FOXBORO FBM44 Dual baud rate intelligent transmitter Output interface module
FOXBORO FBM44 Dual baud rate intelligent transmitter Output interface module
The Dual baud Rate Smart Transmitter (IT)/0 to 20ma Output interface Fieldbus module contains four separate smart transmitter interface channels and four 0 to 20ma DC analog output channels. This module is the main module and is independently connected to the redundant fieldbus.
Intelligent Transmitter (IT) interface channel Each IT interface channel provides internally isolated power and communication capabilities to IT through a single twisted pair cable. The module also allows the use of external power sources to power IT.
When using an external power supply shared by two or more loops, a cable balancing module is required to maintain the balance of the digital communication lines. The baud rate is software optional and all channels are at the same baud rate. Each module provides two-way digital communication between IT and the system redundant fieldbus at 4,800 baud, or at 600 baud, while allowing 4 to 20 mA analog signals for other applications (for example, for emergency shutdown systems).
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