FBM216 P0922VV FOXBORO Input Interface Module

1.HIGH ACCURACY:

   For high accuracy, the module incorporates a SigmaDelta converter which can provide new analog input values for each channel every 100 milliseconds.

2.COMPACT DESIGN:

   The FBM216 has a compact design, with a rugged extruded aluminum exterior for physical protection of the circuits. Enclosures specially designed for mounting the FBMs provide various levels of environmental protection, up to harsh environments per ISA Standard S71.04.

3.HIGH RELIABILITY:

   The redundancy of the module pair, coupled with the high coverage of faults, provides very high subsystem availability time. Either module may be replaced without upsetting field input signals to the other module. A module can be removed or replaced without removing field device termination cabling, power, or communications cabling.

4.REDUNDANT ANALOG INPUTS:

   For each input operation, identical reads are sent to both modules, fully exercising the Fieldbus and the logic circuitry of each module. Each input channel accepts an analog sensor input or a self-powered 4 to 20 mA source. Device power from each module is diode OR'd together in the redundant adapter to ensure redundant power.

   The microprocessor of each module executes the analog I/O application program, plus security routines that validate the health of the FBM. Input channel security is enhanced by redundantly powering the input current loop from per-channel power supplies in each module of the pair.

5.VISUAL INDICATORS:

   Light-emitting diodes (LEDs) incorporated into the front of the module provide visual indication of the module's operational and redundancy status, and communication activity on the channels. Two additional LEDs provide the master or tracker status of the modules.