Three-Phase Load Monitor with 3 Optocoupler Outputs is a kW measurement transducer and load monitor designed for monitoring three-phase asymmetric motor loads, including loads after frequency inverters. It provides two independent load limits, dP/dt shock-load supervision, analogue outputs and three optocoupler alarm outputs.
🔧 Technical Highlights:
- Measures power on three-phase asymmetric loads, including loads after frequency inverters.
- Suitable for 3 x 230 V to 3 x 575 V mains voltage ranges, with max. 3 x 600 V measurement voltage.
- Frequency range 10 Hz to 1 kHz for PWM inverter applications.
- Direct current measurement up to 80 A using internal CTs and ten selectable current ranges.
- Two independent load-monitor limits plus dP/dt shock-load supervision.
- Three optocoupler alarm outputs, Out1, Out2 and Out3, rated max. 30 V / 30 mA.
- Analogue outputs configurable as 0(4)-20 mA, max. 300 Ω, and 0(2)-10 V, min. load 10 kΩ.
- 24 V DC +/-10% supply and RS232C setup via 382Mon software.
✅ Benefits:
- Monitors motor load where waveform and frequency vary after an inverter.
- Supports separate load limits for clearer alarm handling.
- Provides optocoupler alarm outputs instead of relay-output switching.
- Allows analogue output scaling for control-loop or indication use.
- Improves setup consistency through PC-based parameter configuration.
🚀 Applications:
- Three-phase motor load monitoring.
- Frequency-inverter output monitoring.
- Pump, conveyor, mixer and machine-load supervision.
- Shock-load detection using dP/dt supervision.
- Industrial panels requiring analogue load signals and isolated alarm outputs.
Built for reliable three-phase load measurement with optocoupler alarm signalling and configurable analogue outputs.
FAQs
- Q: What alarm outputs does this load monitor provide?
A: It provides three optocoupler digital alarm outputs, Out1, Out2 and Out3, rated max. 30 V / 30 mA.
- Q: Can it monitor loads after frequency inverters?
A: Yes. It is designed to monitor three-phase asymmetric loads after frequency inverters across a 10 Hz to 1 kHz PWM frequency range.