T8480 ICS TRIPLEX

T8480C

The trusted TMR analog output module can connect up to 40 field devices. Triple diagnostic tests are performed throughout the module, including the measurement of current and voltage in various parts of the voting output channel. The faults stuck in the open position and stuck in the closed position are also tested. Each of the 40 output channels is fault-tolerant through an in-module triple modular redundancy (TMR) architecture. Automatic line monitoring of field equipment is provided. This function enables the module to detect open and short circuit faults in field wiring and loaded devices. The module provides on-board sequence of Events (SOE) reporting with a resolution of 1 ms. The output state change triggers the SOE entry. The output status is automatically determined by the voltage and current measurements on the module.

The electromotive force of the power source forms the voltage, and then produces the electric field force. Under the action of the electric field force, the charge in the electric field has directional movement, forming the current. The amount of electricity passing through 1 coulomb per second is called 1 “ampere” (A). The ampere is the basic unit of all electrical properties in the International System of Units. In addition to A, the commonly used units are 1000 amps (kA) mA, microamps (μA)1A=1 000mA=1 000 000μA, electricity: the direction of positive charge directional flow is the direction of current. The microscopic expression of current in a metal conductor is I= NESV,n is the number of free charges per unit volume, E is the amount of electron charge, S is the cross-sectional area of the conductor, and V is the charge velocity.