Installation Instruction VARIODYN
®
 D1 System 
 
FB 798663.GB0 / 05.19  75 
8  Power Supply 
In general, all devices of a VARIODYN
®
 D1 System are supplied with power via the 230 V rated voltage. This can 
be connected directly (Fig. 43) or via an MSU (Fig. 44). 
 
 
 
 
Fig. 68: 230 V AC direct connection (example) 
 
 
 
 
 
 
 
Fig. 69: 230 V AC cabling via MSU (example) 
 
 
 
 
Assembly and installation work may only be performed when the system is de-energised (voltage free). 
ESD / EMC preventive measures 
Before handling electronic modules, always take suitable precautions to prevent static electricity.