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Appendix A: Connector Pinout & Related Specifications
A.3
Digital Output & Digital Inputs
Fig. 16
Current scheme of the main connector
Characteristic
Type of digital output
Maximum current (ext,source)
Isolation (both DI & DO)
DI voltage range
DI protection
DI OFF state — input voltage range
DI ON state — input voltage range
DI ON state — current range
The Digital Output is activated by an open drain MOSFET transistor driven by an optocoupler. The
maximum current flow inside this transistor has a value above the one specified in the Ewon, in
order to cope with the switching power losses.
The transistor used is in an open drain type with predrive. This means the relay power supply has
to be supplied from an external source to the predrive electronics.
The diagram below shows the external wiring needed for proper operation of the digital output.
A relay has been chosen for this sample application but any load within the specifications can be
used instead.
This is a sink only output to ground (the transistor acts as a switch ground).
2.
During the starting boot process, the DO will be switched ON for a short time (2 seconds)
Flexy 205 Installation Guide
Value
2
Open drain MOSFET
200 mA
1.5 kV
0 to 30 VDC
33 VDC Max
0 to 5 VDC
10 to 30 VDC
From 3,8 mA @ 12 VDC to 8,2 mA @ 24 VDC
26 (32)
IG-0028-00 1.3 en-US
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