EMERSON VE4017P0 M-series FOUNDATION™ Fieldbus I/O

Product Description 

 The I/O card is enclosed in a DeltaV-designed common form factor that plugs into the I/O interface carrier. The housing is clearly labeled with the enclosed I/O card type. Clearly visible LEDs on the top of the I/O card display the power, error,   and status to the two channels included in the I/O card. The Fieldbus I/O Card meets ISA G3 corrosion specifications by using superior electronic components and conformal coating. Redundancy Made Easy. The active and standby I/O cards   are connected to the field at the redundant terminal block.   When a fault is detected, the system automatically switches to the backup I/O card. The reliability rating of the terminal block is greater than the high reliability of the I/O cards. The controller scans each card of a redundant pair.   Incremental controller loading is a function of the number of redundant cards. In addition, the redundant cards have dedicated communication between the pair and the backup card monitors the health of the active card. Configuration of redundancy is not required as the DeltaV system automatically recognizes the redundant pair of cards and assigns a device signal tag (DST) to the channels on the primary card. Signals referenced for each connected FOUNDATION Fieldbus device will count at most 1 DST. The DST type counted will be the most valuable type used to reference a signal for each device. For example, a device with 1 AI signal reference and   1 AO signal reference will count as 1 AO DST. Switchover time for redundant I/O is minimal, and the process will be undisturbed. An alarm on the integrity error for the primary notifies the operator of a switchover. The backup card is also monitored for integrity alarms. Events that can cause a switchover include. 

 y Hardware failure within the active card. 

 y Communications failure between the active card   and the controller. 

 y Removal of the active card from the carrier.

 y Detection of a fault in the field wiring. A switchover may also be initiated from the diagnostics explorer, and the health and status of both cards and their channels are available in the diagnostics explorer. The system automatically commissions a new standby card.   In safe areas, failed cards can be replaced under power.   In hazardous areas, appropriate installation procedures must be followed. The M-series FOUNDATION Fieldbus I/O subsystem includes: y H1 interface card and simplex terminal block, or y 2 H1 interface cards and redundant terminal block.