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Eaton MTL8000 Series 8922-RB-IS Railbus Bus Isolation Module
| Brand: Eaton MTL |
| Item NO: 8922‑RB‑IS |
| Effect: Perform current isolation on the Railbus bus |
| Condition: In stock, brand new/Used |
| Warranty: 365 days |
| Payment:T/T 50% deposit, 50% balance |
| www.szcxdcs.com |
+86 15359298293
Eaton MTL8000 Series 8922-RB-IS Railbus Bus Isolation Module
8922-RB-IS is an Eaton (MTL) MTL8000 series Railbus bus isolation module used for PAC8000 control system backplane bus, achieving electrical isolation between safety zone bus and intrinsic safety (IS) fieldbus. 8922-RB-IS is used for system architecture with intrinsic safety I/O modules, isolating hazardous fault voltages, protecting intrinsic safety side field wiring and I/O cards, and is widely used in explosion-proof hazardous conditions such as chemical and petrochemical industries. It is used as a system supporting spare part.
Eaton MTL8000 Series 8922-RB-IS Railbus Bus Isolation Module
Product function
1. Bus electrical isolation: Perform current isolation on the Railbus bus to block the intrusion of fault voltage from the safe zone side into the intrinsic safety circuit, avoiding the failure of the explosion-proof performance of the intrinsic safety field circuit.
2. Bus segmentation isolation: Divide the backplane bus into two segments: the safety zone (2/2) and the intrinsic safety zone (2/1). The intrinsic safety I/O module must be arranged on the isolated bus segment.
3. Transparent signal forwarding: Isolate and fully forward bus data communication to ensure normal data exchange between the controller and the intrinsic safety side I/O module, without interrupting measurement point acquisition and output control.
4. Intrinsic safety circuit protection: protects intrinsic safety I/O modules and on-site explosion-proof instruments, prevents surge and overvoltage damage to on-site intrinsic safety equipment, and meets safety regulations for explosion-proof areas.
5. System architecture matching: All PAC8000 systems equipped with intrinsic safety I/O modules must be equipped with this isolation module for project construction and replacement of faulty spare parts.
Parameter Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 8922‑RB‑IS |
| Manufacturer | Eaton MTL |
| Product Type | Railbus Isolator |
| Applicable System | PAC8000 / MTL8000 Series |
| Bus Segment | Safe‑area 2/2 side, IS 2/1 side |
| Safe Area Railbus Current | 50 mA Max @12 V DC |
| IS Railbus Current | 60 mA Max @12 V DC |
| Max Power Dissipation | 1.2 W |
| Isolation Voltage | 2500 V RMS |
| Node Address Range | 1‑32 / 1‑64 configurable |
| Installation Mode | DIN rail mount on carrier base |
| Mechanical Dimension | 110 × 160 × 42 mm |
| Net Weight | 0.345 kg |
| Operating Temperature | ‑25℃ ~ +70℃ |
| Protection Class | IP20 |
| Certification | ATEX, IECEx, Class I Div2, Zone2 IIC T4 |
| Application | Chemical, Petrochemical hazardous area DCS system, spare parts replacement |
Product features
1. Modular DIN rail installation, directly installed on the system carrier base, arranged before the first intrinsically safe I/O carrier.
2. Fully electrically isolated design, isolating the safety zone from the intrinsic safety zone bus, suppressing common mode interference and grounding loop issues.
3. Transparent transmission of bus signals, without changing the bus protocol or adding additional communication delay.
4. Equipped with explosion-proof Zone2/Class I Div2 certification, the module body can be installed in hazardous area cabinets.
5. Using dedicated male and female backplane connectors, directly connected in series to the Railbus bus link without the need for additional wiring.
6. The whole machine is designed with low power consumption, suitable for long-term continuous operation inside the control cabinet, and has no fan for passive heat dissipation.
7. As a necessary infrastructure component of the system, it supports address range configuration and adapts to different numbers of I/O nodes.
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