Operation: External User I/O¶
BDx Module D-Sub 15-pin BDx Interface user I/O connector (female) pin numbering¶
User I/O Pin |
Definition |
Signal Type |
Description |
|---|---|---|---|
1 |
GROUND |
Ground |
Ground to be used as digital input-output reference |
2 |
FAULT |
Indication that the product is in a faulted state. |
|
3 |
INTERLOCK |
Indication that the product is operating normally, typically to be integrated into digital interlock +5V inputs on MagnaDC power supplies |
Digital Outputs¶
The BDx Module has eight digital output signals on its rear 15-pint D-Sub external user I/O. The External User I/O pin layout is defined in Operation: External User I/O.
The digital outputs are used to monitor the Accessory’s internal states. A pin will output +5V when a state is active and 0V when a state is inactive. The maximum output current per pin is 20 mA.
When the BDx Module is in a normal operating state, FAULT (Pin 2) will show 0V and INTERLOCK (Pin 3) will show 5V, both with respect to GROUND (Pin 1).
When the BDx Module is in a faulted state, FAULT (Pin 2) will show +5V and INTERLOCK (Pin 3) will show 0V.
INTERLOCK (Pin 3) is often used to tie in to existing interlock systems and is provided with an ORing diode for protection.
Grounds¶
A ground pin is provided on the BDx Module 15-pin external user I/O connector on Pin 1 to be used as the reference ground for digital outputs.