Gamatronic CENTRIC 50 kW User Manual page 96

L A
INE LARM MESSAGE
# UPS
OR STATE OF
Battery is discharged to
shutdown limit.
19. High load level.
20. Load is now running on
battery.
21. Load is now running on
bypass.
22. Low battery voltage.
23. More than one module is
sending an alarm or warning
24. No ac output to load.
25. No output current at one or
more modules due to fault.
26. Outputs of all UPS modules
are disconnected, dc voltage
is normal.
27. Overload current.
28.
Short sync fault
E
R
R Verify that the ac input circuit breaker is "ON". Wait for mains power to return.
If auto-restart is enabled ("Setup > System > Shutdown and Autorestart") the Centric will start up automatically when the power returns. In
any case, battery charging begins automatically upon return of the ac input power.
E The UPS is at 90% load level.
R Be prepared to disconnect nonessential loads if the load level continues to increase.
E The UPS is in battery mode.
R Verify ac input CB is on; check input voltage value; wait for mains power to return.
E The UPS is operating in bypass mode.
R
Perform the instructions in section 10.3 "Troubleshooting "Bypass mode".
E The battery voltage is low. UPS shutdown due to battery discharge is imminent.
R Shut down the critical load(s).
E Self explanatory.
R
Perform the instructions in section 10.4 "Troubleshooting "UPS modules".
E The UPS is not providing any output power.
R
Perform the instructions in section 10.5 "Troubleshooting "No output".
E One or more modules have no ac output.
R To determine the problematic module(s), "Status > Modules". In the diagram, tap the bottom module in the module stack, then select
"Output" in the grid at the bottom of the screen. Tap each module in turn from bottom to top and look at the output data to determine which
module(s) is producing no output. Replace the bad modules.
E Possible master-slave problem at PC819 board.
R Replace PC819 in STSW slot.
E The load devices are demanding more power than the UPS can supply.
R The UPS can tolerate an overload for a short period of time, after which the load is automatically transferred to bypass. When the overload
is eliminated the load is automatically returned to the inverter. If overloading is a persistent problem, the load on the UPS needs to be
reduced. Alternatively, consider adding UPS modules to the system to increase its output power.
E
A short-lived synchronization fault occurred between the inverter and bypass. The fault is logged to the log file.
R
This is the result of a brief variation in the bypass frequency. It is usually of no concern.
88
G E I
AMATRONIC LECTRONIC NDUSTRIES
E
XPLANATION
R
ECOMMENDED ACTION
L .
TD
,
IF ANY
D
EFAULT
S EVERITY
Warning
Critical
Critical
Critical
Critical
Critical
Critical
- - -
Critical
Warning
CENTRIC User Guide, rel. 3.4