IS400TCASH1ADC | Terminal Control Assembly

Parameter Name Parameter Value
Product Model IS400TCASH1ADC​
Manufacturer ​GE​
Product Type Terminal Control Assembly
I/O Channels 64 (individually configurable)
Signal Types TC/J/K/E/T/R/S, RTD, 4-20mA, ±10V
Isolation 1500V AC channel-to-channel
Accuracy ±0.05% FS @ 25°C
Max Sampling Rate 1000 samples/sec (aggregate)
Connectors 4x MIL-DTL-38999 Series III
EMC Immunity 10V/m @ 80MHz-1GHz (IEC 61000-4-3)
Shock Resistance 30g @ 11ms (IEC 60068-2-27)
Housing IP66 aluminum enclosure
Weight 3.2 kg
Certifications SIL 2 (IEC 61508), IEEE 344 (Seismic)
Category:

Description

Product Overview​
The ​​GE IS400TCASH1ADC​​ represents the critical interface nexus within GE’s Mark VIe turbine control system, engineered for high-density signal conditioning and distribution in safety-critical power generation applications. This terminal control assembly (TCA) integrates 64 configurable I/O channels with galvanic isolation, serving as the primary junction between turbine-mounted sensors/actuators and the Mark VIe controller. Designed for extreme environments, the ​​GE IS400TCASH1ADC​​ features MIL-spec connectors and conformal-coated PCBs that withstand salt fog, conductive dust, and rapid thermal cycling (-40°C to +85°C). Its patented “Smart Terminal” technology enables automatic sensor type detection (TC/RTD/mV) while providing ±0.05% signal accuracy – making it indispensable for gas/steam turbine protection systems where measurement integrity prevents catastrophic failures.


​## Technical Specifications​

Parameter Name Parameter Value
Product Model IS400TCASH1ADC​
Manufacturer ​GE​
Product Type Terminal Control Assembly
I/O Channels 64 (individually configurable)
Signal Types TC/J/K/E/T/R/S, RTD, 4-20mA, ±10V
Isolation 1500V AC channel-to-channel
Accuracy ±0.05% FS @ 25°C
Max Sampling Rate 1000 samples/sec (aggregate)
Connectors 4x MIL-DTL-38999 Series III
EMC Immunity 10V/m @ 80MHz-1GHz (IEC 61000-4-3)
Shock Resistance 30g @ 11ms (IEC 60068-2-27)
Housing IP66 aluminum enclosure
Weight 3.2 kg
Certifications SIL 2 (IEC 61508), IEEE 344 (Seismic)

​## Key Features and Advantages​
​Intelligent Signal Management​
Auto-detect circuitry identifies sensor types within 500ms of connection, while continuous lead resistance compensation eliminates measurement errors from cable degradation. The ​​IS400TCASH1ADC​​’s dual-watchdog design cross-validates signal processing between primary and backup μControllers, ensuring <10ms fault detection.

​Extreme Environment Resilience​
Gold-plated MIL-spec connectors maintain <5mΩ contact resistance after 500 mating cycles in coal-fired plants. Conformal coating (UL QML-38535) protects against H₂S corrosion in offshore platforms. Internal thermal management maintains ±0.1% accuracy across 125°C temperature gradients.

IS400TCASH1AGD

​Maintenance Optimization​
Hot-swappable channel modules (replaceable in <2 minutes) minimize turbine downtime. Built-in HART multiplexing allows calibration of 32 transmitters simultaneously without process interruption. QR-coded terminals enable paperless commissioning via ​​ToolboxST Mobile​​.

​Cybersecurity Enforcement​
Hardware-enforced IEC 62443 segmentation prevents unauthorized access to critical I/O. Signed firmware updates with TPM 2.0 validation block malware injection. Optical isolation gaps eliminate ground loop vulnerabilities.


​## Application Areas​
​Combined Cycle Power Plants​​:
12x ​​IS400TCASH1ADC​​ units monitor 768 combustion dynamics probes across 4 gas turbines, detecting flame instability within 5ms to prevent forced outages.

​Hydroelectric Governors​​:
In pumped storage facilities, the assembly’s ±0.01°C RTD accuracy enables precise wicket gate positioning, synchronizing turbine response within 0.02Hz grid frequency deviations.

​Offshore Compression​​:
SIL 2-certified modules control critical shutdown valves on LNG carriers, where IP66 rating and 5g vibration tolerance ensure reliability in North Sea conditions.

​Geothermal Steam Fields​​:
High-temperature version (​​IS400TCASH1AHC​​) handles 200°C ambient temperatures while monitoring 64 wellhead pressure/temperature points across sulfuric acid environments.


​## Related Products​

  1. ​IS420ESWBH3A​​ – Ethernet switch (TCA backbone)
  2. ​IS415UCVHH1B​​ – Controller module (requires TCA)
  3. ​IS410TURPS1A​​ – Redundant power supply
  4. ​DS3800HMPA​​ – Memory module (historical data)
  5. ​IS400TBAIH1C​​ – Analog input card (expansion)
  6. ​IS404TBDOH1D​​ – Digital output card (expansion)
  7. ​GAT-4010​​ – Terminal test adapter
  8. ​IS400TCASH1AEC​​ – Explosion-proof variant
  9. ​KTC-12​​ – Conduit sealing kit
  10. ​IS400TCASH2A​​ – Successor (supports IO-Link)

 

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