Incoming supply & protection
Isolators, fuses, circuit protection, control transformers and panel supply arrangements.
Control Panels
Electrical Control Panels
Electrical fault investigation, modification and verification for commercial control panels and connected equipment.
ElectroLogic works on the physical electrical and control layer: panel supplies, protective devices, relays, contactors, timers, drives, terminals and field wiring—not PLC, BMS or other software programming.
Panel-level electrical support
Understand the panel and the equipment it controls.
A panel fault may originate in its incoming supply, control voltage, protective device, relay logic, field wiring or the connected equipment. Diagnosis follows the circuit and intended operating sequence rather than replacing components by assumption.
ElectroLogic investigates, repairs and modifies agreed electrical control infrastructure in commercial buildings and plant environments, with safe isolation, clear identification and practical handover.
“Prove the electrical path before assuming a controller fault.”
Technical capabilities
Electrical work inside and around the panel.
Control power supplies
AC and DC control supplies, transformers, power units and associated protective devices.
Relays & contactors
Control relays, contactors, auxiliary contacts and associated control circuitry.
Motor starters & control circuits
Direct-on-line, reversing and star-delta starter circuits, control components and associated connections.
Overloads & timers
Motor overloads, timers, monitoring relays and other panel-mounted control components.
Safety & interlock circuits
Emergency stops, safety interlocks, enable circuits and hardwired operating conditions.
Inverters & drives
Electrical supplies, enable circuits, run and fault signals, and panel interfaces for inverters and VSDs.
Terminals & control wiring
Termination, tracing, repair, alteration and identification of internal and external control wiring.
Sensors & field connections
Electrical checks of connected sensors, switches, actuators, status contacts and field cabling.
Panel modifications
Agreed component replacement, wiring alterations, additional interfaces and changes for equipment or operational requirements.
Drawings & labelling
Practical support with panel identification, terminal references, labels and available drawings.
Functional testing & handover
Controlled testing of the completed electrical path, recorded findings and safe reinstatement.
Panel fault diagnosis
Trace the path from supply to response.
A stopped panel-controlled system is not automatically a failed controller. We check the incoming power, control supply, protection, command, relay or contactor response, field connection and expected feedback.
Find the point where the electrical path stops.
Lost incoming supply
Blown fuse or operated protective device
Failed control power supply
Open overload or safety circuit
Failed relay or contactor
Timer or monitoring-relay fault
Drive or inverter condition
Broken terminal or control wire
Failed sensor or status contact
Field-device or equipment fault
PLC, BMS or drive-program condition requiring specialist support
- 1
Supply
Verify incoming power, isolation and protection.
- 2
Control power
Check the control voltage, fuses, transformers and power units.
- 3
Command
Confirm the required enable, interlock or operating command is present.
- 4
Panel hardware
Test relays, contactors, overloads, timers, drives and connected terminals.
- 5
Field & response
Check field wiring, connected equipment, feedback and final operation.
Panel and connected equipment
Work beyond the enclosure where the circuit requires it.
Panel investigation is linked to the connected equipment. Electrical support can extend from the panel supply and control hardware to field devices, motor circuits and the relevant operating feedback.
Panel power & protection
- Incoming isolators
- Fuses and protective devices
- Control transformers
- AC and DC power supplies
Control hardware
- Relays and contactors
- Overloads
- Timers and monitoring relays
- Terminal assemblies
Motors & drives
- Motor starters
- Inverters / VSDs
- Enable and fault circuits
- Run and status feedback
Field connections
- Sensors and switches
- Actuators
- Field wiring
- Connected fans, pumps and plant
Operational panel work
Careful testing around active buildings and plant.
Controlled isolations
Safe isolation and reinstatement planned around the equipment and the building operation.
Traceable testing
Methodical checks of supplies, components, signals and the intended response.
Technical coordination
Working with FM teams, mechanical contractors, controls engineers and OEM specialists where required.
Clear findings
Recording what was tested, what was repaired and where further specialist work is needed.
Hardware & software boundary
Separate the panel fault from the program fault.
ElectroLogic can establish whether a fault is in the electrical supply, panel hardware, I/O wiring, field equipment or a connected interface. Where PLC, BMS, drive or specialist-controller programming is required, findings can be provided to the appropriate software or OEM specialist.
As a disciplined diagnostic principle: prove the hardware path before changing the software.
Incoming supply available
Control voltage proven
Protection and overloads healthy
Command signal present
Relay or contactor operating
Drive interface available
Field wiring intact
Equipment response and feedback confirmed
Technical support process
Understand, isolate safely, test, prove and hand over.
- 01
Understand
Confirm the reported fault, panel function and required equipment response.
- 02
Isolate safely
Plan controlled isolation, access and safe reinstatement around the live environment.
- 03
Test
Trace the relevant supply, control circuit, component, field connection and feedback path.
- 04
Repair or modify
Complete agreed electrical repairs, component replacement or panel alterations within scope.
- 05
Prove & hand over
Functionally test the completed work, label where appropriate and record next actions.
Technical support
Need help with a control-panel fault or alteration?
Share the panel type, connected equipment, symptoms and available drawings. ElectroLogic can review the electrical and control-panel requirement and establish the next practical step.