IS220PDIIH1A - Isolated Discrete Input Module

SPECIFICATIONS:

Part Number: IS220PDIIH1A
Manufacturer: General Electric (GE)
Series: Mark VIe
Device Type: Isolated Discrete Contact Input I/O Pack
Function Abbreviation: PDII
Voltage Range for Point Isolated Inputs: 14 to 32 V dc, nominal 24 V dc
Input Channels: 16 Isolated Channels
Input Voltage (Nominal): 24 VDC, 48 VDC, 125 VDC
Isolation Voltage: 1500 Vrms (Galvanic Isolation)
Communication: Dual 10/100 Ethernet (IONet)
Operating Temp: -30 °C to +65 °C (-22 °F to +149 °F)
Power Supply: 28 VDC (Nominal)
Availability: In Stock
Origin: United States
Manual: GEH-6721_Vol_II_BL

FUNCTIONAL DESCRIPTION:

The IS220PDIIH1A is an Isolated Discrete Contact Input (PDII) I/O pack designed and manufactured for the General Electric (GE) Mark VIe control system. The Isolated Discrete Input (PDII) provides the electrical interface between one or two I/O Ethernet networks (IONet) and a point/group isolated discrete input terminal board. The PDII contains a BPPX processor board and an acquisition board specific to the isolated discrete input function. The PDII accepts up to 16 isolated contact inputs that can be point isolated, group isolated, or a mix based on the terminal and optional board configurations. Each channel can accept different voltage levels as follows: 24 V dc/ 48 V dc/ 125 V dc/ 250 V dc/ 115 V ac rms/230 V ac rms.

System input to the I/O pack is through dual RJ-45 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. Network, I/O pack, and contact input status is displayed on the I/O pack front LEDs.

COMPATIBILITY:

If the PDIIH1A is used with the terminal board SDII and the optional board WDIIH1, all 16 channels can be system wetted with 24 V dc, 115 V ac rms, or 230 V ac rms. When using WDIIH1, each of the 16 channels can be individually set and configured as point isolated, and each channel can accept a different voltage level as needed. A mix of point isolation and group isolation is possible in this configuration.

If the PDII is used with the terminal board SDII and the optional board WDIIH2, all 16 channels can be system wetted with 48 V dc. When using WDIIH2, each of the 16 channels can be individually set and configured as point isolated, and each channel can accept a different voltage level as needed. A mix of point isolation and group isolation is possible in this configuration. If the PDII is used with the terminal board SDII and the optional board WDIIH3, all 16 channels can only be system wetted with 125 V dc. With WDIIH3, there is no option provided to configure channels as point isolated.

INSTALLATION:

1. Securely mount the desired terminal board.
2. Directly plug one PDII into the SDII simplex terminal board connectors. The terminal board can be with or without the optional board, as per the user's requirement.
3. Mechanically secure the PDII using the threaded studs adjacent to the Ethernet ports. The studs slide into a mounting bracket specific to the terminal board type. The bracket location should be adjusted such that the right-angle force is applied to the DC-37 pin connector between the PDII and the terminal board. The adjustment should only be required once in the service life of the product.
4. Plug in one or two Ethernet cables, depending on the system configuration. The pack operates over either port. If dual connections are used, the standard practice is to connect ENET1 to the network associated with the R controller.
5. Apply power to the pack by plugging in the connector on the side of the pack. It is not necessary to remove power from the cable before plugging it in because the I/O pack has inherent soft-start capability that controls current inrush on power application.

WHY BUY FROM WOC:

World of Controls supports the critical safety and control needs of your GE Mark VIe systems by offering the PDIIH1A in both UNUSED and REBUILT conditions. Every PDII pack is rigorously tested on specialized diagnostic benches to verify isolation integrity, channel response times, and network redundancy. We maintain a comprehensive inventory of isolated discrete I/O to ensure your power plant and industrial operations stay protected. With global logistics and 24/7 technical expertise, WOC is your trusted source for high-reliability Speedtronic hardware.

FREQUENTLY ASKED QUESTIONS:

What is the GE IS220PDIIH1A?

It is an I/O pack used in the Mark VIe system to monitor 16 isolated discrete contact inputs. It provides an electrical interface between field contacts and the IONet.

What is the difference between PDIA and PDII packs?

While both handle discrete inputs, the PDII (Isolated) pack provides significantly higher galvanic isolation (1500 Vrms) compared to standard discrete packs, making it better suited for high-noise environments or safety-critical circuits.

What is the function of the IS220PDIIH1A?

The Isolated Discrete Input Module provides 16 channels of isolated discrete contact inputs for the Mark VIe system, translating physical contact states (open/closed) into digital data for the turbine controller.

What is the maximum isolation voltage for this Module?

The PDII pack is rated for 1500 Vrms galvanic isolation between the field inputs and the internal logic/network circuits.