The E3-S Series is a compact, high-speed EtherCAT distributed I/O system developed by Sense Intelligence for Industry 4.0 applications. Designed for small and medium-sized equipment, it combines high-speed performance, strong output capability, and flexible distributed deployment in a module roughly the size of a cigarette pack.
Its compact design eliminates the need for traditional terminal boards, reducing cabinet space, wiring, installation time, and overall system cost. Each channel supports independent 24 VDC power supply, allowing sensors and actuators to be connected directly at the point of use.
The E3-S Series is optimized for demanding industrial environments and is well suited to semiconductor, new energy, and intelligent manufacturing equipment.
EtherCAT cycle time: 125 μs
Digital I/O refresh rate: up to 10 kHz
Analog I/O refresh rate: up to 2 kHz
Independent 24 VDC channel power supply
DO output: up to 500 mA per channel
Compact, distributed deployment for reduced wiring and installation costs



Interface parameters
| I/O Number of stations | According to the main station |
| Data transmission medium | Ethernet/EtherCAT CAT6 Cable |
| Transmission distance | ≤100m(Station distance) |
| Transmission rate | 100Mb/s |
Technical Parameters
| Configuration method | Through the main station |
| Power supply | 20~30VDC |
| Specifications and Dimensions | 100X70X26.3mm(Wide and deep) |
| Operating Temperature | -10~+60℃ |
| Storage temperature | -20~+75℃ |
| Relative humidity | 95%,No condensation |
| Protection Rating | IP20 |
General
| Rated voltage | 24V DC(±20%) |
| Number of signal points | 8IN/8OUT |
| Signal Type | NPN/PNP |
| Isolation method | Optocoupler isolation |
| Isolation and voltage resistance | 3750V |
Input
| ON Voltage | 14.4 V DC Min |
| OFF Voltage | 9V DC Max |
| Response time | ≤50μs |
| Input current | 7mA Max |
| Single channel power supply | 40mA Max @24V |
Output
| Load type | Resistive load, inductive load, lamp load |
| Single channel rated current | Maximum:500mA |
| Response time | OFF 50μs / ON 50μs |
| Port protection | Overvoltage, overcurrent, reverse, power outage impact |
| Single channel power supply | 500mA Max @24V |
| Full channel power supply | 200mA Max @24V |
General
| Input points | 4IN/4OUT |
| Resolution | 16bit |
| precision | ±0.1% |
| Single channel power supply | 40mA Max @24V |
Input
| Signal voltage (voltage type) | -10V~+10V、0~+10V |
| Signal current (current type) | 0~20mA、4~20mA |
| Signal Type | Differential/Single End |
| Sampling rate | ≥10Kps |
| Input impedance (voltage type) | ≥1MΩ |
| Input impedance (current type) | ≤250Ω |
| Isolation and voltage resistance | DC 1500V |
Output
| Output signal (voltage type) | 0~+5V、0~+10V、-10V~0V |
| Output signal (current type) | 0~20mA、4~20mA |
| Delay time | ≤100μs |
| Load impedance (voltage type) | ≥10KΩ |
| Load impedance (current type) | ≤1KΩ |
| Model | Description |
|---|---|
| E3-S204 | Integrated EtherCAT high-speed IO slave module, 16DO, 10KHz |
| E3-S204E | Integrated EtherCAT IO slave module, 16DO, 1KHz |
| E3-S233-N | Integrated EtherCAT high-speed IO slave module, 8DI 8DO, 10KHz, sensor powered, NPN |
| E3-S233E-N | Integrated EtherCAT IO slave module, 8DI 8DO, 1KHz, sensor powered, NPN |
| E3-S233-P | Integrated EtherCAT high-speed IO slave module, 8DI 8DO, 10KHz, sensor powered, PNP |
| E3-S233E-P | Integrated EtherCAT IO slave module, 8DI 8DO, 1KHz, sensor powered, PNP |
| E3-S240 | Integrated EtherCAT high-speed IO slave module, 16DI, 10KHz, NPN/PNP |
| E3-S240E | Integrated EtherCAT IO slave module, 16DI, 1KHz, NPN/PNP |
| E3-S244 | Integrated EtherCAT high-speed IO slave module, 16DI 16DO, 10KHz, NPN/PNP |
| E3-S244E | Integrated EtherCAT IO slave module, 16DI 16DO, 1KHz, NPN/PNP |
| E3-S302 | Integrated EtherCAT high-speed IO slave module, 4-channel 16 bit, current or voltage output, 2KHz, sensor power supply |
| E3-S302E | Integrated EtherCAT IO slave module, 4-channel 16 bit, current or voltage output, 500Hz |
| E3-S320-I | Integrated EtherCAT high-speed IO slave module, 4-channel 16 bit current acquisition, 2KHz, sensor power supply |
| E3-S320E-I | Integrated EtherCAT IO slave module, 4-channel 16 bit current acquisition, 500Hz |
| E3-S320-V | Integrated EtherCAT high-speed IO slave module, 4-channel 16 bit voltage acquisition, 2KHz, sensor power supply |
| E3-S320E-V | Integrated EtherCAT IO slave module, 4-channel 16 bit voltage acquisition, 500Hz |