Crowcon Node Controller (New) – S01937/5

Crowcon Node Controller (New) – S01937/5

This module controls the operation of Vortex, gathering the channel readings from the Quad Channel Input Modules. After correcting them for the zero adjustment and calibration it calculates the detector levels and checks them against the alarm limits. Based on the corrected inputs, it drives the displays, calculates voted outputs and drives the Relay Output Modules. It also interprets the power and battery status.

The Node Controller Module contains the configuration of the system, which is stored in non-volatile ferroelectric RAM (FRAM). The Node Controller Module logs event data and controls communications between modules and communications with external devices using the Modbus protocol.

Please Note: The Power LED (LED49) on the Vortex displays (Vortex and Vortex Flameproof) has been changed from the Red/Green device currently in use to a Yellow/Green to provide better colour clarity. The Node Controller module embedded software has been upgraded (to V2.07) to only power the yellow colour when there is a power fault (no battery connected). This will reduce the variance between colours when the viewing angle changes. 

Compatibility:

The new Node Controller software is not compatible with display modules fitted with the original Green/Yellow LED: these display PCBs can be identified by the silk-screen and will be labelled with a part number as shown in the table below.

If a Node Controller or Display Module is replaced on a system and the Vortex Display appears to not power-on, this may suggest a mismatch between the type of Display and the Node Controller. The Node Controller must be replaced to operate with a new display PCB.