Micro Technic PV-1800 User Manual
Page 11
Users Manual & Installation Guide
PV- 1800: Power supply module with GSM MODEM
Page 11 / 19
Digital outputs (CN2)
The PV1800 has 7 isolated digital outputs connected to a 10pin box header (CN2). The outputs are
configured as PNP outputs with their transistors connected to an external supply voltage
(+V_EXT). The table shows the connector layout:
The output circuitry looks like this:
Attention!
The user has to add proper free-wheeling diodes across inductive loads to protect the output
transistors against high voltages.
The software interface is explained in section PV-1800 register interface.
Pin no Name
Pin no CDB-9F
1
Digital output #0
1
2
Digital output #1
6
3
Digital output #2
2
4
Digital output #3
7
5
Digital output #4
3
6
Digital output #5
8
7
Digital output #6
4
8
-Vext
9
9
+Vext
5
10
NC
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