TRICONEX 8121 Expansion Chassis, Enhanced Low-Density Configuration

Chassis Assemblies TRICONEX 8121

TRICONEX 8121 Expansion Chassis

The Triconex Tricon Safety Instrumented System is designed to meet the needs of safety and critical control applications in oil and gas, power, refining, chemicals, pharmaceutical and biotech industries.
It is based on industry leading TMR technology, is easy to operate and maintain and provides the lowest total cost of ownership.

Models 3502E, 3503E, and 3505E can self-test to detect stuck-On conditions where the circuitry cannot tell whether a point has gone to the Off state.  Since most safety systems are set up with a deenergize-to-trip capability, the ability to detect Off points is an important feature.  To test for stuck-On inputs, a switch within the input circuitry is closed to allow a zero input (Off) to be read by the optical isolation circuitry.  The last data reading is frozen in the I/O communication processor while the test is running.

Main Processor Modules:

3008 Main Processor, 16 megabytes DRAM  Triconex3008

Communication Hardware and Software:

Tricon Communication Module (TCM), Ethernet (802.3) and serial (RS-232/RS-485) ports

4351A, Triconex4352A,

4351B, Triconex4352B

4353, Triconex4354

Enhanced Intelligent Communication Module (EICM), serial (RS-232/RS-422/RS-485) ports  Triconex4119, Triconex4119A

Safety Manager Module (SMM), Honeywell UCN Interface  Triconex4409

Network Communication Module (NCM), Ethernet (802.3) ports  Triconex4329, Triconex4329G

Main Chassis—houses Main Processors, memory back-up batteries, communication modules and I/O modules.

Expansion Chassis—for additional I/O modules up to 100 feet (30 meters) away from the Main Chassis. In restricted applications, operation up to 1,000 feet (300 meters) is supported.

RXM Chassis—for I/O modules up to 7.5 miles (12 kilometers) away from the Main Chassis.

APPLICATIONS：
Emergency Shutdown (ESD)
Burner Management Systems (BMS)
Fire and Gas Systems (F&G)
High Integrity Pressure Protection systems (HIPPS)
Turbomachinery Controls (TMC)
Critical Control

Chassis Assemblies:
Main Chassis, High-Density Configuration, includes the Tricon printed manuals  Triconex8110
Expansion Chassis, High-Density Configuration  Triconex8111

Expansion Chassis, Enhanced Low-Density Configuration  Triconex8121

Remote Expansion Chassis, High-Density Configuration  Triconex8112

I/O Bus Expansion Cables (Set of 3)  Triconex9000

I/O-COMM Bus Expansion Cables (Set of 3)  Triconex9001

Blank I/O Slot Panel  Triconex8105

Model

Description

3501E/T  115Vac/Vdc Digital Input

3502E  48Vac/Vdc Digital Input

3503E  24Vac/Vdc Digital Input

3504E  24/48Vdc Digital Input

3505E  24Vdc Digital Input

3564  24Vdc Digital Input (simplex)

3511  Pulse Input

3515  Pulse Totalizer

3601E/T  115Vac Digital Output

3603B/E/T  120Vdc Digital Output

3604E  24Vdc Digital Output

3607E  48Vdc Digital Output

3611E  115Vac Digital Output

3617E  48Vdc Supervised Digital Output

3623E/T  120Vdc Digital Output

3624  24Vdc Supervised Digital Output

3625  24Vdc Digital Output

3664  24Vdc Digital Output (Dual)

3674  24Vdc Digital Output (Dual)

3636R/T  Relay Output

3700A  0-5Vdc Analogue Input

3701  0-10Vdc Analogue Input

3703E  0-5, 0-10Vdc Analogue Input

3704E  0-5, 0-10Vdc (high density) Analogue Input

3706A  Thermocouple Analogue Input

3708E  Thermocouple Analogue Input

3720  0-5Vdc Analogue Input

3721  0 to 5 or –5 to +5Vdc Analogue Input

3805E/H  4-20mA Analogue Output

3806E  4-20mA and 20-320mA Analogue Output

3807