← Back to KB navigation
Equipment VFD-101
FM communication_loss
ISO 14224 mode Communication loss Communication loss
Source synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)
与 DCS/SIS 通讯中断
VFD-101 · Variable Frequency Drive (VFD)
Related equipment → VFD-101
0.82Source conf.
—Evidence conf.
Communication lossISO 14224 mode
1Failure Mechanism
Function:接收设定/联锁指令并反馈状态
Failure cause:现场总线/光纤链路中断或协议超时
Damage mechanism：现场总线/光纤链路中断或协议超时，控制失联导致运行失控或安全联锁失效
2Source Basis (where this FM comes from)
synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类)
Source confidence 0.82: this FM is derived from the ontology KB and cross-validated by synthetic + standards-based engineering estimate (ISO 14224 / IEC 61800 / IEEE C57 框架归类).
3Evidence Chain (supporting basis)
This FM has no offline curated evidence text; it is derived from the ontology KB and cross-validated by the listed standard clauses and related accident investigations.
Governing standards (evidence)：std:IEC 61800-7 — Adjustable speed electrical power drive systems — Generic interface and use of profiles · 机理级工程估计，非实测；引用 governing standard 作为分类出处std:IEC 61158 — Industrial communication networks — Fieldbus specifications · 机理级工程估计，非实测；引用 governing standard 作为分类出处
4Related Real Accidents (traceable to accident cards)
This FM is recorded in 2 real accident investigation(s); tap the report no. to open the corresponding accident lesson card.
5Applicable Standards & Clauses
IEC 61800-7IEC 61158
No separate clause reference.
6Derived Analysis (seeded from this FM)
7/2/3FMEA Sev/Occ/Det
0.05RBI λ
0.8Monitor pdet
12 月Insp. int.
Current tasks:通讯健康诊断/链路冗余 | 协议超时监测
RCFA incident:与 DCS/SIS 通讯中断：现场总线/光纤链路中断或协议超时，后果类型 Operational/Safety，严重度 7
7RCM Maintenance Decision (strategy landing)
PMScheduled (Proactive) Maintenance
Recommended task标定/零点-跨度校验 + SIL Proof test + 阀门行程试验 + 变更管理
Suggested intervalHigh risk 1-3 mo / Medium 6-12 mo / Low risk at turnaround (by API 581 RBI risk ranking)
Decision basis机理类别=instrument
Governing standardsGB/T 21109IEC 61511ISA 84
⚠ This decision is engineering-inferred by RCM logic from the damage mechanism / root cause / failure cause — it is not derived from measured site history. Confirm with the equipment owner and process before execution.
⚠ 本卡技术正文（功能 / 致因 / 损伤机理 / RCFA 叙事）保留中文原文——依可信 AI 红线，自由技术文本不自动机翻、不编造英文译文。UI、设备类型、FM 名、ISO 码、标准号均为英文。