ANT502-53

The Yokogawa ANT502-53 is an Optical ESB Bus Repeater Slave Module designed to transmit ESB bus communications over optical fiber for distances of up to 5 km. It operates as the slave module in an optical ESB bus connection and is intended for Yokogawa N-IO/FIO control system configurations. The suffix 53 identifies the standard type without explosion protection, with the specified ISA Standard G3 and temperature-range options for maintenance purposes.

Technical Specifications

Parameter	Specification
Model	ANT502-53
Brand	Yokogawa
Product Type	Optical ESB Bus Repeater Slave Module
Base Model	ANT502
Function	ESB bus optical transport
Maximum Transmission Distance	5 km per hop
Optical Connector Type	LC, IEC 61754-20 compliant
Optical Fiber	Single-mode quartz fiber
Number of Optical Fiber Cores	2
Current Consumption	0.5 A
Weight	0.25 kg
Explosion Protection	Standard type without explosion protection
Environmental Options	ISA Standard G3 and temperature range of -20 to 70 deg C, specified for maintenance purposes

Optical ESB Bus Communication

The ANT502 converts the optical ESB bus signal back into the electrical ESB bus interface at the slave end of the link. When paired with the ANT401 Optical ESB Bus Repeater Master Module and connected using compatible optical fiber, the system supports an ESB bus transmission distance of up to 5 km per hop.

The specified optical connection uses two cores of single-mode quartz fiber with LC connectors. The maximum permitted optical loss is 10 dB at 1.3 micrometers under the manufacturer's stated fiber specifications. Actual link suitability depends on the installed fiber and connector losses.

Installation and Connection Requirements

The ANT502 is used as a slave module in an Optical ESB Bus Node Unit or an Optical ESB Bus Repeater Unit. The ESB bus adapter or connector unit is a separate configuration item and must be selected according to the intended bus connection and termination arrangement.

• ESB bus connection: Select the compatible A2EE3A connector unit for the ANT502.
• Bus termination: Use the connector unit with terminator where the installation design requires ESB bus termination.
• Optical link: Verify the two-core single-mode fiber, LC connectors, and optical loss budget.
• System configuration: Confirm the required master/slave arrangement and supported node or repeater unit before replacement.

Frequently Asked Questions

Q: What is the difference between ANT401 and ANT502?

A: ANT401 is the optical ESB bus repeater master module, while ANT502 is the slave module. They work together to extend ESB bus communication over optical fiber for distances of up to 5 km per hop.

Q: Which optical fiber is required for the ANT502-53?

A: The specified link uses two cores of single-mode quartz optical fiber with LC connectors. The maximum transmission distance is 5 km, subject to the specified optical loss limits and compatible system configuration.

Q: Does the ANT502-53 include the ESB bus connector or terminator?

A: The connector unit is specified separately. Select the compatible A2EE3A connector unit according to whether the installation requires a standard ESB bus connection or a termination connection.

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