Australian Industrial Control Systems / Since 1978
Built for the moments when critical equipment cannot fail.
Field-proven speed monitoring, engine protection and control modules for mining, quarry, fixed plant and heavy mobile equipment.
Field Risk / Protection Layer
Visibility before failure. Control before damage.
Add a clearly defined monitoring layer where a PLC signal, operator observation or basic alarm alone does not provide enough warning.
Conveyor & shaft speed
Detect stopped shafts, belt slip, underspeed, overspeed and mismatched speed before the fault escalates.
Crusher & screen protection
Use shaft or RPM signals to support alarms, sequencing, interlocks and controlled shutdown.
Engine & generator faults
Monitor oil pressure, temperature, coolant and alternator conditions on critical diesel equipment.
Industrial Control Architecture
Detect. Decide. Respond.
Bolec modules turn equipment or engine signals into defined alarm, relay, interlock or shutdown outputs.
Detect
Frequency, RPM, speed and engine-condition inputs.
Decide
Configured thresholds, delays, hysteresis and logic.
Respond
Warning, relay, interlock or shutdown circuit.
The final safety function, redundancy and fail-safe arrangement must be assessed by the system designer.
Mining & Heavy Equipment Range
A broader protection range for critical equipment
Speed, engine, level, alarm, timing and signal-control modules selected for fixed and mobile plant applications.
Flagship speed protection SS501
Dual-Channel Speed & RPM Switch
Independent frequency monitoring for conveyors, crushers, pumps, shafts and rotating equipment.
- Zero-speed, underspeed and overspeed monitoring
- Two inputs and two relay outputs
Compact speed control SS301
Multi-Range Speed/Rev Switch
An adjustable speed switch for a single RPM or frequency threshold in retrofit and OEM systems.
- Speed-dependent alarm or control output
- Adjustable switching hysteresis
Complete engine protection BEM502
Engine Protection Panel
A watchdog panel for diesel pumps, compressors, generators and stationary industrial engines.
- Oil pressure and temperature protection
- Coolant and alternator monitoring
Fail-safe engine monitoring EM301
Fail-Safe Engine Monitor
Multi-input monitoring for mobile equipment, power packs and space-limited retrofit installations.
- Multiple engine-condition inputs
- Fail-safe wiring and shutdown output
Coolant & liquid level WL701
Low Coolant Level Alarm
Engine and equipment protection for low coolant or conductive liquid-level conditions.
- 12/24V mobile and industrial applications
- Alarm or control-circuit integration
Operator warning systems EA101
Three Gauge Alarm
Add an audible or visible alarm to three monitored gauge or sender conditions.
- Three monitored channels
- Suitable for plant and mobile equipment
Single-channel warning FL301
Single Gauge Alarm
A focused warning module for a critical gauge or sender input on industrial equipment.
- Compact retrofit format
- Clear alarm output for one condition
Control sequencing TM301
Multi-Function Timer
Configurable timing control for alarms, delays, sequencing and auxiliary circuits.
- Multiple timing functions
- 12/24V control-system integration
Signal conditioning ERB205
Electronic Ratio Box
Correct or convert a varying frequency signal for instrumentation and control applications.
- Fixed-ratio signal conversion
- Useful for legacy and retrofit systems
Pump protection WL701 DRY RUN
Solar Pump Dry-Run Protection
Conductive level detection designed to help protect pumps in demanding water conditions.
- Low-water and dry-run detection
- Suited to remote pumping applications
Applications
Protection for fixed plant, mobile equipment and OEM builds
Conveyors & feed belts
Zero-speed, slip, underspeed and sequencing signals.
Crushers & screening plants
RPM monitoring for alarms, interlocks and shutdown logic.
Pumps & dewatering systems
Rotating-equipment and diesel-engine protection.
Backup generators
Oil, coolant, temperature and alternator monitoring.
Mobile plant & service vehicles
Speed lockouts, warnings and auxiliary-equipment control.
OEM & panel builders
Compact modules for new builds and legacy upgrades.
Application Support
Tell us what must be monitored and what should happen during a fault.
We can help narrow down a suitable starting point for a retrofit, panel build or OEM application.
Request application supportFrequently Asked Questions
Mining speed and engine protection
Can the SS501 detect a stopped or slipping conveyor?
Yes. With a suitable speed sensor and correctly configured thresholds, it can monitor zero speed, underspeed, overspeed or two separate speed conditions.
What is the difference between the SS301 and SS501?
The SS301 is suited to a single adjustable speed/frequency threshold. The SS501 provides two channels and more flexible multi-stage monitoring.
Can a speed switch directly stop a large motor?
It should normally operate an appropriately designed control, interlock or shutdown circuit. The motor power circuit and safety architecture must be designed by a qualified system designer.
Can engine protection be used on pumps and generators?
Yes. Product selection depends on the available engine signals, supply voltage and the required alarm or shutdown response.
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