Product Description
RELCOM (MTL) F802, Redundant Foundation Fieldbus H1 Power System. It supplies galvanically‑isolated power, signal conditioning and built‑in termination for up to 8 Foundation Fieldbus H1 (31.25 kbps) segments, widely deployed with DeltaV and other DCS platforms. OEM discontinued, legacy spare for process plants.
Supports hot‑swap dual‑module redundancy (active‑standby / load‑sharing). Front‑panel LED diagnostics: 8‑segment status plus common Alarm indicator. Hazardous‑location rated for Class I Div 2 / Zone 2 installations. Wall‑mount cabinet installation, not DIN‑rail. Available supplies: new surplus stock and fully‑tested refurbished units. No drop‑in replacement; same‑part‑number required for maintenance.
Technical Specifications
| Item | Specification |
|---|---|
| Full Model | F802 |
| Product Type | Redundant FF‑H1 Fieldbus Power Supply Unit |
| Fieldbus | Foundation Fieldbus H1 @31.25 kbps |
| Segments | 8 independent H1 segments |
| Power Input | 21‑35 VDC, max 7A |
| Output per Segment | max 580 mA |
| Galvanic Isolation | 1500 V isolation |
| Redundancy | Dual‑module hot‑standby, load sharing |
| Diagnostics | 8‑segment LED status, common Alarm LED |
| Hazardous‑area Cert | Class I Div 2 ABCD T4; ATEX Zone 2 Ex na IIC T4 |
| Mounting | Cabinet wall‑mount screw fixing |
| Operating Temperature | -40℃ ~ +65℃ (+50℃ @60% load) |
| Storage Temperature | -40℃ ~ +85℃ |
| Unit Weight | Approx. 1.52 kg |
| Dimensions | 152 × 140 × 84 mm |
| Country of Origin | United Kingdom (EU) |
Product Application
- Petro‑chemical, refinery, offshore platforms, FF‑H1 DCS systems such as DeltaV.
- Isolated power and signal conditioning for up to 8‑segment Foundation Fieldbus instrument networks.
- Fieldbus power with fault tolerance for hazardous classified areas.
- Spare‑part replacement and maintenance for legacy FF‑H1 installations.
Related Series Models
‑ F801: Single‑segment fieldbus power module
‑ F892: Rack base for F802 assembly
‑ F850: New‑generation FF power supply (functional replacement, non‑form‑fit)
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