Wieland Electric PRO COMPACT safety analog modules

Wieland Electric has extended its samos PRO COMPACT safety controller range to include analog input modules. With the SP-SAC, SP-SAR4 and SP-SACR22, it is now possible to detect and further process analog signals for the purposes of safety control. These modules are suitable for use in process engineering applications in the glass, metal or chemical industry or also in specific areas of manufacturing such as conveyor systems, presses and CNC machines.

The modules support sensors with a 0/4–20 mA interface as well as temperature-dependent resistors like Pt/Ni sensors and deliver their analog data to the samos PRO COMPACT safety controller. The analog values can be monitored with ‘Limit’, ‘Range’, ‘Relation’ and ‘Difference’ function blocks in user programs created with the samos PLAN 6 software. These function blocks enable comparative or arithmetic operations involving analog data as well as scaling of the measured current values, and the presentation and visualisation of the analog values in samos PLAN 6.

Integrated USB and Ethernet interfaces enable access to the system, and industrial Ethernet protocols have been included. Further additional gateways for fieldbuses make integration into industrial networks possible. Up to three fieldbus systems can be operated from one samos PRO COMPACT in parallel.

For safe operation of the system, all inputs and outputs have uniquely assigned visual displays that clearly show the operating status at any time. The modules meet all safety standards, including SIL CL 3 according to EN 62061 and PL e/category 4 according to EN ISO 13849-1.