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ICS Triplex

ICS Triplex T8191 Trusted Single Slot Width Shield 6 Units

Manufacturer: ICS Triplex

Product Number: T8191

Product Type: Trusted Single Slot Width Shield 6 Units

Country of Origin: USA

✓ Payment Method: Telegraphic Transfer (T/T)

✓ Warranty Period: 12 months

✓ Delivery time: Shipment within 3 days of inventory availability

Mail： plcdcsmodule@foxmail.com

Phone/Wechat/Whatsapp：+86 15359254348

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ICS Triplex T8191 Trusted Single Slot Width Shield (6 Units) is a slot blanking panel accessory for the Trusted TMR safety control system, compatible with the T8100 controller chassis.

The T8191 is a single-slot width shielding blank. It must be installed on empty slots within the chassis where no functional modules are fitted. It seals vacant rack positions, optimises internal airflow circulation inside the chassis, and forms a continuous electromagnetic shielding barrier to mitigate electromagnetic interference affecting communication and signal acquisition of processors and I/O modules in the system.

Supplied as a set of 6 pieces. It is a passive rack accessory without control, signal input or output functions. It serves as a standard component to comply with Trusted system hardware installation specifications and EMC electromagnetic compatibility requirements.

ICS Triplex T8191 Trusted Single Slot Width Shield 6 Units.jpg

Technical Features

Fits the single-slot installation dimensions of the Trusted T8100 controller chassis.

Passive mechanical construction; no power supply required and no internal electronic components.

Integrated metallic shielding housing to maintain continuous electromagnetic shielding of the chassis.

Preserves the integrity of the chassis air duct and ensures uniform flow of cooling airflow.

Adopts quick-latch design for easy installation and removal.

Complies with relevant cabinet installation specifications of ATEX and IECEx.

Operating ambient temperature range: 0℃ ~ 60℃.

Provides physical protection to prevent dust and foreign objects from entering the backplane connector area of the chassis.

Model Breakdown

T8191: Base part number

Trusted: Belongs to the Trusted triple modular redundant safety control system series

Single Slot Width: Physical specification – single-slot blanking panel

Shield: Product type – shielding blank

6 Units: Packaging specification; each set contains 6 pieces of blanking panels

Product Characteristics

This passive mechanical blank requires no program configuration.

It seals vacant chassis slots to avoid local overheating caused by airflow short-circuiting.

The continuous full metallic shielding layer reduces electromagnetic crosstalk between internal modules inside the chassis.

Prevents accidental contact with backplane contacts during maintenance and improves operational safety.

Standardises rack appearance and conforms to the system-wide hardware installation requirements.

Front snap-in latches eliminate the need for additional fixing screws.

Corrosion-resistant material enables long-term stable service in industrial control rooms.

Complementary with the three-slot blank T8193 of the same series to cover various vacant slot sealing requirements.

ICS Triplex T8191 Trusted Single Slot Width Shield 6 Units..jpg

Application Fields

Oil & Gas Safety Instrumented Systems (SIS) and Emergency Shutdown (ESD) Systems
Interlock protection control systems for chemical plants
Safety protection cabinets for power generation units
Process interlock control systems in refineries
Process safety systems for coal chemical and fertilizer plants
Monitoring and shutdown systems for long-distance oil & gas pipelines
Safety interlock cabinets for pharmaceutical processes

Operation Instructions

Confirm power is cut off and set the Trusted T8100 controller chassis to a safe shutdown state.
Align the T8191 blank with the guide rails of an empty single slot on the chassis and push it horizontally into position.
Press the front side of the blank inward; the installation is complete once a latch engagement sound is heard.
Visually verify the blank is flush with the chassis panel without looseness or excessive gaps.
For removal, pinch the latches on both sides of the blank and pull outward to extract it smoothly.
If installing I/O modules or processor modules in this slot, remove the blank first before fitting functional modules.
All vacant single slots inside the cabinet must be fitted with blanks. Exposed backplane slots are prohibited for long-term operation.

Working Principle

The T8191 is a passive mechanical accessory with no circuit operation logic. When all chassis slots are occupied by modules, the module housings form an integral shielding and air duct structure. Vacant slots expose the backplane, which causes airflow short-circuiting and creates openings for electromagnetic radiation.Once installed, the blank physically seals slot openings. It prevents airflow short-circuiting to maintain normal cooling paths for chassis fans. Meanwhile, it extends the complete metal shielding loop to suppress external electromagnetic noise and mutual electromagnetic interference between internal modules. It also protects backplane connectors from contamination by dust and foreign debris.

Product Comparison

The T8191 is a single-slot width shielding blank, while the T8193 is a three-slot width shielding blank. Both share identical functions as vacant slot sealing accessories.The T8191 fits one standard slot, enabling flexible filling of scattered empty positions. The T8193 covers three consecutive vacant slots for rapid sealing of large blank areas.Both units are passive and non-hot-swappable mechanical fittings and cannot replace active functional modules such as processors and I/O modules. Thanks to higher dimensional versatility, the T8191 is more widely adopted in routine projects than the T8193.

Compatible Products

T8100 Trusted Controller Chassis
T8270 Chassis Fan Assembly
Full range of Trusted single-slot processors, digital I/O, analog I/O and communication modules
Various Trusted Field Terminal Assembly (FTA) units
Chassis 24V power distribution modules: T8292, T8293

ICS Triplex T8191 Trusted Single Slot Width Shield 6 Units...jpg

Frequently Asked Questions

Q1: Can T8191 be used as a direct replacement for T8193?

A1: No. T8191 is designed for a single slot, whereas T8193 covers three slots. Their physical dimensions are incompatible and cannot be interchanged. Select the model according to the quantity of vacant slots.

Q2: Can the system operate normally without installing T8191 blanks on the chassis?

A2: Power-on operation is possible for a short period, yet the cooling air duct and electromagnetic shielding will be compromised. Long-term operation may lead to module overheating and signal interference faults. This practice violates system hardware installation specifications and is generally rejected during project acceptance.

Q3: Does T8191 support online hot swapping?

A3: Hot swapping under power is not recommended. Insertion and removal may introduce vibration and static electricity to chassis backplane connectors, which risks triggering system fault alarms. System shutdown is advised before operation.

Q4: How many blanks are included in one set of T8191?

A4: Standard delivery specification: 6 Units. One set contains six single-slot shielding blanks.

Q5: Is T8191 applicable to the Trusted expansion chassis T8300?

A5: Yes. T8191 shall also be used to seal single vacant slots on the T8300 expansion chassis.

Q6: Will oxidation on the blank surface affect performance?

A6: Minor surface oxidation has limited impact. Severe oxidation on metal contact surfaces breaks the continuous shielding path; replacement with new units is recommended.

Q7: Is hardware revision differentiation required during procurement?

A7: As a mechanical blank, T8191 has negligible differences between hardware revisions. For ordinary projects, only verify the part number for ordering without checking revisions.

Q8: Is there associated functional software requiring configuration and download for T8191?

A8: Not required at all. It is a passive mechanical accessory with no corresponding configuration parameters in the control system software.