IS220PDIAH1A GE MKVIe, Discrete Contact Input Terminal Board

Description:

The IS220PDIAH1A is a Discrete Contact Input Terminal Board, designed and manufactured by General Electric as part of the Mark VIe Series for GE's Distributed Turbine Control Systems. This I/O pack serves as an electrical interface between one or two I/O Ethernet networks and a discrete input terminal board. It contains a processor board common to all Mark VIe distributed I/O packs and an acquisition board specific to the discrete input function. The pack can handle up to 24 contact inputs and terminal board-specific feedback signals, accepting three different voltage levels (with types TBCIH1, H2, and H3 terminal boards). Connections for the isolated discrete input board with voltage sensing (with type TICI board) are available. System input to the pack is through dual RJ45 Ethernet connectors and a three-pin power input. Discrete signal input is through a DC-37 pin connector that connects directly with the associated terminal board connector. Visual diagnostics are provided through indicator LEDs, and local diagnostic serial communications are possible through an infrared port.

The PDIAH1A is compatible with five types of discrete contact input terminal boards, including the TBCI boards, TICI boards, and STCI boards, but not the DIN-rail mounted DTCI board. Control mode refers to the number of I/O packs used in a signal path: One I/O pack and one or two network connections are used in Simplex; Dual uses two I/O packs with one or two network connections; Three I/O packs with one network connection each are used by TMR.

To install, securely mount the desired terminal board and directly plug one PDIA I/O pack for simplex or three PDIA I/O packs for TMR into the terminal board connectors. Mechanically secure the packs using threaded studs adjacent to the Ethernet ports, which slide into a mounting bracket specific to the terminal board type. Adjust the bracket location such that there is no right-angle force applied to the DC37 connector between the pack and the terminal board; this adjustment should only be required once in the product's life. Plug in one or two Ethernet cables depending on system configuration, with dual connections typically connecting ENET1 to the network associated with the R controller. Apply power by plugging in the side connector; it is not necessary to insert this while power is off due to inherent soft-start capability controlling current inrush upon power application.

Operationally, it features a high-speed processor with RAM and flash memory, two fully independent 10/100 Ethernet ports, a hardware watchdog timer and reset circuit, a local ambient temperature sensor, an infrared serial communications port, status-indication LEDs, electronic ID and ability to read IDs on other boards, substantial programmable logic supporting the acquisition board, an input power connector with soft start/current limiter, and local power supplies including sequencing and monitoring. Upon power application, the soft-start circuit ramps up voltage on the processor board, local power supplies sequence on, processor reset is removed after self-tests are completed, application code specific to the I/O pack type loads from flash memory verifying correct matching of application code, acquisition board, and terminal board before establishing Ethernet communications requesting a network address using DHCP based on unique identification from the terminal board. After Ethernet initialization, the processor programs onboard logic, runs applications enabling the acquisition board to begin operation.

Datasheet Link:

IS220PDIAH1A GE MKVIe, Discrete Contact Input Terminal Board PDF Datasheet