35
Operating mode / state
Bypass mode
Description.
When the input voltage is within the predefined range of the device and the bypass is enabled, when the UPS is switched off, the
device enters bypass mode. The audible alarm modulated every two minutes is activated.
Battery test
Description
With the UPS in AC mode or CF mode, press the ‘TEST
’
button for more than 0.5 seconds. The audible alarm will beep and the battery
test will start. In the electric flow diagram of the display, the line between I / P and the inverter icon flashes for information purposes.
This test is useful to check the battery state.
Error or fault
state
Description
When an error or fault is detected in the UPS, the inverter will lock. The fault code will be displayed on the screen and the
icon
will illuminate. Table 13 shows the error or fault codes and the correlation with the description.
Tab. 11.
Operating modes.
7.6. WARNING OR ALERT CODES.
Code
Warning or alert description
01
Battery disconnected.
07
Overcharge in the battery.
08
Battery low.
09
Output overload.
0A
Fan fault.
0B
EPO activated.
0D
Overtemperature.
0E
Charger fault.
10
L1 input fuse open.
21
The line voltages of devices connected in parallel are different
22
The bypass voltages of devices connected in parallel are
different
33
Device locked in bypass after 3 successive overloads in 30
minutes
3A
Maintenance switch cover open.
3D
Bypass not available.
3E
Startup fault.
41
Bypass not available.
42
Overtemperature in UPS output power transformer. Applicable to
models with transformer with two secondaries 110/220 Vac.
Code
Warning or alert description
44
Loss of redundancy due to shutdown of one of the UPSs
belonging to the N+X parallel system.
45
Loss of redundancy due to overload in N+X parallel system.
46
Battery test not passed
Tab. 12.
Warning or alert code.
SLC TWIN PRO2 T
UL
UNINTERRUPTIBLE POWER SUPPLIES (UPS)
USER MANUAL