UPSI-1208DPx
Revision 2-0
23
F3 Description of connectors
PIN
FUNCTION
1
Vin +
2
Vin –
3
Vout –
4
Vout +
RS-232
RELAY CONNECTION (RL)
The function of the relay connection is configurable via software. When closing the relay the resistor
value between both contacts is approx. 0 Ω, otherwise they are „open load“.
PIN
FUNCTION
1
Relay contact 1
2
Relay contact 2
2
1
INPUT & OUTPUT (IN & OUT)
V
in
V
out
+
–
–
+
4
3
2
1
To enable PIN 9, PIN 1 has to be
permanently switched to PIN 5 (GND).
PIN
FUNCTION
1
PIN 9 ENABLE
2
TXD
3
RXD
4
DSR
5
GND
6
DTR
7
NC
8
NC
9
+5 V (4.9 V at 20 mA /
4.6 V at 50 mA)
