SMC EX120‑SPR1‑B

Product Name: PROFIBUS‑DP Serial Interface Unit

Product Description: Fieldbus serial interface unit for SMC valve island systems, enabling PROFIBUS‑DP communication between host PLC and solenoid valve manifolds, supporting up to 16 valve outputs.

Technical Specifications: Supply voltage 24 V DC ±10 % (21.6‑26.4 V DC); maximum 16 outputs; output capacity 2.1 W per output; electronics current consumption max 70 mA without load; load current consumption max 1.4 A; galvanic isolation 50 Veff rated voltage, 500 Veff rated surge voltage.

Category:
Description

Functional Features: PROFIBUS‑DP slave communication; built‑in diagnostic functions for bus fault and supply voltage monitoring; LED indicators for power, run, bus fault and diagnosis; per‑byte micro fuse protection for outputs; negative common output polarity.

Application Scenarios: Pneumatic automation systems, automated production line valve islands, packaging machinery pneumatic control, automotive assembly line solenoid valve control, general industrial pneumatic systems.

Performance Parameters: Minimum slave interval 0.1 ms; operating temperature 0 °C ~ +55 °C (8 valves active), 0 °C ~ +50 °C (16 valves active); ambient humidity 35‑85 %RH non‑condensing; enclosure rating IP20; weight 0.22 kg.

Material Composition: Flame‑retardant plastic housing; gold‑plated electrical contacts; industrial‑grade communication chip; conformal coated internal PCB; metal mounting fixing parts.

Structural Characteristics: Compact plug‑in module structure; front‑facing LED status indicators; side‑mounted bus connector; direct plug‑in connection to valve manifold; DIN rail or manifold mounting compatible.

Working Principle: Receives control commands from PROFIBUS‑DP master station, parses command data and drives corresponding solenoid valve outputs; monitors valve supply voltage and bus communication status, feeds diagnostic information back to the master station via the fieldbus network.

Installation Requirements: Plug onto compatible SMC valve manifold correctly; secure fixing screws to specified torque; connect PROFIBUS cable with proper shielding termination; connect 24 V DC power supply with correct polarity; ensure protective earth connection for EMC performance.

Usage Precautions: Do not exceed maximum output current per channel; ensure power supply voltage stays within rated range; use only SMC specified solenoid valves with surge suppressors; avoid installation in environments with corrosive gas or excessive dust; perform regular inspection of connector contact condition.

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