IS220PDIOH1A GE MKVIe, Discrete Input/Output Module

Description:

The IS220PDIOH1A is a Discrete Input/Output Module designed and manufactured by General Electric as part of the Mark VIe Series for use in distributed control systems. This module serves as an electrical interface between one or two I/O Ethernet networks and a discrete input/output terminal board, featuring both a processor board common to all Mark VIe distributed I/O packs and an acquisition board specific to the discrete input/output function. It can handle up to 24 contact inputs and manage feedback signals specific to the terminal board while also controlling up to 12 relay outputs.

Functionality of the IS220PDIOH1A is determined by the connected terminal board, with capabilities ranging from accepting different voltage levels to accommodating various input and output needs. The module connects to the system via three-pin power input and dual RJ45 Ethernet connectors, with discrete signal input and output through a DC-62 pin connector directly attached to the corresponding terminal board connector. Visual diagnostics are provided through indicator LEDs, offering straightforward status identification.

In terms of compatibility, the IS220PDIOH1A is designed to work with specific terminal boards; TDBT for TMR PDIO applications and TDBS for single PDIO applications. These terminal boards accept option cards in their relay output section, enhancing the module's versatility and functionality.

Installation of the IS220PDIOH1A involves securely mounting the chosen terminal board and directly connecting it to the PDIO I/O pack. Mechanical security is achieved using threaded studs adjacent to the Ethernet ports that fit into a mounting bracket designed for the specific terminal board type. The bracket's position is adjusted to avoid right-angle force on the DC-62 connector, ensuring longevity and stability. Depending on the system configuration, one or two Ethernet cables are connected, typically linking ENET1 to the network associated with the R controller in dual connection scenarios. Power is supplied through a side connector, with built-in soft-start capability simplifying installation without the need for powering down.

Operationally, the IS220PDIOH1A features a high-speed CPU equipped with flash memory and RAM, two fully independent 10/100 Ethernet ports, a hardware reset circuit paired with a watchdog timer, and an internal temperature sensor. Status LEDs offer visual cues for diagnostics, complementing electronic ID reading capabilities for other boards. The module's input power connector includes a current limiter with soft start, along with local power supplies complete with sequencing and monitoring. Upon applying power, the soft-start circuit ramps up voltage on the processor board, by a sequenced startup of the local power supply and processor reset. The CPU then runs application code specific to the I/O pack type stored in flash memory, verifying the correct match between application code, acquisition board, and terminal board before initiating Ethernet communications and requesting a network address using DHCP based on the terminal board's unique identifier. Once Ethernet initialization is complete, the CPU proceeds to program onboard logic, enabling the acquisition board to commence operations.

Datasheet Link:

IS220PDIOH1A GE MKVIe, Discrete Input/Output Module PDF Datasheet