Moons' MBDV Series - Page 48

48
Rev. 2.0
07/27/2023
MBDV Hardware Manual
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Digital Input and Output Wiring Instructions
The MBDV-2X-520AC has 4 optically isolated, single-ended inputs with a common voltage (COM)
point for each axis. These inputs require that they be powered separately. If using a PLC, you may
use the 24 V output from the PLC. If connected to a relay or mechanical switch, a 24 VDC power
supply will be required. The maximum withstand current for each input is 20 mA.
What is COM?
Common (COM) represents an a common voltage level for inputs (XCOM) or outputs (YCOM). If
using sourcing signals (PNP), COM should be connected to ground (power source negative). If
using sinking signals (NPN), COM should be connected to positive voltage (positive probe from
power source).
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The internal block diagram of X1-X4, for each axis, is shown in the gure below.
1
1_X1
2
1_X2
3
1_X3
4
1_X4
5
1_XCOM
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
2.4KΩ
9
10
11
12
13
2_X1
2_X2
2_X3
2_X4
2_XCOM