Controls Solid-State Switching Devices Introduction Overview 3RF21 3RF20 3RF23 3RF29 Order No. Page SIRIUS SC solid-state switching devices Solid-state relays 22.5 mm solid-state relays, Widths of 22.5 mm and 45 mm 3RF21, 4/7 45 mm solid-state relays 3RF20 4/10 Compact and space-saving design Zero-point switchin version Mounting onto existing heat sinks Solid-state contactors Complete unit comprising a solid-state relay and an optimized heat 3RF23 4/11 Solid-state contactors sink,ready to us Compact and space-saving design Versions for resistive loadszero-point switchin and inductive loadsinstantaneous switchin Special designsLow Nois andShort-Circuit Resistan For extending the functionality of the 3RF21 solid-state relays and Function modules the 3RF23 solid-state contactors for many different applications: Converters For converting an analog input signal into an on/off ratio 3RF29 00-0EA18 4/22 Load monitoring For load monitoring of one or more loads (partial loads) 3RF29 20-0FA08, 4/23 3RF29 .0-0GA.. Heating current monitoring For load monitoring of one or more loads (partial loads) 3RF29 ..-0JA.. 4/23 Power controllers For supplying the current by means of a solid-state switching 3RF29 .0-0HA.. 4/24 device depending on a setpoint value Closed-loop control: Full wave control or generalized phase control Siemens LV 1 2006 4/2 4Solid-State Switching Devices General data Overview SIRIUS SC solid-state switching devices silent switching SIRIUS SC is also ideally suited to noise- sensitive areas such as offices or hospitals. Solid-state relays Solid-state contactors The most reliable solution for any application Function modules Compared with mechanical switching devices, our SIRIUS SC solid-state switching devices stand out because of their consid- SIRIUS SC for almost unending activity erably longer service life. Thanks to the high product quality, Conventional electromechanical switching devices are often their switching is extremely precise, reliable and above all insus- overtaxed by the rise in the number of switching operations. ceptible to faults. With its variable connection methods and a A high switching frequency results in frequent failure and short wide spread of control voltages, the SIRIUS SC family is univer- replacement cycles. However, this does not have to be the case, sally applicable. Depending on the individual requirements of because with the latest generation of our SIRIUS SC solid-state the application, our modular switching devices can also be quite switching devices we provide you with solid-state relays and easily expanded by the addition of standardized function mod- contactors with a particularly long service life for almost ules. unending activity even under the toughest conditions and under Always on the sunny side with SIRIUS SC high mechanical load, but also in noise-sensitive areas. Because SIRIUS SC offers even more: Proved time and again in service The space-saving and compact side-by-side mounting SIRIUS SC solid-state switching devices have become firmly ensures reliable operation up to an ambient temperature of established in industrial use. They are used above all in +60 C. applications where loads are switched frequently mainly with Thanks to fast configuration and the ease of installation and resistive load controllers, with the control of electrical heat or the start-up, you save not only time but also expenses. control of valves and motors in conveyor systems. In addition to its use in areas with high switching frequencies, thanks to its Type Solid-state relay Solid-state Function module contactor 22.5 mm 45 mm Converter Load monitoring Heating Power current controllers Basic Extended monitoring Usage Simple use of existing solid-state relays -- -- -- -- -- CompleteReady to us -- -- -- -- -- Space-saving -- -- -- -- Can be extended with modular function modules -- -- -- -- -- -- Frequent switching and monitoring of loads and -- -- -- -- solid-state relays/solid-state contactors Monitoring of up to 6 partial loads -- -- -- -- -- -- -- Monitoring of more than 6 partial loads -- -- -- -- -- -- -- Control of the heating power through an analog -- -- -- -- -- -- input Power control -- -- -- -- -- -- -- Start-up Easy setting of setpoints withTeac button -- -- -- -- -- Remote Teac input for setting setpoints -- -- -- -- -- -- -- Mounting Mounting onto mounting rails or mounting plates -- -- -- -- -- -- -- Can be snapped directly onto a solid-state relay -- -- -- or contactor For use withCoolplat heat sink -- -- -- -- -- -- Cable routing Connection of load circuit as for controlgear -- -- Connection of load circuit from above -- -- -- -- -- -- -- function is available function is possible Siemens LV 1 2006 4/3 44