SB401-53

The Yokogawa SB401-53 is an ESB Bus Interface Slave Module designed to provide the slave-side interface for an ESB communication bus in a Yokogawa control system. It is a standard type without explosion protection and includes the ISA Standard G3 option with temperature specification. The S1 style designation is also included in the supplied product identification.

Technical Specifications

Parameter	Specification
Model	SB401-53
Brand	Yokogawa
Product Type	ESB Bus Interface Slave Module
Bus Interface	ESB Bus
Module Type	Slave Module
Protection Type	Standard type, no explosion protection
Environmental Option	ISA Standard G3 with temperature
Style	S1
Weight	0.45 kg

Model Configuration

The SB401-53 ordering code identifies the module type and its specified configuration:

• SB401: ESB Bus Interface Slave Module.
• 5: Standard type without explosion protection.
• 3: ISA Standard G3 option with temperature specification.

These configuration details distinguish the SB401-53 from other possible SB401 ordering variants. The supplied information does not specify additional temperature limits or environmental test values, so these should not be inferred from the G3 designation alone.

ESB Bus Interface Function

The SB401-53 serves as a slave-side interface module on the ESB bus. Its role is associated with the communication connection between the slave-side equipment and the control system architecture. Correct identification of the bus interface type is important when checking the installed hardware configuration and replacement requirements.

The module's standard non-explosion-protected construction should also be considered when verifying its intended installation environment. The G3 option identifies the stated environmental configuration, rather than an explosion protection rating.

Frequently Asked Questions

Q: Is the Yokogawa SB401-53 an ESB bus master or slave module?

A: It is an ESB Bus Interface Slave Module. It should be identified as a slave-side interface when checking the control system hardware configuration.

Q: Does the SB401-53 provide explosion protection?

A: No. The model is specified as a standard type without explosion protection.

Q: What does the suffix 3 indicate in SB401-53?

A: It indicates the ISA Standard G3 option with temperature specification. The exact temperature limits are not included in the supplied product information.

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