Vertiv™ NetSure™ 2100 Series -48 VDC Power System User Manual
Proprietary and Confidential © 2022 Vertiv Group Corp.
5
5
Troubleshooting and Repair
5.1
Contact Information
Refer to Section 4154 (provided with your customer documentation) for support contact information.
5.2
Controller and Rectifier
For troubleshooting and repair instructions on these units, refer to the following documents.
•
Mini Control Unit Instructions: UM1M831ANA
•
Rectifier Instructions: UM1R481000e3
5.3
Controller Configuration
If any controller configuration settings were changed, refer to the mini control unit instructions (UM1M831ANA) and save a copy of
the configuration file. This file can be used to restore the controller settings, if required, at a later date.
NOTE!
Provided on a USB drive furnished with the system is a controller configuration drawing (C-drawing) and the
controller configuration files loaded into the controller as shipped.
5.4
System Troubleshooting Information
5.4.1
Contact Information
Refer to Section 4154 (provided with your customer documentation) for support contact information.
5.4.2
General
This system is designed for ease in troubleshooting and repair. The various indicators as described in the controller and rectifier
instructions are designed to isolate failure to a specific element. Once the faulty element has been identified, refer to “Replacement
Information” on page 6 and “Replacement Procedures” on page 6.
5.4.3
Troubleshooting Alarm Conditions on the Controller
The controller displays alarm conditions as listed in the “Resolving Alarms” section of the controller’s user manual. Programmable
external alarm relays are also available. Refer to the system installation instructions (IM582138000) and the controller configuration
drawing (C-drawing) supplied with your power system documentation for your alarm relay configurations.
The controller’s Active Alarm and Alarm History submenus allow the user to view alarm details. Refer to the mini control unit
instructions (UM1M831ANA) to access these menus.
5.4.4
Checking the Controller’s Current Limit Point after Adding or Removing a Rectifier
If a rectifier module is added; the respective current limit point in amps will automatically increase to maintain the same percentage.
For example, if the current limit was set to 100% of combined capacity and a rectifier module is added, the new current limit setpoint
will be 100% of the combined capacity including the new rectifier module.
If a rectifier module is removed from the system (and the Rect Comm Fail is cleared), the current limit point will remain unchanged
unless the capacity of the remaining rectifiers is not sufficient to maintain this current limit point. If that happens, the current limit
point will automatically decrease to the maximum (121% of the remaining rectifiers).
It is recommended that the current limit point be checked whenever a rectifier is added to or removed from the power system.
When setting total rectifier current limit, the set point to each rectifier is the total set point divided by the number of rectifiers. For
example, if the system contains three rectifiers and the current limit is set to 30 amps then each rectifier has a current limit set point
