 Class 3M4) |
| Durability | 10 to 55 Hz, 1.5 mm double amplitude, 2 hours for each X, Y and Z directions | |
| Shock
resistance |
Operating limit | 15 G acceleration, 6 ms pulse duration, 100 time for each direction of 3 mutually
perpendicular axes (600 in total) (IEC TR 60721-4-3 Class 3M4) |
| Durability | 500 m/s2 (approx. 50 G), 3 times for each X, Y, and Z directions | |
| Material | Case: Polybutylene terephthalate | |
| Weight (packed state) | Approx. 120 g (for one set including 2-m cable) | |
| Accessories | Operation manual | |
| Applicable
standards |
Sensor only | IEC 60947-5-3 (PDDB)
EN ISO13849-1 (PLc/Safety Category 1) |
| Sensor connected to
safety controller |
IEC (EN) 61496-1 Type2 ESPE
IEC (EN) 61496-2 Type2 AOPD EN ISO13849-1 (PLc/Safety Category 2) |
|
Sensors
| Sensor
method |
Appearance | Case
material |
Sheath
material |
Connection method | Sensing
distance |
Output | Model |
|---|---|---|---|---|---|---|---|
| Through-
beam |
|
Polybutylene
terephthalate |
PVC | Pre-wired cable (2 m) | 0.2 to 3 m
(Red light) |
PNP | E3ZS-T81A |
Controller (Safety Controller G9SP Series)
| Name | No. of I/O points | Unit version | Model | |||
|---|---|---|---|---|---|---|
| Safety
inputs |
Test
outputs |
Safety outputs | Standard
outputs |
|||
| Safety Controller | 10 | 4 | Semiconductor outputs: 4 | 4 | Ver.2.0 | G9SP-N10S |
| 10 | 6 | Semiconductor outputs: 16 | --- | G9SP-N10D | ||
| 20 | 6 | Semiconductor outputs: 8 | --- | G9SP-N20S | ||
NX-series Safety Control Units
| Unit type | Specifications | Unit
version |
Model | |||
|---|---|---|---|---|---|---|
| Maximum number of
safety I/O points |
Program
capacity |
Number of safety
master connections |
I/O refreshing
method |
|||
| Safety CPU
Unit |
256 points | 512 KB | 32 | Free-Run refreshing | Ver.1.1 | NX-SL3300 |
| 1024 points | 2048 KB | 128 | Free-Run refreshing | NX-SL3500 | ||
Note: For details, refer to NX-series Safety Controller (EtherCAT System) Catalog (Cat. No. F101) or NX-series Safety Controller Stand-alone System brochure (Cat. No. F100).
Safety Input Units
| Unit type | Specifications | Unit
version |
Model | |||||
|---|---|---|---|---|---|---|---|---|
| Number of
safety input points |
Number of
test output points |
Internal
I/O common |
Rated
input voltage |
Number of
safety slave connections |
I/O
refreshing method |
|||
| Safety
Input Units |
4 points | 2 points | Sinking
inputs (PNP) |
24 VDC | 1 | Free-Run
refreshing |
Ver.1.1 | NX-SIH400 |
Note: For details, refer to NX-series Safety Controller (EtherCAT System) Catalog (Cat. No. F101) or NX-series Safety Controller Stand-alone System brochure (Cat. No. F100).
|
Catalog Name
|
Catalog Number[size]
|
Last Update
|
|---|---|---|
| E3ZS Data Sheet | [1820KB] | Jul 08, 2024 |
Applications
- Used for personnel protection against mechanical hazards in automated environments.
- Ideal for machine guarding in industrial production lines.
- Supports integration with certified safety controllers (e.g., G9SP or NX-Series) for EN ISO13849-1 compliance.
- Applicable in semi-automated machinery and robotic systems where human detection is essential.
- Suitable for presence sensing in factory automation and process safety zones.
Why Choose
- Reliable Safety Compliance: Designed to meet PLc/Safety Category 1 (EN ISO13849-1) when used with appropriate safety controllers.
- Compact and Durable Design: Robust polybutylene terephthalate casing and PVC sheathed cables ensure long-lasting operation in industrial environments.
- Easy Integration: Compatible with Omron’s G9SP and NX-series Safety Controllers for seamless system setup.
- Red Light Detection: Effective through-beam sensing with 0.2 to 3 m range ensures precise detection across guarded zones.
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