Overview
Configured for thermocouple signal acquisition in the Mark VIe distributed I/O system, the General Electric IS220PTCCH2A (IS220PTCC Thermocouple Input Pack) provides direct electrical processing between one or two I/O Ethernet networks and a compatible thermocouple input terminal board. The pack supports up to 12 input channels for E, J, K, S, and T thermocouples, as well as mV inputs, with an input span of -8 mV to +45 mV.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS220PTCCH2A |
| Brand | General Electric |
| Series | Mark VIe |
| Product Type | Thermocouple Input Pack |
| Origin | United States (USA) |
| Number of Channels | 12 |
| Supported Input Types | E, J, K, S, T thermocouples and mV inputs |
| Input Span | -8 mV to +45 mV |
| Network Interface | One or two I/O Ethernet networks |
| Internal Processing | Processor board and thermocouple acquisition board |
| Maximum Input Expansion | Up to 24 inputs when two packs are employed |
| Repair Time | 3-5 days |
| Availability | In Stock |
Mark VIe Distributed I/O and Firmware Integration
The IS220PTCCH2A operates as part of the GE Mark VIe distributed I/O architecture. Its processor board performs pack-level processing, while the dedicated acquisition board handles thermocouple and mV signal acquisition. Therefore, the hardware separates common processing functions from application-specific input circuitry.
The pack communicates with one or two I/O Ethernet networks and interfaces with the associated thermocouple input terminal board. In addition, the Mark VIe architecture supports I/O density scaling by allowing multiple input packs to increase the available thermocouple input capacity. Firmware and hardware compatibility should be verified against the installed Mark VIe control system configuration before replacement or commissioning.
Frequently Asked Questions
Q: How many thermocouple channels does the IS220PTCCH2A support?
A: One IS220PTCCH2A pack supports up to 12 thermocouple inputs. Two packs can be employed to support up to 24 inputs according to the system configuration.
Q: Which thermocouple types can the IS220PTCCH2A process?
A: The pack supports E, J, K, S, and T thermocouples. It also accepts mV input signals within the specified -8 mV to +45 mV span.
Q: What internal hardware functions are included in the pack?
A: The pack contains a processor board used for common Mark VIe distributed I/O processing and an acquisition board designed for thermocouple input signal acquisition.
Field Installation Guidelines
- Disconnect or isolate system power according to the applicable Mark VIe maintenance procedure before installing or replacing the pack.
- Confirm that the IS220PTCCH2A is matched with the correct thermocouple input terminal board and installed system configuration.
- Use thermocouple extension and compensation wiring appropriate for the installed sensor type.
- Keep low-level thermocouple and mV signal wiring separated from high-voltage and high-current conductors to reduce induced electrical noise.
- Maintain correct shield termination practices according to the site grounding design and Mark VIe installation documentation.
- Verify channel assignment, thermocouple type configuration, and input scaling before placing the associated control function into service.
- Inspect Ethernet connections and connector engagement before system commissioning.
- Check firmware compatibility with the installed Mark VIe control hardware before replacing an existing pack.
