SNB10D-243/CU2N Yokogawa Safety Node Unit

Yokogawa SNB10D-243/CU2N ProSafe-RS Safety Node Unit

Yokogawa SNB10D-243/CU2N ProSafe-RS Safety Node Unit

Availability: 20 left in stock

Yokogawa SNB10D-243/CU2N Safety Node Unit The Yokogawa SNB10D-243/CU2N, also cataloged as the SNB10D Safety Node Unit, operates as a dedicated...

SKU: SNB10D-243/C2UN

Manufacturer: Yokogawa
Product No.: SNB10D-243/C2UN
Product Type: Safety Node Units
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 5900g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa SNB10D-243/CU2N Safety Node Unit

The Yokogawa SNB10D-243/CU2N, also cataloged as the SNB10D Safety Node Unit, operates as a dedicated hardware component for safety node backplane extension and I/O module housing within ProSafe-RS Safety Instrumented System networks.

Suffix Breakdown & Model Matrix

Model / Suffix Code	Specification
SNB10D	Safety Node Unit (Rack Mountable Type)
-2	Dual-redundant power supply with software license for node expansion (R3)
-4	24 VDC power supply
-3	ISA Standard G3 conformal coating, temperature range -20 to 70 deg C, no explosion protection
/CU2N	Connector Unit for ESB Bus (Part number S9342FA)

Hardware Specifications

Parameter	Specification
Model	SNB10D-243/CU2N
Brand	Yokogawa
Origin	Japan
Weight	5.9 kg
Dimensions	19-inch rack-mount standard
Operating Temp	-20 to +70 deg C
Power Consumption	Dual 24 VDC bus feeds
Input Voltage	24 VDC
Environmental Protection	ISA Standard G3 conformal coating
System Compatibility	ProSafe-RS Safety Instrumented System (SIS)
Communication Interface	Extended Serial Backplane (ESB) Bus via CU2N (S9342FA)
Mounting Type	19-inch rack mount with four M5 screws

4-20 mA HART Loop Protocol & Channel Isolation

The Yokogawa SNB10D-243/CU2N provides the power distribution backplane and high-speed ESB bus interconnection for safety I/O modules processing 4-20 mA HART analog signals. Integrated channel-to-channel isolation networks prevent field ground loops and voltage surges from compromising node logic processor functions. The dual-redundant 24 VDC power bus interface ensures continuous power feed delivery to loop-powered transmitters, maintaining safety loop integrity during single power rail outages across downstream instrument channels.

Frequently Asked Questions

Q: How is chassis grounding isolation maintained during 19-inch rack installation?

A: Installation requires the inclusion of the factory-supplied insulation bushes placed under the four M5 mounting screws to isolate the unit chassis from cabinet frame ground loops.

Q: Can an individual 24 VDC power module feed be hot-swapped during live process operation?

A: Yes, the dual-redundant power supply architecture permits live removal and replacement of a failed power module without dropping backplane power to operational I/O cards.

Q: What interface hardware establishes connection between this node unit and the main Safety Control Station?

A: The option code /CU2N installs an S9342FA ESB Bus Connector Unit onto the node frame to interface with the primary safety control network cabling.

Field Installation Guidelines

Field technicians must follow standard rack-mounting and electrical grounding isolation procedures:

Insert the four included insulation bushes into the mounting holes on the front panel of the 19-inch rack chassis frame.
Position the SNB10D-243/CU2N inside the cabinet rail and secure it using four M5 screws inserted directly through the insulation bushes.
Wire the dual 24 VDC supply lines to their designated power terminal blocks using properly crimped ring terminals.
Connect the ESB bus interface cables securely to the CU2N connector unit and engage the mechanical locking screws.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.