Communication Ports; Rs232 Serial Port - Riello 700VA User Manual

I
NSTALLATION AND
After switching over to the bypass due to overloading, the UPS powers the loads off mains power and a
continuous alarm will sound. By reducing the load within the 102% threshold, the UPS returns to normal
operating mode.
When the overload level is too high, the input thermal protection is activated and the UPS will be completely
shutdown.
To restore normal operation, reduce the load so that it is within the 102% threshold and restore thermal
protection by pressing the relevant button on the rear of the UPS and then switch on again.
To restore normal operation following failure due to overloading (continuous beep and load not powered),
reduce the load so that it falls within the 102% threshold. Hold the OFF button down until the continuous beep
stops and then release it. Wait until the UPS is completely shutdown and then switch on again.
C
OMMUNICATION PORTS
The UPS has the following communication ports (see UPS views):

RS232 serial port

COMMUNICATION SLOTS: expansion slots for additional interface cards
RS232 serial port
The RS232 serial port allows the connection of a PC (COM port) by means of a pin-to-pin serial cable
(1)
(provided ). This is a plug & play type connection.
(1)
If a different cable is used, it should be of the pin-to-pin type with a max. length of 3 metres.
(2)
Optoisolated contact max. +35Vdc / 15mA.
(3)
SD: With UPS in operation from battery, the UPS will perform a complete shutdown when +5~15Vdc is applied
(between PIN 3 and PIN 5) for at least 20 seconds.
50
U
SE
RS232 CONNECTOR
6
1 2
PIN No.
1 Contact closed: UPS failure/Bypass/Alarm
2
3 RXD/SD (remote shutdown)
4
5
6 +12Vdc interface power input
7
8 Contact closed: battery low pre-alarm
9 Contact closed: battery mode
7 8 9
3 4 5
SIGNAL
TXD
(3)
GND
PNP Signal
(2)
(2)
(2)