single-phase control relay includes a selectable memory function and an integral LED indicating control status. The screw trimmers enable simple and precise threshold settings, and it provides automatic shutdown management and fault information for quick fault identification and troubleshooting. Basic protection Applications that can benefit from more basic protection can turn to PowerPacT Circuit Breakers rated from 15 to 125 A and available with one-, two-, three-, and four-poles. These thermal magnetic circuit breakers have positive contact indication and deliver isolation in compliance with IEC/EN60947-1 and IEC/EN60947-2 standards for “low- voltage switchgear and control gear.” Model B JL 16020 is a 20 A single-pole unit with a rated operational voltage of 240 V AC 50/60 Hz according to UL 489. Its continuous current rating is 80% of the maximum rating, and it is rated “service breaking” according to IEC 60947-2 (Figure 5). The VisiTrip LED readout makes it easier to see which circuit breaker has tripped in the enclosure or panel. It also has a QR code to access information, including the instruction manual, part numbers, and CAD drawings.
A bus coupler like the TPRBCEIP is the core module that provides internal communication with the TeSys island modules via ribbon cables. It’s also the connection point between a TeSys island and an external automation system using EtherNet/IP or Modbus TCP communication. An embedded web server supports diagnostics and maintenance. It includes one RJ45 service port over Ethernet, a micro SD card port, and a port for the internal bus interconnecting the modules of the island. A typical configuration includes (Figure 6):
A. Bus coupler
B. Analog input / output module
Figure 5: Circuit breakers like this offer positive contact indication and meet the isolation requirements of IEC/ EN60947. (Image source: DigiKey)
C. Digital input / output module
D. Voltage interface module
E. Standard starters
F. Safety integrity level (SIL) starter
Integrated fieldbus nodes
TeSys is a digitized IIoT-connected load management solution that acts as an integrated node in a Fieldbus network and includes the modules needed to implement an IIoT-ready machine. It’s based on multifunctional devices and avatars for industrial applications with loads up to 80 amps and can speed design, wiring, and commissioning times.
G. SIL interface module
H. Power interface module
Exemplary TeSys island modules include: ■ LC1DT406BL 40 A, 4-pole, normally open, TeSys Deca contactor with IEC60335-1 compliance for industrial and HVAC systems
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