ROPAM PMT Phase Presence Controller with Open Collector Output and Galvanic Isolation

The ROPAM PMT is a professional phase presence controller designed for reliable monitoring of single-phase AC mains voltage. It features an open collector output with galvanic isolation, making it ideal for integration into alarm systems, automation, and power monitoring applications. The device monitors 230V AC at 50/60 Hz and provides a clear green LED indicator for phase presence.

Advantages

Galvanic isolation ensures safe and interference-free signal transmission. The open collector output allows direct connection to PLCs, microcontrollers, or alarm panels. Compact surface-mount design simplifies installation. Low power consumption and wide operating temperature range ensure long-term reliability.

Suitable for

• Alarm systems and security panels
• Industrial automation and control
• Power supply monitoring
• Building management systems
• Remote monitoring and telemetry

Key specifications

• Monitored voltage: 230V AC
• Frequency: 50/60 Hz
• Output: Open collector, max 150 mA / 30V DC
• Galvanic isolation
• Power supply: 10-16V DC
• Current consumption: ~15 mA standby, ~25 mA active
• Operating temperature: -10°C to +55°C
• Indicator: Green LED
• Mounting: Surface mount
• Connectivity: Screw terminals

Recommendations

For optimal performance, use a regulated DC power supply within 10-16V. Ensure proper wiring of the open collector output with a pull-up resistor if required. The device is not intended for direct load switching; use an external relay or contactor for high-power loads.