Appendix A Multi-function I/O Extension Card VD500 Series Inverter User Manual
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A.2 Socket Function Description
Table A-1 Socket function description
Socket Code
Function
Function Description
J20
Multi-function
I/O extension
card – control
board
J20 is connection port of main control board and power board,
control board supply power to multi-function I/O extension card
and is electric signal gateway between the 2 parts.
A.3 Jumper Switchover Function Description
Table A-2 Socket connection function description
Jumper
Switchover Code
Jump
Selection
Function Description
24V port
When jump cap plug connect to 24V, OP terminal connect with
+24V, and DI7 ~DI9 with COM short circuit input effective.
J21
COM port
When jump cap plug connect to 24V, OP terminal connect with
COM, and DI7~DI9 with +24V short circuit input effective.
A port
When jump cap plug connect to A port, AI3 (expansion card)
select DC0/4mA-20mA current signal input.
J22
V port
When jump cap plug connect to V port, AI3 (expansion card)
terminal select DC0V-10V voltage input.
