Learning outcomes
- Explain the key principles of remote-site power, alarms and diagnostics.
- Carry out a structured practical check or configuration task.
- Recognise common faults, risks and evidence needed for diagnosis.
Module 11 · Lesson 4
Remote-site power, alarms and diagnostics
Engineer remote power supplies, batteries, solar, watchdogs, communication health and maintenance access.
Before you begin
Load budget, autonomy target and site environmental data.
Safety: Use site procedures, approved test equipment and competent supervision. Never bypass a protection or interlock without formal control.
Step-by-step learning
- Calculate continuous and surge load, losses and required autonomy.
- Size battery/charger or solar system with ageing and poor-weather margin.
- Alarm mains failure, low battery, enclosure temperature, intrusion and communications loss.
- Provide remote diagnostics and a safe local manual mode.
Ian's practical tips:
- Measure actual site current over time before finalising a solar power budget.
- Remote reset is useful only when it cannot defeat safety or conceal a recurring fault.
Fault-finding questions
- What should be happening, and what evidence proves it?
- Where is the last known correct signal, voltage, state or process condition?
- What changed immediately before the fault?
- Can the system be divided into smaller testable sections?
Practical activity
Create a one-page test record for this lesson. Include expected values, measured results, equipment used, risks controlled, defects found and the final proven condition.