GMI X1-IS-DO-02-S I.S. SIL3 Digital Output Driver with Diagnostics Intrinsically Safe Isolators

DESCRIPTION

The Digital Output Driver X1-IS-DO-02 module is suitable for energizing safety related circuits, up to SIL 3 level, for high risk industries. It can drive solenoid valves, visual or audible alarms to alert a plant operator, or other process control devices in Hazardous Area from control signals located in Safe Area. They can also be used as switchable supplies to power measuring or process control equipments. On the field side, the three most widespread Intrinsic Safety valve family parameters are supported. On the system side, a wide compatibility towards different DCS/PLC is guaranteed: driving pulse testing is permitted by a dedicated internal circuit, which prevents spurious activations and LED flickering, while offering an acceptable resistance to the DO Card. Line and load short/open circuit detection are provided, both when the load is off and when the load is on. The fault in the field is directly mirrored to the PLC DO by artificially increasing the input impedance without changing the output state, and it is also reported to the cumulative fault. To ease maintenance operations, field devices can be disconnected through a two-position insertion/extraction mechanism. This product requires a dedicated Termination Board.

FEATURES

SIL 3 / SC 3

Input from Zone 0 / Division 1

Installation in Zone 2 / Division 2

Loop disconnection to ease maintenance operations

Short-circuit proof

Three different IS valve family parameters supported

Compatible with DCS/PLC pulse testing

Selectable input impedance (software programmable)

Line & Load short/open circuit detection (programmable thresholds)

Field fault mirroring to the DCS/PLC DO Card

Three port isolation, Input/Output/Supply

CHANNELS

1

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