4.3 TBAIS1C Analog Input/Output
The Analog Input/Output (TBAI) terminal board supports 10 analog inputs and 2 outputs. The 10 analog inputs accommodate
two-wire, three-wire, four-wire, or externally powered transmitters. The analog outputs can be set up for 0-20 mA. Inputs and
outputs have noise suppression circuitry to protect against surge and high frequency noise. The TBAI has three DC-37 pin
connectors for TMR I/O packs. Simplex I/O redundancy is also supported using a single JR1 connection.
Note The TBAIS1C is IEC 61508 safety-certified when used with the Mark VIeS YAIC.
J ports
For simplex, connect I/O pack to JR1.
For TMR, use all three connectors.
With TMR I/O redundancy, the input signals are fanned to the three connectors for the R, S, and T I/O packs. TMR outputs
combine the current of the three connected output drivers and determine the total current with a measuring shunt. TBAI then
presents the total current signal to the I/O packs for regulation to the commanded setpoint.
Compatibility
Board Revision
Mark VIeS IS200YAIC Comments
TBAIS1C Yes IEC 61508 safety certified with YAIC
106 GEH-6855_Vol_II GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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