GE IS220PTCCH1B PTCC Thermocouple Input Module

The IS220PTCCH1A is a thermocouple input manufactured by General Electric for use within the Mark VI/Mark VIe systems. 

These systems were some of the later Speedtronic controls system technology systems developed and

released by General Electric for the management and control of gas, hydro and steam industrial turbine systems. 

The Mark VIe Series that this IS220PTCCH1A Thermocouple Input Module belongs to must be considered a decently-strong step up 

from the Mark V Turbine Control System Series even, given the fact that the Mark V Series has a more-restricted set of specific 

applications in steam and gas turbine automated drive assembly settings alone. 

While this is true, this IS220PTCCH1A device's greater Mark V Turbine Control System Series is still definable as 

one of the lastly-developed GE Mark product series to make use of the patented Speedtronic control system technology as mentioned above, 

while increases its overall market desirability by itself.

Hardware Tips and Specifications

This pack has an internally placed BPPx processor board as well as an acquisition board that is used for thermocouple input functions.

 Before even considering any ultimate purchase decision on this IS220PTCCH1A device, 

it is crucial to understand the fact that this IS220PTCCH1A device is actually not the originally-developed product of its specific Mark V Series intended functional role, 

as that would in fact be the IS220PTCCH1 parent Thermocouple Input Module noticeably not adopting this IS220PTCCH1A device's sole A-rated functional product revision. 

The IS220PTCCH1A can be used in simplex, duplex, and triple modular redundant applications.

This board can support E, J, K, S, and T standard thermocouples as well as mV inputs with a span of -8 to 45 mV.  E, J, K, S, and T thermocouples 

can be either grounded or ungrounded and can be located up to 984 feet from the turbine I/O panel.  Cable resistance must be kept to a maximum 450 Ω. 

The number of packs used dictate the following:

Qty 1 IS220PTCCH1A - 12 Thermocouple Inputs

Qty 2 IS220PTCCH1A - 24 Thermocouple Inputs

Qty 3 IS220PTCCH1A - Used in TMR Configurations

Functional Description

The Analog I/O pack (PAIC) is an electrical interface that connects one or two I/O Ethernet networks to an analog input terminal board. 

The PAIC includes a BPPx processor board as well as an acquisition board dedicated to the analog I/O function.

The module has ten analog inputs. The first eight inputs can be set to 5 V or 10 V or 4-20 mA current loop inputs. 

The final two inputs can be set to 1 mA or 4-20 mA current inputs.

The load terminal resistors for current loop inputs are located on the terminal board, and the PAIC senses voltage across these resistors. 

PAICH2 has two current loop outputs ranging from 0 to 20 mA.

 It also includes additional hardware that allows for 0-200 mA current on the first output only.

The I/O pack receives and sends data to the controller via dual RJ-45 Ethernet connectors and is powered by a three-pin connector. 

Field devices are communicated with via a DC-37 pin connector that connects directly to the associated terminal board.

LED indicator lights provide visual diagnostics.