Contrel RI-SM485 Owner's Manual

The Contrel RI-SM485 is a versatile insulation monitor designed to safeguard voltageless networks against insulation failures. It provides a reliable safeguard for various applications like motors, fire-engines, pumps, and lifts. It monitors the insulation resistance by applying a direct-current signal between the line and earth. This allows it to detect and prevent issues arising from humidity or condensation, which can cause insulation degradation and hinder proper operation. The device features an integrated RS-485 interface with Modbus RTU protocol, enabling seamless integration into your existing supervisory systems for comprehensive control and monitoring.

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Contrel RI-SM485 Insulation Monitoring Device Manual | Manualzz

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Key Features

  • Insulation monitor for IT systems
  • Modular DIN rail housing
  • RS-485 interface for remote control
  • TRIP threshold setting
  • Automatic or manual reset

Frequently Answers and Questions

What are the main applications of the Contrel RI-SM485?

It's ideal for safeguarding electrical systems that are typically not in constant use, like motors, pumps, fire-engines, and elevators. These systems are prone to insulation degradation due to humidity and condensation. The RI-SM485 monitors the insulation resistance, preventing malfunctions.

Can I configure the tripping threshold?

Yes, you can adjust the tripping threshold using the dipswitches on the device. The manual details the settings and corresponding values for the threshold.

How does the RI-SM485 communicate with other systems?

It features an optional RS-485 interface with Modbus RTU protocol. This allows you to integrate it with your supervisory systems for remote monitoring and control.
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