IS220PDIOH1A, REV D - Discrete Input/Output Module

SPECIFICATIONS:

Part Number: IS220PDIOH1A, REV D
Manufacturer: General Electric
Series: Mark VIe
Input isolation in pack: Optical isolation to 1500 V
Input Filter: Hardware filter, 4 ms
Ac voltage rejection: 60 V rms
Number of relay command channels: 12
Number of input channels: 24 DI and 12 form C
Operating Temperature: 0 to 60°C
Product Type: Discrete Input/Output Module
Size: 15.875 cm high x 10.795 cm wide
Country of Origin: United States
Availability: In Stock
Manual: GEH-6721G

FUNCTIONAL DESCRIPTION:

IS220PDIOH1A, REV D is a Discrete Input/Output Module manufactured and designed by General Electric as part of the Mark VIe Series used in distributed control systems. The Discrete Input/Output (PDIO) pack serves as the electrical interface between one or two I/O Ethernet networks and a discrete input/output terminal board. It consists of a processor board, shared across all Mark* VIe distributed I/O packs, and an acquisition board dedicated to discrete input/output functions. The pack can accept up to 24 contact inputs, control 12 relay outputs, and receive terminal board-specific feedback signals. The terminal board determines the voltage capability of the PDIO. System input is provided via dual RJ45 Ethernet connectors and three-pin power input, while discrete signal input/output is handled through a DC-62 connector linked to the terminal board. Visual diagnostics are available via indicator LEDs, and local diagnostics can be accessed through an infrared port.

The PDIO functions as the combined equivalent of a PDIA and PDOA I/O pack in a single assembly. For simplex applications, it is mounted on a TDBS terminal board, which combines the features of an SRLY relay terminal board and an STCI contact input terminal board. For TMR applications, it is mounted on a TDBT terminal board, and when equipped with the WROB option, it provides the combined functionality of a TRLYH1B relay terminal board and a TBCI contact input terminal board.

COMPATIBILITY:

PDIOH1A is compatible with two types of discrete contact input/output terminal boards: TDBS for single PDIO applications and TDBT for TMR PDIO applications. The relay output portion of the terminal board accepts option cards as described later in this document. The following table gives details of the compatibility:

• Simplex uses one I/O pack with one or two network connections.
• TMR uses three I/O packs with one network connection on each.

INSTALLATION:

• Insert one PDIO I/O pack for simplex or three PDIO I/O packs for TMR into the terminal board connectors.
• Secure the packs mechanically using the threaded studs next to the Ethernet ports. These studs fit into a mounting bracket specific to the terminal board type. Adjust the bracket position to ensure no right-angle force is applied to the DC-62 pin connector between the pack and the terminal board. This adjustment only needs to be made once during the product's lifecycle.
• Connect one or two Ethernet cables, based on the system setup. The pack operates through either port, with ENET1 typically connected to the network linked to the R controller when using dual connections.
• Power the pack by plugging in the connector on its side. There is no need to remove power from the cable, as the I/O pack has soft-start capability that manages current inrush during power-up.

OPERATION:

• High-performance processor with integrated RAM and flash memory.
• Two independent 10/100 Ethernet ports with connectors.
• Hardware watchdog timer and reset circuitry.
• Built-in I/O pack temperature sensor.
• Infrared serial communication port.
• Status indicator LEDs.
• Electronic identification and the capability to read IDs from other boards.
• Extensive programmable logic supporting the acquisition board.
• Input power connector with soft start and current-limiting features.
• Local power supplies with sequencing and monitoring functions.

CONTACT INPUT SIGNALS:

The discrete input/output acquisition board performs the second stage of signal conditioning and level shifting to interface terminal board inputs with the control logic. The initial signal conditioning is handled by the terminal board. The input circuit features a comparator with a variable threshold, and each input is isolated from the control logic by an optocoupler and a separate power supply, though the inputs are not isolated from each other. Each of the 24 inputs includes filtering, hysteresis, and a yellow status LED that lights up when an input is active. The LED is off when the input is inactive. These LEDs are located at the bottom left of the PDIO pack.

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FREQUENTLY ASKED QUESTIONS:

How do I connect the PDIO I/O pack to the system?

For simplex applications, insert one PDIO I/O pack into the terminal board connectors. For TMR applications, use three PDIO I/O packs. Secure the packs using the threaded studs and connect the Ethernet cables and power supply as needed.

What type of communication does the PDIO I/O pack support?

The PDIO I/O pack supports Ethernet communication with dual 10/100 Ethernet ports and also includes an infrared serial communication port for diagnostics.

How does the status indication work on the PDIO I/O pack?

Each of the 24 inputs features a yellow status LED that lights up when an input is active and turns off when the input is inactive. The LEDs are grouped at the bottom left of the PDIO pack for easy monitoring.