Description
ABB TA924F Terminal Resistor Module
The ABB TA924F (Order Code: 3BDH001031R0001) is a dedicated dummy/cover module designed for the ABB Freelance Distributed Control System (DCS) S900 I/O platform. It protects empty slots on the TU921F terminal unit baseplate from dust, physical damage, and environmental exposure.
Product Overview
The TA924F serves as a protective place-holder in S900 remote I/O sub-racks. It installs onto unpopulated terminal units to preserve IP20 protection ratings, maintain proper backplane ventilation, and keep field wiring areas free from airborne debris.
Technical Specifications
| Feature | Details |
| Product Model | ABB TA924F |
| Order Code | 3BDH001031R0001 |
| Product Family | ABB Freelance / S900 I/O System |
| Type | Dummy / Empty Cover Slot Module |
| Compatible Base Unit | TU921F Terminal Unit |
| Protection Rating | IP20 |
| Mounting Type | Direct snap-on to TU921F I/O slot |
| Operating Temperature | -20°C to +60°C |
| Dimensions (W x H x D) | Approx. 45 mm x 104 mm x 123 mm |
| Weight | Approx. 0.12 kg |
Key Advantages
- Environmental Protection: Shields exposed internal backplane contacts from dust, moisture, and conductive contaminants.
- Airflow Optimization: Ensures consistent convective cooling across active S900 I/O modules by maintaining designed cabinet geometry.
- Safety & Compliance: Prevents accidental touching of internal electronic connectors to help maintain IP20 touch safety standards.
- Future Expansion Readiness: Keeps spare slots clean and ready for seamless hot-swapping or adding extra I/O modules later without system shutdown.
Cautions & Operational Notes
- Non-Functional Electronics: The TA924F contains no active circuit boards or I/O processing logic; it functions solely as a mechanical cover.
- Proper Installation: Ensure the module snaps firmly into the TU921F terminal unit to verify a full protective seal over the backplane bus connector.
- Hazardous Area Check: Verify ambient temperature ranges and specific ATEX/IECEx panel requirements when operating S900 racks in Zone 1 or Zone 2 hazardous areas.
Typical Applications
- Process Automation Racks: Installed on spare I/O slots in chemical, oil & gas, pharmaceutical, and water treatment control cabinets using ABB Freelance DCS.
- Phased System Commissioning: Used to cover unpopulated slots on S900 terminal units prior to secondary plant expansion phases.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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