The Unipower HPL540 is a specialised motor load monitor with automatic direction reversal, designed for conveyors and process machinery. When a blockage or overload is detected, it initiates a pre-programmed reverse cycle to attempt automatic fault clearance. If the fault persists and high load is detected in reverse mode, the HPL540 trips and signals for operator attention.
⚙️ Technical Highlights:
- Voltage Range: 100–575V AC (single or three-phase)
- Current Range: 0.5–40A internal, up to 600A with external CT
- Relay Logic: Forward (Relay 1), Reverse (Relay 2) with load-increase detection
- Timers: Start (Ts), Reverse (Tr), Pause (Tp), Reverse Duration
- Analogue Output: 0(4)–20mA, configurable for alarm or load indication
✅ Key Benefits:
- Automatic jam recovery and load fault management
- Trips if the blockage cannot be cleared, preventing equipment damage
- Programmable reverse retries to protect mechanical components
- Real-time shaft power measurement for accurate load profiling
🚀 Typical Applications:
- Conveyor and auger systems
- Bulk material handling and process machinery
- Transport lines and feeders prone to blockages or jams
Minimise downtime and protect equipment with the Unipower HPL540’s intelligent load monitoring and automatic reversal control — available from Charter Controls with next-day delivery from UK stock.
FAQs
- Q: What does “reverse relay logic” mean on the HPL540?
A: Reverse relay logic activates the reverse relay when a load increase indicates a blockage. The HPL540 attempts to clear the obstruction by reversing the motor. If high load is detected during reversal, it trips and signals a fault.
- Q: Which applications suit the HPL540 best?
A: Ideal for conveyors, feeders, and transport systems where blockages or high-load conditions can damage equipment or interrupt processes.