Description

Yokogawa YNT511D-P42 Optical Bus Repeater Rack

The Yokogawa YNT511D-P42/KT, also cataloged as the YNT511D-P42 Optical Bus Repeater Rack, operates as a dedicated hardware component for extending optical bus communication in CENTUM VP and CENTUM CS distributed control networks.

Hardware Specifications

Parameter	Specification
ModelBrand	Yokogawa YNT511D-P42
ProductType	Optical Bus Repeater Rack
CompatibleSystems	CENTUM VP, CENTUM CS
BusCompatibility	V-net, S3 Bus, RIO Bus
NetworkInterface	Optical Fiber
MaximumTransmissionRange	4 km
RackFormat	19-inch rack-mountable
ModuleCapacity	Up to 13 Optical Repeater modules
PowerSupply	24 VDC
CurrentConsumption	Max 60 mA (base unit)
IsolationRating	1 kV DC
Dimensions (W x H x D)	19.0" x 7.0" x 12.0" (48.3 cm x 17.8 cm x 30.5 cm)
Weight	8 lbs (3.6 kg) without modules
OperatingTemp	-10 degC to +55 degC
StorageTemp	-20 degC to +70 degC
Origin	Japan / Singapore

DCS-Specific Technical Attributes

Channel-to-channel isolation is implemented between Optical ESB Repeater modules to mitigate crosstalk and maintain signal integrity. The optical interface provides galvanic separation, ensuring minimal influence from electromagnetic interference and preserving 4-20 mA HART loop signal accuracy. Cold junction compensation (CJc) is integrated to stabilize temperature-dependent signal variations across fiber links.

Frequently Asked Questions

Q: Does the YNT511D-P42 support hot-swappable repeater modules?
A: No, module insertion or removal must be performed with the power supply isolated to prevent signal disruption.

Q: What is the maximum number of repeater modules that can be installed in the rack?
A: Up to 13 Optical ESB Bus Repeater modules per standard 19-inch rack chassis.

Q: Can the rack operate continuously in an industrial cabinet environment?
A: Yes, the unit is designed to function within -10 degC to +55 degC ambient conditions, with proper ventilation.

Field Installation Guidelines

1. Mount the rack in a standard 19-inch control cabinet using appropriate rack screws and leveling brackets.
2. Ensure all optical fiber connections are clean, secured, and strain-relieved to prevent signal loss.
3. Connect the 24 VDC power supply from the control cabinet, observing polarity and isolation requirements.
4. Route optical fibers to maintain separation from high-voltage or EMI-generating equipment.
5. Verify module seating and confirm all optical link indicators before applying network power.
6. Perform grounding checks for the rack chassis to prevent potential common-mode interference.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems