Overview
The Yokogawa YCB141-M025, based on the YCB141 cable series, is a coaxial communication cable designed for Vnet or ER Bus connections in CENTUM VP systems. The -M025 suffix indicates a 25 m cable length, consistent with the specified ordering increments of 5 m. The cable uses a 10BASE-2 designation to identify its cable type; however, Yokogawa Vnet specifications differ from standard Ethernet specifications, so the manufacturer-specified cable must be used.
Suffix Breakdown & Model Matrix
| Parameter | Specification |
|---|---|
| Base Model | YCB141 |
| Full Model | YCB141-M025 |
| Cable Length | 25 m |
| Cable Type | Coaxial cable |
| Network Application | Vnet or ER Bus |
| Cable Designation | 10BASE-2 |
| Maximum Specified Length | 185 m |
| Ordering Increment | 5 m |
| Optional Code | /NL – supports CSA Non-Incendive instrumentation |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | YCB141-M025 |
| Brand | Yokogawa |
| Product Type | Vnet or ER Bus Communication Cable |
| Origin | Japan |
| Operating Temp | -20 to 70 deg C |
| Cable Type | Coaxial |
| Connector Type | BNC |
| Minimum Bending Radius | 100 mm |
| Compatible Network | Vnet or ER Bus |
| Maximum Cable Length | 185 m |
Vnet and ER Bus Communication Characteristics
The YCB141 uses coaxial cable construction and BNC connectors for Vnet or ER Bus communication. Although the 10BASE-2 designation identifies the cable type, Yokogawa explicitly states that Vnet specifications differ from standard Ethernet specifications. Therefore, use the specified Yokogawa cable rather than substituting a generic Ethernet coaxial cable based solely on the designation.
The documented operating temperature range is -20 to 70 deg C. The minimum bending radius is 100 mm; maintain this clearance during cable routing to avoid excessive bending.
Frequently Asked Questions
Q: What is the cable length of YCB141-M025?
A: The suffix -M025 indicates a 25 m cable length. The YCB141 series specifies cable lengths in 5 m increments, up to a maximum of 185 m.
Q: Can a standard 10BASE-2 Ethernet cable replace the YCB141?
A: Not solely on the basis of the 10BASE-2 designation. Yokogawa states that Vnet specifications differ from Ethernet specifications and requires the specified cable.
Q: What operating temperature and bending radius apply to this cable?
A: The specified operating temperature range is -20 to 70 deg C, and the minimum bending radius is 100 mm.
Field Installation Guidelines
- Verify the full cable model and required length before installation.
- Confirm that the connected network uses the Yokogawa-specified Vnet or ER Bus cable.
- Check that the BNC connectors match the designated connection points and are securely fitted.
- Maintain a bending radius of at least 100 mm throughout the cable route.
- Keep the cable away from sources of electrical interference where practical, and follow the system manufacturer’s grounding and shielding instructions.
- Do not exceed the specified maximum cable length of 185 m for the applicable cable configuration.
- Confirm that the installation environment remains within -20 to 70 deg C.
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