Installation procedure The 6ES7315-2AH14-0AB0 is a CPU module of the Siemens S7-300 series. To install it in an air-cooled rectifier control system, first ensure that the rectifier is de-energised. Carefully insert the CPU module into the standard DIN rail, which is usually installed at a suitable position in the control cabinet, and pay attention to aligning the slot when inserting it to push it ...