This board has 4 relays. The
higher 4 bits of P2 connector are connected to the lower 4 bits of P4
output connector, allowing to do a daisy chain of boards (it could be
another input board or an output board, for instance : set05_04 input board).
It is convenient to have a separated power supply between relays
and control circuit. P1 and P6 are parallel connectors thought to
supply the relays exclusively. Control power supply is coming from P2
or USB connectors.
Connectivity of data is done through set01_04_A cable and relay power supply through P1, P6 and/or USB connectors (polarity of P1 and P6 are at the bottom of the board).
Ranger PCB design files.
Document revision :
20130730 - 2nd version: Updated July 30th, 2013.
20101208 - 1st version: Original document of September 23th, 2012