The GE IS220PCLAH1A also cataloged as the IS220PCLAH1A Core Analog I/O Module, operates as a dedicated hardware component for analog signal acquisition and output within Mark VIe distributed control systems.
Hardware Specifications
Parameter
Specification
Model
IS220PCLAH1A
Brand
GE (General Electric)
Origin
USA
Weight
Not specified
Dimensions
Not specified
Operating Temp
–30 deg C to +65 deg C
Power Consumption
19.8 W max
Power Supply Input Voltage
28 VDC
Number of Channels
4
A/D Converter Resolution
16-bit
Input Impedance Voltage Mode
>200 kΩ
Supported Inputs
Thermocouple, RTD, Voltage, 4–20 mA current loop
Manual Reference
GEH-6721L
Mounting Type
Terminal board connection (SCLS/SCLT)
Backplane Bus Communication Velocity Licenses
The IS220PCLAH1A integrates into the Mark VIe backplane with firmware flash compatibility across controller configurations. Backplane bus communication velocity licenses ensure deterministic data transfer between PCLA modules and supervisory controllers. This architecture supports dual controller TMR I/O, dual controller simplex I/O, and simplex controller TMR I/O setups. I/O density scaling is achieved by distributing thermocouple, RTD, voltage, and current loop signals across multiple PCLA modules, with synchronization maintained through firmware updates.
Frequently Asked Questions (FAQ)
Q: Can the IS220PCLAH1A be used in mixed sensor configurations? A: Yes. It supports thermocouple, RTD, voltage, and 4–20 mA current loop inputs and outputs within the same module.
Q: Does the module allow hot-swap replacement? A: No. Modules must be powered down before removal or insertion to prevent signal disruption.
Q: How is redundancy achieved in TMR configurations? A: Redundancy is maintained by distributing signals across three PCLA modules connected to a single SCLT terminal board, ensuring fail-safe operation.
Field Installation Guidelines
Terminate sensor shields at the terminal board ground to minimize noise.
Maintain separation between analog signal wiring and high-voltage circuits.
Ensure correct polarity for 4–20 mA current loop connections.
Verify input impedance requirements (>200 kΩ) when wiring voltage mode signals.
Confirm firmware compatibility before integrating into dual or simplex controller configurations.
