What is the max. load that can be driven by the analog output driver of the BBI 14423 : STW Technic, LP

What is the max. load that can be driven by the analog output driver of the BBI 14423 Print

Modified on: Wed, 19 Aug, 2015 at 3:46 PM

The supply Voltage for the output driver U(dr) of the 14423 is calculated as follows:
U(dr) = ~13V when the controller's supply Voltage level UB > 15V
U(dr) = UB - 2V when the controller's UB < 15V

The Voltage drop across the output driver is:
~2.8V
Calculation of the max. Resistance connected to the analog current output:
R <= (U(dr) – 2.8V) / I
Example:
UB > 18V => U(dr) = 13V
R <= (13V – 2,8V) / 0.130A
R <= 78 Ohm
Ub = 12V => U(dr) = (12V – 2V) = 10V
R <= (10V – 2,8V) / 0.130A
R <= 55 Ohm

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What is the max. load that can be driven by the analog output driver of the BBI 14423 Print

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