Vertiv Liebert EXL 31, Installer/User Manual

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2 INSTALLATION
CAUTION: Risk of improper electrical connections. Can cause equipment damage. The Liebert® Load Bus
Sync Controller must be supplied from L1 and L3.
2.1 Location Considerations
Observe the following guidelines when installing the Liebert Load Bus Sync Controller:
• When installed inside a distribution panel or UPS, ensure that the metal box is secured so that it cannot fall or
touch metal parts containing hazardous voltages.
• Do not install behind the second access panel or in front of the UPS air inlet vents.
• The connections to the slave units must be as short as possible.
• Install a 2-A slow-blow fuse on the phase signal line, as close as possible to the master unit.
2.2 Connecting the Controller to the UPS System
Referring to Figure 1.1 on page 4, for the connection locations:
1. Using a female IEC 10 A plug and a suitable power cable, connect the PE, master-Phase A and Phase C to the
reference signal input on the rear of the Liebert Load Bus Sync Controller.
2. Using an RJ-45 cable, connect the slave UPS X20 connection (on the UPS customer connectivity panel) to UPS
1 port on the front of the Liebert Load Bus Sync Controller.
3. Once the connections are complete, contact Vertiv™ for the final setup and calibration. The setup and
calibration must be performed by an authorized Vertiv™ technician.
2 Installation
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