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L'édito de Vincent BedouinSAE Remote I/O
Connect remote process data
The TBUS extension offers a low-cost method for coupling distributed feeders and remote measuring points to a telecontrol system. Instead of installing a complete FW-5, or needing elaborate cabling of signal and measurement lines to a central RTU, expansion modules of the FW-5 family are installed in a decentralised manner and connected to the TBUS extension with a patch cable.
Remote I/O typically allows switching station manufacturers to fully pre-wire switch panels, and fully install and test measurement points and switching elements to the corresponding extension boards; the commissioner only needs to fit the patch cables to a central FW-5, FW-5-GATE or FW-5-GATE-4G.
The bus signal is read on an FW-5 telecontrol unit with the TBUS-T sender as the last extension board of the block, and routed to the TBUS-R receiver via a CAT6e cable. This again powers the local extension boards and connects up them to the bus. The TBUS-R’s own power supply, with an additional 2.8A, means power can also be provided to a larger number of current-hungry extension boards (such as the DSO-1, DSO-2 and RES-1).
The system works transparently and with all extension boards without configuration intervention – in all setIT versions.
Application areas
- Switching stations
- Substations
- Applications with physically distributed measurement points
- Water towers and pump controllers
- Waste water plants
Technical Data
Remote I/O
- No configuration necessary in setIT
- Up to 10 blocks per telecontrol unit
- Maximum overall length 1000 m
- Connection with CAT6e cable
- Behaviour in the event of disruption to communication can be selected between restart of input/output or reset and restart of the base unit for security reasons
- The current limitation on the TBUS in setIT can be lifted from V5.0
TBUS-T (transmitter)
- Transparent transmission of the bus signals
- including interlock loops for command termination
- No additional feed needed
- shall be assembled as last expansion module of the block
- No configuration required
TBUS-R (receiver)
- Additional power supply of the expansion module block
- Up to 12 expansion modules
- Wide range supply 24 to 60V DC ± 20%, max. 15 W