20.6.  Analog inputs 
Not electrically separated 
Number of inputs        3 / 0 / 4 unipolar ( IG-NT(x), IG-NT(x)-BB/ IM-NT 
/ IS-NT-BB,IS-NTC-BB ) 
Resolution          10 bits 
Jumper selectable range      V, ohm, mA 
Maximal resistance range  2500  
Maximal voltage range  5 V 
Maximal current range  0 – 20 mA 
Input impedance  180  for mA measuring 
Input impedance  > 100 k for V measuring 
Resistance measurement tolerance     2 %  2  out of measured value 
Voltage measurement tolerance   1 %  1mV out of measured value 
Current measurement tolerance   1 %  0,5mA out of measured value 
20.7.  D+ function 
Max. D+ output current        300 mA 
Guaranteed level for signal Charging OK  80% of supply voltage 
20.8.  Speed pick-up input 
Type of sensor          magnetic pick-up  
Minimum input voltage        2 Vpk-pk (from 4 Hz to 4 kHz) 
Maximum input voltage        50 Veff 
Minimum measured frequency      4 Hz 
Maximum measured frequency      10 kHz (min. input voltage 6Vpk-pk) 
Frequency measurement tolerance      0,2 %  
20.9.  Communication interface 
20.9.1.  RS232 interface 
Maximal distance        10m 
Speed           up to 57.6kBd 
20.9.2.  RS485 interface 
Maximal distance        1000m 
Speed           up to 57.6kBd