System information
GRAVITAS SABRE SERIES
INSTALLATION &OPERATING MANUAL
Manual No. SABRE-4 Page 51 11/27/07 sabre-man
5.2.2 Hot Swap Operation
5.2.2.1 Inverter module
A. Locate the lock switch at the unlock position.
B. Install or remove the Inverter module from the shelf.
5.2.2.2 STS module
A. WA RN IN G : Ensure that the Maintenance Bypass Switch is set to the MBP or the IBP position (as determined by
mains and inverter output status position) otherwise it will damage the STS module frame due to the mechanical
interlock. . Refer to Figure 28.
B. Set the lock button at the unlock position.
C. Install or remove the STS module from the shelf.
5.2.2.3 Controller module
A. Loosen the retaining screw.
B. Install or remove the Controller module from the shelf.
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If you encounter a problem in the operation of the Inverter system and need UNIPOWER Telecom to service your
equipment it is recommended to leave the system in its current state and record any system message on the Controller
LCD display along with the conditions of the LED indicators on the individual module front panels; then contact
UNIPOWER Telecom for assistance.
Leaving the unit in its current state will facilitate the engineers in troubleshooting more easily.
For an immediate remedy you may wish to consider the following troubleshooting tips.
If the system fails to operate properly, use the troubleshooting table to determine the probable cause and obtain
suggestions on how to proceed.
It is not possible to anticipate all symptoms in the guide, but those listed are the most likely.
Symptom Possible Cause Recommended procedure
Inverter modules are in the cabinet,
DC power is applied, but one or more
modules do not operate.
The module(s) may not be fully
inserted into the shelf.
Install the module once more.
System is working, But you can not
enter module status menu.
The communication cable between the
controller and inverter and STS
module is not properly connected.
Check if the communication cable is
properly connected.
System is working, but yellow LED is
on.
Overload. Check the system load and reduce if
necessary.
The fans of a module have stopped
working and red LED on the module
is blinking.
Fan fault. Replace the fans.
System has stopped working, yellow
and red LED are on.
Overload fault. Check the system load and reduce if
necessary, then restart the system.