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If the signal is from NPN transistor, please set the U-shaped contact tag between +24V and 
PW as below according to the used power supply.   
 
Fig 4-22 NPN modes 
If the signal is from PNP transistor, please set the U-shaped contact tag as below according 
to the used power supply. 
 
Fig 4-23 PNP modes 
4.4 Layout protection   
4.4.1 Protecting the inverter and input power cable in short-circuit situations   
Protect the inverter and input power cable in short circuit situations and against thermal 
overload. 
Arrange the protection according to the following guidelines.