Virtual fault-finding simulator

Scenario packs

Day 2 · Hardwired field devices

An AHU training panel with two thermistor temperature sensors and a 0–10 V duct pressure transmitter. 7 scenarios: 1 healthy installation and 6 with a hidden wiring, signal or configuration fault.

Day 3 · RS-485 / Modbus network

A six-device Modbus RTU daisy chain. 4 scenarios, each with a hidden network fault.

Scenario names stay hidden until you submit your record, so you diagnose from the evidence. You can choose a scenario or take a random one.

Tools and records

• Multimeter for voltage, resistance, continuity and mA loop current.
• Signal injector to drive 0–10 V or mA into a BMS input and check the scaling.
• Cable proving with a test link, a lever connector block and a wander lead.
• Drawing view linked to the rig: tap a terminal on either to highlight it on the other.
• Point-to-point and defect sheet, downloadable as an A4 PDF.

How-to videos

Four short how-to videos, with on-screen captions and a text version of each, are on Day 2 of the online course for enrolled delegates:

1. Getting started: scenario packs and the screen layout: Choose a scenario pack and scenario, confirm what you have identified, and find your way around the bench, the BMS front end, Restore and Record.
2. Reading a 0–10 V signal, the wiring drawing and the signal injector: Read the duct pressure transmitter's 0–10 V output, compare it with the front end, open the wiring drawing, then open the disconnect link and inject a test signal.
3. Proving a cable end to end and testing each core to earth: Isolate the sensor loop, prove the pair end to end with a test link and then a connector block, confirm OL with the link off, and test each core to earth.
4. Restoring the installation and recording your result: Put everything back using the Restore checklist, record your diagnosis and notes, submit for scored feedback, then fill in and download the point-to-point sheet.