The IS220PPRAS1B communicates with the control modules through IONet, which is GE’s industrial Ethernet network. It also has an Ethernet connection that can be used for remote monitoring and diagnostics.

The IS220PPRAS1B supports six speed signals (specified as three sets of speed pairs). This allows it to monitor the speed of the turbine from two independent sources. The IS220PPRAS1B also monitors a variety of other feedback signals, such as vibration, temperature, and pressure. This information is used to determine the health of the turbine and to prevent damage.

The IS220PPRAS1B is typically used in conjunction with a TREA terminal board and a WREA option board. The TREA terminal board provides the interface between the IS220PPRAS1B and the trip solenoids. The WREA option board provides additional features, such as support for six-speed inputs and hardware-implemented overspeed protection.

Here are some of the key features of the GE IS220PPRAS1B:

·Triple modular redundant (TMR) design for high reliability
·Supports six speed signals (specified as three sets of speed pairs)
·Monitors a variety of feedback signals
·Communicates with the control modules through IONet
·Has an Ethernet connection for remote monitoring and diagnostics
·Used in conjunction with a TREA terminal board and a WREA option board

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