EmpirBus Connect-50, Руководство пользователя, Страница: 8 / 16

7/15 EmpirBus Connect-50 User manual Ver. 1.33
6.1.2 Digital input – positive
Connect the switch between the source and the desired channel. See data sheet for measuring range
NOTE: The input signal source and the Connet-50 must have common ground.
6.1.3 Digital input – common line
It is possible to have a switch and a LED indicator on the same channel using the circuit below. The
commonline channel then needs to be connected to channel 3, 4 or 11.
The value of the resistor R can be calculated using:
R = (Voltage supply – LED forward voltage) / 0.020A
LED forward voltage (Vf) = nominal 1.7 – 2.2 V
Example 12V system:
14.5V – 1.7V = 12.8V
12.8 / 0,020 = 640Ω minimum
(680Ω or higher recommended)
6.1.4 Analog input – resistance
Connect the resistive sensor directly between “Sensor GND” pin 32 and the desired channel.
6.1.5 Analog input – voltage
Connect the voltage source to the desired channel. See data sheet for measuring range. NOTE: The
input signal source and the Connect-50 must have common ground.