OPTI-UPS MD120L - Manual (Page 76)

Chapter 1 Installation
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1.7.9 LBS (Load Bus Synchronizer) Port
The dual bus system (DBS) consists of two independent UPS rack module systems, as shown in fig
1-20. The dual bus system is configured for high availability and is suitable for powering the load with
dual inputs. If the load is single-input load, the static transfer switch and LBS control is recommended to
maintain both UPS outputs synchronized for uninterrupted transfers. Please install the system according
to the installation descriptions for different system configurations.
The dual bus system is supported by UPS, it requires connecting the LBS signal cables of two UPS
when constructing the dual bus system; please refer to relevant chapter for detailed configuration and
installation, and the system software shall be configured as required.
UPS 1
LBS
监控旁路模块 UPS 2
LBS
监控旁路模块
Fig 1-20 LBS Connection Diagram
1.8 Installation Drawing
Please refer to fig 1-21, fig 1-22, fig 1-23 and fig 1-24:
Fig 1-21 Installation Diagram
UPS 1 monitoring
bypass module
UPS 2 monitoring
bypass module