Overview
The design and functionality of the SIMATIC PS307 single-phase load power supply (system and load current supply) with automatic range switching of the input voltage are an optimal match to the SIMATIC S7-300 PLC. The supply to the CPU is quickly established by means of the connecting comb that is supplied with the system and load current supply. It is also possible to provide a 24 V supply to other S7-300 system components, input/output circuits of the input/output modules and, if necessary, the sensors and actuators. Comprehensive certifications such as UL and GL enable universal use (does not apply to outdoor use).
Design
The system and load current supplies are screwed directly onto the S7-300 DIN rail and can be mounted directly to the left of the CPU (no installation clearance required)
Diagnostics LED for indicating "Output voltage 24 V DC OK"
ON/OFF switches (operation/stand-by) for possible swapping of modules
Strain-relief assembly for input voltage connection cable
Function
Connection to all 1-phase 50/60 Hz networks (120 / 230 V AC) through automatic range switching (PS307) or manual switching (PS307, outdoor)
Short-term power failure backup
Output voltage 24 V DC, stabilized, short circuit-proof, open circuit-proof
Parallel connection of two power supplies for enhanced performance