SMC EX120-SDN1 DeviceNet 16-Point Input/Output 24VDC

Fieldbus interface unit that integrates pneumatic valve control and I/O into a DeviceNet network. Enables centralized control of up to 16 solenoid valves with robust electrical and environmental specifications.

Specifications:
Model: EX120‑SDN1
Protocol: DeviceNet™ (Volume I & II), Group 2 Only Server
Device Type: 16 I/O points (16 inputs + 16 outputs)
Vendor ID: 7 (SMC Corp) • Product Code: 288
Bus Power: 11–25 VDC, ≤70 mA
Valve Power: 24 VDC ±10% (≤1.5 A depending on valve load)
Output Type: NPN (sink, positive common)
Load: Solenoid valves ≤24 VDC, ≤2.1 W with surge suppression
Error Behavior: CLEAR on comm failure (configurable)
Network Speed: 125 / 250 / 500 kbps (switch-selectable)
MAC ID: Adjustable 0–63 via DIP-switch
Topology: T‑branch/multidrop with 121 Ω terminators at trunk ends
Bus Distances: up to 500 m (@125 kbps), 250 m (@250), 100 m (@500)
Drop Length: maximum 6 m per stub
Branch Total: ≤156 m (@125 kbps), ≤78 m (@250), ≤39 m (@500)
Ambient Temp: 0–55 °C (≤8 valves ON); 0–50 °C (all 16 ON)
Storage Temp: –20–60 °C
Humidity: 35–85 % RH (non-condensing)
Vibration: ≥50 m/s² (JIS C 0911)
Shock: ≥100 m/s² (JIS C 0912)
Enclosure: IP20 (DIN-rail mounting)
Isolation Withstand: 1000 VAC for 1 min; Insulation ≥2 MΩ @500 VDC
Weight: ≈110 g
Indicators: LEDs for PWR, COMM status, error, TX/RX
Connectors:
• DeviceNet: Phoenix Contact MSTB2.5, AWG24–12, torque 0.5–0.6 Nm
• Valve Power: Phoenix Contact MSTB2.2, torque 0.5–0.6 Nm
Mounting: DIN-rail via integrated bracket
EDS File: EX120‑SDN1.eds for seamless DeviceNet integration
Certifications: CE, RoHS, compliant with ISO 4414, IEC 60204‑1, ISO 10218
Accessories: G1/2 cable glands, waterproof plugs (AXT100‑B04A for unused ports) Please review pictures carefully and let us know if you have any questions!