Yokogawa SNB10D-243/C2UN Safety Node Unit (Rack Mountable Type)

FAQ

• Q1: What is the maximum number of I/O modules supported by SNB10D-243/C2UN?
  A1: The unit supports multiple I/O modules depending on the system configuration, with proper dummy covers installed for unoccupied slots.

• Q2: How is redundancy implemented in the SNB10D-243/C2UN Safety Node Unit?
  A2: Redundancy is achieved via dual power supply modules and dual ESB bus interfaces, ensuring continuous operation in case of component failure.

• Q3: What is the typical power consumption for 24 V DC operation?
  A3: The unit consumes approximately 5.5 A at 24 V DC.

• Q4: Which mounting hardware is required for installation in a 19-inch rack?
  A4: Four M5 screws with insulation bushes are used to secure the unit in a standard 19-inch rack.

• Q5: What type of communication bus does this safety node unit use?
  A5: It communicates via the ESB (Ethernet Safety Bus) protocol, allowing integration into the ProSafe-RS system.

• Q6: Can the SNB10D-243/C2UN operate with a single power supply module?
  A6: While possible for maintenance purposes, full redundancy requires both power supply modules installed.

• Q7: What is the weight and size specification for planning rack space?
  A7: The unit measures 482.6 × 221.5 × 205 mm and weighs 5.9 kg, which should be considered when designing the rack layout.

• Q8: Is the SNB10D-243/C2UN suitable for SIL 3 safety applications?
  A8: Yes, the unit is certified to SIL 3, making it appropriate for high-safety critical systems.

Safety Node Unit SNB10D-243 SNB10D-243/C2UN Yokogawa Yokogawa SNB10D

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