PCI-6515 Digital input LOAD question

[T.Rasol]

Good Morning everyone,

I want to use the PCI-6515 board as a digital input to replace an array of resistors and LEDS.

This array shows us if current if flowing or not.

Current is flowing from the each line of the connector towards each line of the array. 

It looks like this:

I have measured the current, it is slightly below 9mA.

With the pci-6515, I will replace each line made of an LED and a resistor with the digital input channels.

I have checked the specs of the PCI-6515 with the datasheet.

Input Voltage max is 30V. At this voltage max current is 12.5mA.

Input current max will be 10.8 mA at 26V.

The impedance of the PCI-6515 per line is = 2400 Ohm.

My concern is over the fact that the PCI-6515 is about to draw more current from the source than my initial circuit :

Example for 1 line:

To reduce current drawn from source, I figured maybe I can add a resistor up front as suggested in the picture below:

That way I get the same configuration as initially.

Can you please tell me if that makes any sense ?

Did I forget anything, or is it possible at all ?

Thanks a lot,

All the Best.