Installation and Connection
Digital inputs
For each digital input group the related voltage input range has to be
parameterized. Wrong switching thresholds can result in
malfunctions/wrong signal transfer times.
The digital inputs are provided with different switching thresholds (can be parameterized) (two AC and five DC input
ranges). For the si
x grouped (connected to common potential) in
puts and the two non-grouped inputs the following
switching levels can be defined:
24V DC
48V DC / 60V DC
110 V AC/DC
230 V AC/DC
If a voltage >80% of the set switching threshold is applied at the digital input, the state change is recognized
(physically “1”). If the voltage is below 40% of the set switching threshold, the device detects physically “0”.
When using DC supply, the negative potential has to be connected to the
common terminal (COM1, COM2, COM3 - please see the terminal marking).
35
MRU4
DOK-HB-MRU4-2E
