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Summary of Contents for Vertiv Liebert Load Bus Sync Controller
- Page 1 Liebert® Load Bus Sync™ Controller for Liebert® NX™ 225-600kVA UPS User Manual...
- Page 2 The products covered by this instruction manual are manufactured and/or sold by Vertiv This document is the property of Vertiv and contains confidential and proprietary information owned by Vertiv. Any copying, use or disclosure of it without the written permission of Vertiv is strictly prohibited.
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Page 3: Table Of Contents
Installation Kit - 10B14515G1 components ......... . . 10 ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™... - Page 4 ™ ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual |...
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Page 5: Important Safety Instructions
This unit is not designed for use in a residential area. Operation of this unit in a residential area may cause harmful interference that the user must correct at his own expense. ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual |... -
Page 6: Introduction
Controller is available as an option with the Liebert® NX 225-600V, ® ™ ™ either as a factory-installed option or as a kit that is installed and configured by Vertiv -trained ™ and certified personnel. Examples of configurations where the Liebert... -
Page 7: Mechanical Characteristics
Controller has these dimensions: ® ™ • Length = 7.1" (181mm) • Width = 3.7" (94mm) • Height = 2.5" (64mm) Figure 1 Rear panel reference supply input ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™... -
Page 8: Figure 2 Front Panel Ups Sync. Outputs
Figure 2 Front panel UPS sync. outputs ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™... -
Page 9: Typical Configurations
Otherwise, the UPS will be in phase with its own bypass line and will follow external synchronization only when this is out of tolerance. ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual |... -
Page 10: Two Ups Units With Common Bypass Line
Controller can be used to provide phase reference to the Liebert ® ™ ® UPS in installations with alternative power sources, such as diesel generators, see Figure 5. ™ ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™... -
Page 11: Figure 5 Liebert® Nx™ Systems And Electrical Generating Devices
N.B. fuses should be installed in the phase signal line, upstream of the Liebert Load Bus Sync ® ™ Controller, to protect against the damage caused by short circuits. ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™... -
Page 12: Liebert® Nx™ And Third-Party Brand Ups In The Same Installation
If UPS #1 and UPS #2 are not set to follow the external synchronization signal, the UPS will be in phase with its own bypass line and will follow external synchronization only when the bypass line is out of tolerance. ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™... -
Page 13: Figure 7 Installation Example
Floor X Supply Long connection between Master source and ® ™ Liebert Load Bus Sync Floor 2 Controller Supply Floor 1 Supply Fuse Third-Party (not by ™ Vertiv ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™... -
Page 14: Installation
Set “Function selection” back to “Return”: PNU 52=0. 6. Set “Access level” back to “Normal operation:” PNU 51=1. Once back in normal operation, open QS1 and the electronics will shut down. ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™... - Page 15 6. Set PNU 51 “Access level” back to “Normal operation(1).” Click on “Send all set values” push button.” 8. Once back in normal operation open QS1 and the electronics will shut down. ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™...
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Page 16: Offset Compensation Tuning
Verify on the oscilloscope the phase error between inverter and bypass. The following figures show an example of NO SYNC (Figure 9) and SYNC (Figure 10). Figure 9 Synchro Error 88,56 [°] ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™... -
Page 17: Figure 10 Synchro Error 0 [°]
Set “Access level” back to “Normal operation”: PNU 51=1. 10. Start the inverter and open QS2 again, check that the SYNC is now according to example in Figure 10. 11. Close QS2 again. ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™... -
Page 18: Procedure Complete For Ups1
3.3.3 Procedure complete for UPS1 NOTE ® This offset compensation procedure must be followed for ALL the units connected to Liebert ™ Load Bus Sync Controller. ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™... -
Page 19: Installation Example
Floor 1 Supply Fuse Third-Party (not by ™ Vertiv Note the position of the Liebert Load Bus Sync Controller. This unit’s location should be ® ™ selected so that the connections to the slave units are as short as possible. Install a 2A slow-blow fuse on the phase signal line, as close as possible to the master unit. - Page 20 NOTES ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™...
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- Page 22 ® ™ Vertiv | Liebert Load Bus Sync Controller Installation Manual | ™...
- Page 24 © 2018 Vertiv Co. All rights reserved. Vertiv and the Vertiv logo are trademarks or registered trademarks of Vertiv Co. All other names and logos referred to are trade names, trademarks or registered trademarks of their respective owners. While every precaution has been taken to ensure accuracy and completeness herein, Vertiv Co.
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