Dale Power Solutions Ltd
Salter Road, Eastfield Industrial Estate, Scarborough, North Yorkshire, YO11 3DU, UK
[email protected] | www.dalepowersolutions.com |
+44 (0) 1723 583511
Figure 9 RS232 serial port pin-outs
looking at the socket on the UPS
Figure 10 Contact closure socket
Connections between computer and UPS RS232
Computer
UPS
RDX 2
← TX 3
TDX 3
→ RX 2
GND 5
GND 5
RS232 communications data format
Parameter
Value
Baud rate
2400 bps
Byte length
8bit
End bit
1bit
Parity check Null
Contact closure for external batteries
E400 series units are fitted with a Wieland Electric socket (plug part number 25.340.3453.0) for contact
closure signals to drive an external main breaker and an external maintenance breaker. The connector is
located behind a protective cover just below the black start switch (see Figure 3 on page 14). The signal
connections are as follows:
Pin number
Function
1
+5V
2
Output to main breaker
3
+5V
4
Output to maintenance breaker