Technical specifications 
  8.4 Specifications 
Basic Panels 
Operating Instructions, 04/2012, A5E02421799-03 
131 
8.4  Specifications 
8.4.1  Power supply 
 
CAUTION 
 
Safe electrical isolation     
Use only 24 VDC power supply units with safe electrical isolation in accordance with IEC 
60364-4-41 or HD 384.04.41 (VDE 0100, Part 410), e.g. to PELV standard.   
The supply voltage must be within the specified voltage range. Otherwise, malfunction at 
the HMI device cannot be ruled out. 
Applies to non-isolated plant configurations:    
Connect the connection for GND 24 V from the 24 V power supply output to equipotential 
bonding for uniform reference potential. You should always select a central point of 
termination. 
 
The following table shows the permitted rated voltage and the corresponding tolerance 
range.   
 
Rated voltage  Tolerance range 
+24 VDC  19.2 to 28.8 V (–20%, +20%) 
8.4.2  KP300 Basic and KP400 Basic 
Weight    
 
  KP300 Basic mono PN  KP400 Basic color PN 
Weight without packaging  Approx. 250 g  Approx. 510 g 
Display    
 
  KP300 Basic mono PN  KP400 Basic color PN 
Type  LCD mono FSTN  LCD TFT 
Active display area  87 x 31 mm (3.6")  95 x 53.8 mm (4.3") 
Resolution  240 x 80 pixels  480 x 272 pixels 
Possible colors  4 (only backlighting:  
white, red, green, yellow) 
256 
Contrast control  Yes  No 
Brightness control  No  Yes