Monitored Digital Input Modules（ICS Triplex）

Monitored digital input modules provide input sensing for 16 field input devices. The field powered (Type F) modules are suitable for inputs that are directly powered from an external field power supply. Two types of modules are available for inputs powered from 24 to 48 VDC and 120 VAC/DC. With a line monitor device installed at the field switch, monitored digital input modules detect input switch status and field wiring open and short circuits (VDC powered inputs only). Input and line status are reported back to the controller for use in application program logic.

Monitored Digital Input Modules Features

1.Sixteen input points, powered from external field supply.

2.Fault tolerant operation when connected in parallel with another module of the same type.

3.Hot-replaceable.

4.Complete, automatic testing of all input circuits.

5.Automatic line monitoring detects open and short field wiring faults.

6.Individual front panel indicators on each module show the module’s active/fault and power status, as well as input status and line fault status for each point.

7.2500 volt minimum electrical isolation between field and logic circuits.

8.TÜV certified, Risk Class 5.

Monitored Digital Input Modules, Type F (T3411F, T3418F)

Two or three monitored digital input modules can be connected in parallel to obtain fault tolerant input sensing. In these fault tolerant configurations, a failed module can be removed and replaced without interrupting the input signals. The module requires connection to the same field power supply that powers the field switches. This field power is internally regulated by the module to power the module’s input interface circuits.