Salicru SLC TWIN RT3 Mode D'emploi page 55

The 3 kVA models also have a 16 A IEC connector that
allows a load of the total power of the unit to be connected.
5.3.4. Connection of communication ports.
5.3.4.1. RS232 and USB.
The communications line (COM) consists of a very low
voltage safety circuit. To ensure the quality, it must be
installed separately from other lines that carry dangerous voltages
(power distribution line).
The RS232 interface and the USB are useful for the monitoring
software; RS232 will only be used for updating the firmware.
It is not possible to use the RS232 and USB ports at the same time.
The DB9 connector supplies the RS232 signals and the normally
open (NO) potential-free contacts via relays.
The maximum voltage and current applicable to these contacts will
be 30 V DC and 1 A.
The RS232 port consists of serial data transmission, so a large
amount of information can be sent via a communication cable of
just 3 wires.
The USB communication port is compatible with the USB 1.1
protocol for communication software.
Pin
1
2
3
4
5
6
7
8
9
Tab. 6. DB9 connector pinout, RS232.
Pin
1
2
3
4
Tab. 7. USB connector pinout.
5
9
Fig. 23. DB9 connectors for RS232 and USB.
USER MANUAL
Signal Description Function
NO
UPS: transmit to an
RS232 TX Output
external device
UPS: receive from an
RS232 RX Input
external device
NO
Common on the
GND
chassis
NO
NO
NO
NO
Signal Address Function
V-BUS 5 V from PC
DM
DP
Common on the
GND
chassis
1 2 1
6 3 4
5.3.4.2. WLAN (HDMI).
Port for the connection of the optional WLAN Dongle mentioned
in section .
5.3.4.3. EBM.
Port for auto-detection of the installed battery module.
5.3.4.4. RJ45 (Nimbus Cloud).
Ethernet port for Nimbus Cloud connection.
5.3.4.5. Terminals for RPO (Remote Power Off),
Dry In and Dry out.
See to .
Remote Power Off (RPO)
The UPS have two terminals for the installation of an external
Remote Power Off -RPO- button.
By default, the unit is issued from the factory with the closed
RPO circuit type -NC-. The UPS will cut the output power supply,
emergency stop, by opening the circuit:
Either by removing the female connector of the socket where
•
it is inserted. This connector has a cable connected as a bridge
that closes the circuit.
Or by activating the unit's external button, which belongs to
•
the user and is installed between the connector terminals.
The connection on the button must be in the normally
closed (NC) contact, so the circuit will open when it is activated.
Via the communication software and the control panel, it is
possible to select the reverse functionality.
Except for specific cases, we advise against this type of connection
given the role of the RPO button, as it will not act in the event of an
emergency request if either of the cables that go from the button
to the UPS is cut accidentally.
On the other hand, this anomaly would be detected immediately
in the closed RPO circuit, with the drawback of an unexpected
power cut to the loads, but with the guarantee of effective
emergency functionality.
To recover the normal operating status of the UPS, it is necessary
to insert the connector with the bridge into its receptacle or
deactivate the RPO button. The unit will be operational.
A
Fig. 24. Connector for external RPO.
When the RPO is activated, the UPS cuts off the output immedi-
ately and issues the alarm.
SLC TWIN RT3 0.7÷3 kVA UNINTERRUPTIBLE POWER SUPPLY (UPS)
B
55