Description
1. At-A-Glance Executive Brief
- Brand: Hirschmann (OEM for Yokogawa)
- Model: GRVSW-664FA (MACH104-20TX-FR)
- Part Type: Managed Layer 2 Industrial Ethernet Switch
- System Compatibility: Yokogawa CENTUM DCS / Vnet/IP Control Networks
- Weight: 4.4 kg (Dual AC Redundant Power Configuration)
- Lifecycle Status: Legacy / Active Support via Specialized Supply Channels
2. Technical Introduction
Plant operators running legacy DCS architectures often face catastrophic network downtime when a single commercial-grade switch fails under continuous industrial loads. Sourcing an exact drop-in replacement that meets strict vendor communication protocols without redesigning cabinet layouts remains a persistent maintenance headache. The Hirschmann GRVSW-664FA solves this operational vulnerability by delivering a dedicated Layer 2 managed switch specifically configured for Yokogawa Vnet/IP control networks. Mounted directly in standard 19-inch server racks, it maintains deterministic data traffic across 24 RJ-45 ports and 4 SFP fiber uplink slots, ensuring continuous packet delivery between control domain nodes without latency spikes or configuration mismatches.
3. Core Technical Specifications
| Parameter | Value |
| Brand / OEM Equivalent | Hirschmann / MACH104-20TX-FR |
| Target DCS Architecture | Yokogawa Vnet/IP |
| Switch Type | Layer 2 Managed Industrial Ethernet Switch |
| RJ-45 Copper Ports | 24 Ports (10/100/1000 Mbps) |
| SFP Uplink Ports | 4 Slots |
| Power Supply | AC Dual Redundant (100 to 240 VAC) |
| Power Consumption | 35 W Maximum |
| Enclosure / Mounting | 19-Inch Rack Mount, IP30 Protection |
| Dimensions (WxHxD) | 448 x 44 x 345 mm |
| Weight | 4.4 kg |
| Operating Temperature | 0°C to 50°C |
4. Field Engineer’s Tech Notes
- Dual AC Power Wiring: When swapping this unit in an active cabinet, verify that both AC power feeds (P1 and P2) are terminated cleanly to avoid nuisance front-panel fault relay triggers. The internal monitoring circuit immediately flags a voltage loss on either input line.
- SFP Module Selection: Ensure you retain or source OEM-approved industrial SFP transceivers for the 4 fiber uplink slots. Standard commercial SFP modules often fail under the thermal and electromagnetic stresses typical of heavy industrial control rooms.
5. Adaptive QA & Testing Protocol
Every unit undergoes rigorous bench testing before dispatch to prevent premature field failure. Technicians execute complete port-by-port ping tests across all 24 RJ-45 copper interfaces and verify optical link stability on the 4 SFP slots. Dual power supply inputs are independently tested under simulated load conditions to confirm proper voltage thresholds and relay signal continuity on the fault contact terminal. Complete QA test reports and pre-shipment video verification can be provided upon request to ensure full transparency.
6. Buyer’s FAQ
- Is this unit shipped with factory defaults or an existing configuration?Units are cleared to factory default settings unless your engineering team supplies a specific backup file for pre-loading prior to dispatch.
- What warranty is included with this hardware?All units come with a standard 1-year replacement warranty covering hardware defects from the date of purchase.
- Does this switch require a specific firmware version for Vnet/IP integration?It matches standard OEM firmware specifications for Yokogawa Vnet/IP environments, allowing drop-in installation without complex re-flashing.
