GE Mark VIe Series IS220PDIOH1B Discrete Input/Output (I/O) Module

About the IS220PDIOH1B

The IS220PDIOH1B unit is a Discrete I/O Pack part of the General Electric Speedtronic Mark VI/VIe/VIeS gas turbine control modules with accessory combinations approved for use in hazardous locations. When the IS220PDIOH1B model is being operated in the chosen system, it is used with several terminal boards; some of the terminal boards used are labeled as follows:

ISx0yTDBSH2A

ISx0yTDBSH8A

ISx0yTDBTH2A

ISx0yTDBTH8A

These terminal boards extend the PDIO packs functionality, as the previous PDIO pack can only work with two accessory terminal boards. The terminal boards are labeled as Intrinsically Safe Apparatus Relay Contact terminal boards.

This unit contains two Ethernet ports, a local processor, and a data acquisition board for use within the GE Mark VI Speedtronic Series. The electronics technology for the Mark VIe I/O packs introduced in 2004 is obsolete. The front panel of the IS220PDIOH1B includes LED indicators for both ethernet ports for the unit’s power and an “attn” LED. Additional LEDs are related to relay connections.

The IS220PDIOH1B has a minimum voltage rating of 27.4 VDC, while the nominal rating is 28.0 VDC. The unit and its associated terminal boards have specific field wiring connection instructions that must be followed, including wire size and screw torque.

There are twenty-four field terminals when using the TDBS or TDBT boards on the IS220PDIOH1B. All of the positive terminals are labeled as contact-wetting inputs. Each of the terminals on the model differs between negative and positive terminals. For more information on the terminals, refer to the last page of the data sheet above.

Frequently Asked Questions about IS220PDIOH1B

What is the IS220PDIOH1B model?

The IS220PDIOH1B model is a Discrete Input/Output (I/O) Module or Pack. It is used with ISx0yTDBS2A/TDBSH8A or ISx0yTDBTH2A/TDBTH8A.

What are the differences between standard IS200TDBT/TDBS boards used on the PDIOH1A compared to the ISx0yTDBS_8A/TDBT_8A accessory boards?

There are no extreme differences between the two models. The terminal boards are all used in hazardous applications and are labeled an intrinsically safe apparatus with entity parameters. The hazardous locations in which the two terminal boards will be used are slightly different but have the same functionalities.

What hazardous locations can the IS220PDIOH1B model be used in?

The IS220PDIOH1B model can be used in Class I, Division 2. Groups A/B/C/D, Class I, Zone 2. Group IIC, and ATEX Zone 2. Group IIC. For all of the certifications standards, refer to the full GEH-6725 manual for all standards.