SIEMENS 3UN21 MANUAL ISO

This combination features three resistance sensors, this way the temperature in every winding of three-phase motors and transformers can be monitored optimal.ДЄll digital devices have safety certification according to IEC 61508/62061 or ISO 13849 up to SIL 1 / PL c as well as EN 14597 and burners according to EN 50156 and are also available as IO-Link version. The function of the digital devices can be extended without wires via a SIL1-certified infrared communications interface with a sensor extension module. The family comprises an analog multi-function device which can be set using rotary and slide switches, and digital devices which can be parameterized via an intuitive LCD display. The temperature is acquired by means of sensors in the medium, evaluated by the device, and monitored for overshoot, undershoot or within a specified operating range (window function). The 3RS2 temperature monitoring relays can be used to measure temperatures in solid, liquid and gaseous media. In this current range two versions are available: 22.5 mm wide: 2x8 A / 1x16 A and 45 mm wide: up to 63 A. It covers a wide operating voltage range from 0 to 800 V.

After the signaling or switching function is performed via an internal relay output, reliable error responses are also possible without Profinet. The 3UG546 DC load monitoring relay can be fully parameterized via Profinet and transfers the measuring and metering values and diagnostic messages via Profinet to the control system.

The relay identifies the direction of current flow so that the quantities of energy stored in or drawn from a battery, for example, can be recorded separately. This means that current, voltage and power can be monitored separately.Д«esides providing detailed error diagnostics, the integrated energy counters, operating hour counters and switching cycle counters can also be read out and reset, making it possible to reliably maintain the system. It monitors the direct current (DC load current circuit), voltage, and actual power for overshooting or undershooting of set limit values in one or two channels. The purpose of the 3UG546 DC load monitoring relay is to monitor DC applications in industrial applications.

Siemens 3un21 manual