Designed for critical applications, the Trident performs predictably in a hostile industrial environment. The specifications listed on the table to the right confirm this built-in reliability. However, due to the number of diverse items that make up a Trident system, not all of the listed specifications apply to every item. Please contact Triconex to obtain the specifications for particular items.

Dimensions and Clearances

The dimensions given on the figure to the right are predicated on the vertical mounting of Trident baseplates on a panel.

The dimensions include the following:

• The MP Baseplate, AI HART Baseplates, and AO HART Baseplates are 9 inches (229 millimeters) wide by 9.79 inches (249 millimeters) long

• I/O Baseplates for all types of I/O modules are 7.0 inches (178 millimeters) wide by 9.79 inches (249 millimeters) long

All Trident I/O modules have the same dimensions, which are:

• Height = 8.65 inches (220 mm)

• Width = 1.75 inches (44 mm)

• Depth = 6.65 inches (169 mm)

Clearance should always allow adequate air flow around Trident modules. For typical applications, there should be at least 5 inches (15 centimeters) of clearance between active modules and the walls of the enclosure.

The DIN rails and baseplate assemblies should be arranged on the panel to allow for the installation of wiring channels (such as Panduit) along the left side of vertical columns.

Main Processor Module

Every Trident system is controlled by three Main Processor (MP) Modules that reside on a single baseplate. Each MP Module acts as one channel of the triplicated Trident system and provides the following features:

• An RS-232 or RS-485 Modbus port for direct TMR connection to a DCS (or other external host) without the need for any other modules

• A 10BaseT Ethernet (IEEE 802.3) port for connection to the TriStation 1131 programming workstation

• A lock lever that indicates whether the module is properly locked on the baseplate

Product Specifications

Alarm Indicators

The Trident fault-monitoring circuitry is able to detect and signal an alarm for all single faults and most multiple faults. The following alarm indicators are on the front panel of each MP:

• The Field Power alarm indicates loss of field power or faulty field power supply

• The Logic Power alarm indicates a missing or faulty system power supply

• The System Alarm indicates problems with the application or system integrity

• The Program Alarm indicates problems that are defined by the user-written application

• The Over Temperature alarm indicates when the module is over 183° F (84° C)

System Status Indicators

The system status indicators identify the processing state of the module. The status indicators include the following:

• The Pass indicator identifies when the module is operating normally.

• The Active indicator blinks once per scan when executing an application.

• The Fault indicator identifies when the processor has an internal fault.

Other Indicators

Other indicators on the MP include the following:

• Mode indicators (Remote, Run, Program, and Halt) identify the operating state of the entire Trident system.

• Communication indicators that identify the type of communication occurring

Physical Description

Each MP provides 16 megabytes of DRAM for the user-written application, sequence-of-events (SOE) and I/O data, diagnostics, and communication buffers.

The three MPs compare their respective data during every scan using the TriBus, a high-speed, fault-tolerant inter-processor bus. The MPs commu nicate with the I/O modules over a TMR HDLC I/O bus that operates at 2 megabits per second.

In addition to the TriStation and Modbus ports and alarm connectors, the MP Baseplate provides redundant, 24-volt fused logic power connectors. Logic power supplied here can operate the MPs and carry to the I/O Baseplates as well, so that no other logic power supplies are needed for the column.
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