Shock-load monitor with dual limits and analogue output
The Unipower HPL530 monitors true motor load and detects sudden load changes (dP/dt) to protect equipment from jams or product surges. Suitable for single-phase or three-phase supplies from 100 to 575 V, it uses a built-in 40 A CT and offers two independent relays: one for high/low limits and another for dP/dt alarms. An isolated analogue output provides continuous load feedback.
Technical Highlights 🔧
- Supply/measuring voltage: 1x100-400 V or 3x100-575 V; frequency 45-65 Hz.
- Current range: 0.5-40 A directly; external CT extends range.
- Dual outputs: two relays (SPDT + SPST) rated 250 VAC/5 A; isolated 0(4)-20 mA analogue output.
- Detection: independent high/low limit and shock-load dP/dt alarm with adjustable thresholds.
- Mounting: DIN-rail; IP rating IP20/IP40; cULus and CE approved.
Benefits ✅
- Protects against both overload and sudden shock loads.
- Dual relays allow separate alarm or control actions.
- Universal voltage range suits most industrial networks.
- Isolated analogue output integrates with PLCs for monitoring and control.
Applications 🚀
- Conveyor belt jam detection and shock load monitoring.
- Pumps and crushers where product surges require immediate response.
- Industrial machinery needing under-load and over-load protection.
The HPL530 offers comprehensive motor protection with dual limit monitoring and shock-load detection, combined with analogue feedback for control systems.
FAQs
- Q: What distinguishes the HPL530 from other load monitors?
A: In addition to adjustable high and low load limits, it includes a dP/dt shock-load alarm for detecting sudden load changes.
- Q: How many relays are available?
A: Two independent relays-one SPDT and one SPST-allow separate alarm or control functions.
- Q: Is there a communication interface?
A: The HPL530 provides an analogue output but does not include digital communication; for Modbus communications consider the HPL500MB.