Parallel System Commissioning; Load Bus Sychronization (Lbs) Installation; Lcd Setting - Tripp-Lite SmartOnline S3M Serie Manuel Du Propriétaire

3. Installation and Wiring

3.13.3 Parallel System Commissioning

Parallel systems should be commissioned only after setup is complete for the individual systems.
The example below is for commissioning four units in parallel.
1. Confirm the input/output wire connections and input phase sequence are correct. Switch off the battery breaker and
measure to ensure the +/- bat voltages of all battery groups are normal.
2. Connect the parallel cable. It should be a formed loop connection.
3. Switch on the input breaker of unit 1 and access the LCD setting interface to set the parallel working mode, ID, parallel
number and redundant number (refer to section 4.3.6.2.2). Set required setting for series number and battery capacity.
The output voltage level and bypass protection range are default setting.
4. Turn off the input breaker of unit 1 and make sure the UPS is off. Turn on the input breaker of unit 2. Access the LCD
setting interface to set the parallel working mode, ID, parallel number and redundant number. The other settings are the
same as UPS 1 operation.
5. For unit 3 and unit 4, the operation settings are all the same as units 1 and 2.
6. Turn on Bypass/Input/Output breakers on all the paralleled UPS, then confirm all the settings are correct. Each UPS has a
different ID.
7. Turn on all the battery breakers and confirm the parameters (V/I) are normal.
8. Connect the load, and check to ensure the output currents are balanced.
9. Switch the utility breaker on and off to test that all the UPS units' converter systems go from utility power to battery power
and restored functions are working.
3.14 Load Bus Synchronization (LBS) Installation
The function of LBS is to keep the output of two independent UPS systems (single unit or multiple units) in synchronization
even when the two systems are operating on different modes (bypass/inverter) or on batteries. It is usually used with a Static
Transfer Switch (STS) connected to the critical load to achieve Dual Bus configuration.
LBS can be divided into trace and switch in functions. The trace function takes charge of the synchronization of the two
systems, while the switch oversees the power supply switch between the two systems. When one system shuts down or output
is abnormal, the STS will switch to the supply of the other system to guarantee power supply maintenance to load.
In common, the switch function is independent from the UPS system. The trace logic is emphasized. The two independent UPS
systems are different in trace logic. One system is the Master and the other is the Slave. The logic is defined below.
Hardware: Connect the LBS cable into RJ45 interfaces of the two end UPS systems in each group. The full system is shown
below.

3.14.1 LCD Setting

Set every UPS of the system to be LBS Master or LBS Slave. For instance if the UPS belongs to the LBS Master system, its
LBS setting must be set to Master.
• If both the two systems supply to the inverter side, the Slave will trace the Master;
• If the Master supplies through bypass and the Slave supplies to the inverter side, the Slave will trace the Master;
• If Master supplies to the inverter side and the Slave supplies through bypass, the Master will trace the Slave;
• If both of the systems supply through bypass, there is no trace between the two systems.
Note: The trace source must be in trace range, otherwise, there will be no trace. If the inverter does not output to the UPS, it can't be
affected by the LBS signal.
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