8.0 PIN-Out Configuration for DB9 Connector
Female Connector PIN No.
1
2
3
4
5
6
7
8
9
DTR = Data terminal ready
RTS = Request to send
RD = Transmitted data
GND = Signal Ground
TX = Received data
*When a remote shutdown signal is applied for one second, the UPS will shut down in three minutes.
VA/Watts
Battery
Load Level
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
English version
RS-232 Signal
9.0 Battery Backup Times
SDU 500, SDU 500-5
Backup Time (Minutes)
---
TX
RD
DTR (+12 V)
GND
---
RTS (-12 V)
---
TX
500/300
YUASA NP7-12
130
55
36
23
18
13
10
9
6
5
Open Collector Signal
---
---
Remote shutdown*
---
GND
Ac failure
---
Battery low
---
SDU 850, SDU 850-5
850/510
YUASA REW45-12
Backup Time (Minutes)
80
37
20
13
10
7
5
4
3
2.5
SDU Series Instruction Manual • 11