Rpo (Remote Power Off), Dry In And Dry - Salicru Slc Twin Rt Benutzerhandbuch

5.3.4. Connecting the communication ports
5.3.4.1. RS232 and USB.
The COM communications line is a very low voltage
safety circuit. To preserve the quality, it must be installed
separately from other lines carrying dangerous voltages (power
distribution line).
The RS232 and USB interfaces are useful for monitoring soft-
ware; the RS232 will only be used for firmware updates.
It is not possible to use both the RS-232 and USB ports at the
same time.
The DB9 connector supplies the RS232 signals and the normally
open (NO) potential-free contacts using relays.
The maximum voltage and current applicable to these contacts
is 30V DC and 1A.
The RS-232 port consists of the transmission of serial data
in such a way that a large amount of information can be sent
through a communication cable with only 3 wires.
The USB port is compatible with the USB 1.1 protocol for com-
munication software.
Pin
1
2
3
4
5
6
7
8
9
Table 5. Pinout of DB9 connector, RS-232.
Pin
1
2
3
4
Table 6. Pinout of the USB connector.
5
9
Fig. 20. DB9 connectors for RS-232 and USB.
USER MANUAL
Signal Description Function
NA
UPS: transmits to an
RS232 TX Output
external device
UPS: receives power
RS232 RX Input
from an external device
NA
Standard on the
GND
chassis
NA
NA
NA
NA
Signal Address Function
V-BUS 5V from the PC
DM
DP
Standard on the
GND
chassis
1 2 1
6 3 4
5.3.4.2. WLAN (HDMI).
Port for connecting the optional WLAN dongle mentioned in
section 4.6.3.
5.3.4.3. EBM RJ45 port.
Auto-detection port for installed battery module.
5.3.4.4. RJ45 Ethernet port (Nimbus Cloud).
Ethernet port for Nimbus Cloud connection.

5.3.4.5. RPO (Remote Power Off), Dry In and Dry

Out terminals.
See Fig. 2 to Fig. 4.
Remote shutdown (RPO).
The UPSs have two terminals for installing an external button
for remote shutdown of the output (RPO).
The device is dispatched from the factory with its RPO circuit
NC
set to closed by default. The UPS will cut the output power
supply, emergency power off, when the circuit is opened:
Either by removing the female connector from the socket
•
where it is inserted. This connector has a cable connected
as a jumper that closes the circuit (see Fig. 21-A).
Or by pressing the button external to the device belonging
•
to the user installed between the terminals of the con-
nector (see Fig. 21-B). The connection on the button must
be in the normally closed contact NC, so it will open the
circuit when activated.
The reverse functionality can be selected through the communi-
cations software and control panel -NA-.
Except for specific cases, we advise against this type of con-
nection in view of the purpose of the RPO button, since it will
not act upon an emergency request if either of the two cables
that run from the button to the UPS is accidentally cut.
By contrast, this anomaly would immediately be detected in a
closed RPO circuit -NC-, with the inconvenience of an unex-
pected cut in the powering of the loads, but a guarantee of
effective emergency functionality.
To recover the normal operating state of the UPS, it is neces-
sary to insert the connector with the jumper in its receptacle
or deactivate the RPO button. The device will be operational.
A
Fig. 21. Connector for external RPO.
When the RPO is activated, the UPS immediately cuts off the
output and sounds the alarm.
RPO
Connector type
External magneto 60 V DC / 30 V AC 20 mA max.
Table 7. RPO wiring and protection specifications.
SLC TWIN RT3 LION UNINTERRUPTIBLE POWER SUPPLIES (UPS)
B
Comments
Maximum 16 AWG cables
55