Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FM221 |
| Brand | Bachmann |
| Product Type | FASTBUS Modules |
| Origin | Austria |
| Weight | 0.3 kg |
| Dimensions | 55 x 80 x 118 mm (estimated shipping size: 55 x 80 x 118 mm) |
| Communication System | FASTBUS |
| Fiber-Optic Interfaces | 1 or 2 FO interfaces, depending on module variant |
| Maximum Distributed Substations | Up to 15 |
| Maximum Fiber-Optic Distance | Up to 2000 m over multimode cable |
| Connector Options | Harting PushPull connector or LC patch cable, depending on configuration |
| Tariff Code | 8537101190 |
FASTBUS Communication and Fiber-Optic Network
The FASTBUS architecture connects distributed control substations through fiber-optic communication links. Master modules provide one or two FO interfaces, while compatible slave modules can incorporate an integrated power supply. The documented network supports up to 15 distributed substations and transmission distances of up to 2000 m using multimode fiber-optic cable.
Connector selection depends on the installed module variant. The available connection options include robust Harting PushPull connectors and LC patch cables. Before replacement, verify the interface type, connector arrangement, fiber type, and compatibility with the existing FASTBUS hardware. ColdClimate models are also available within the documented product range; the specific environmental rating of the FM221 must be confirmed against its exact variant.
Frequently Asked Questions
Q: What is the maximum fiber-optic transmission distance for the FASTBUS network?
A: The documented maximum is 2000 m over multimode fiber-optic cable. Confirm the applicable distance limit for the installed module and network configuration.
Q: How many distributed substations can the FASTBUS architecture support?
A: The documented architecture supports up to 15 distributed substations. The final configuration must match the installed master and slave modules.
Q: Which fiber-optic connectors are supported?
A: The documented connection options include Harting PushPull connectors and LC patch cables. Verify the connector type and optical interface on the specific module before installation.
Field Installation Guidelines
- Verify the FM221 model marking and compare the installed hardware with the replacement module.
- Confirm the master or slave role, fiber-optic interface count, and connector type before connecting the module.
- Inspect the multimode fiber-optic cable and connectors for contamination, physical damage, and incorrect mating.
- Route communication cables separately from power conductors where practical to reduce electromagnetic interference and prevent mechanical damage.
- Follow the system manufacturer’s grounding, power distribution, and module insertion procedures. Do not assume hot-swap capability without explicit documentation.
- After installation, verify link status and communication with the connected substations using the controller’s approved diagnostic procedures.
- Confirm environmental suitability before installing the module in a ColdClimate or other temperature-controlled application.
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