Yokogawa SNB10D-223/CU2N Safety Node Unit (Rack Mountable Type)

FAQ

• Q1: What is the maximum number of Safety Node Units that can be connected via the ESB bus?
  A1: Up to 13 Safety Node Units can be connected using the SEC402 ESB bus coupler module.

• Q2: Which safety integrity levels does the SNB10D-223/CU2N support?
  A2: The unit supports SIL 2 and SIL 3, meeting high-reliability safety system requirements.

• Q3: What types of power supply redundancy are available for this unit?
  A3: It supports dual-redundant power supply configurations to ensure continuous operation.

• Q4: What is the operating temperature range for this device?
  A4: The unit can operate safely between -20°C and 70°C.

• Q5: How is the SNB10D-223/CU2N mounted in a control rack?
  A5: It is mounted in a standard 19-inch rack using four M5 screws with insulation bushes.

• Q6: Can this unit handle both AC and DC power supplies?
  A6: Yes, it supports 100–120 V AC, 220–240 V AC, and 24 V DC input power.

• Q7: Does the SNB10D-223/CU2N include optical communication modules?
  A7: Yes, it includes optical ESB repeater modules for enhanced bus communication.

• Q8: Is this Safety Node Unit compliant with international safety standards?
  A8: Yes, it is compliant with IEC 61508 standards for functional safety.

Safety Node Unit SNB10D-223 SNB10D-223/CU2N Yokogawa Yokogawa SNB10D

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