American Power Conversion MX28B1200 Apply AC Power, System Parameters Verification/Adjustment

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MX28B-1200+27V PRODUCT MANUAL

5.10.1 Apply AC Power

Turn on the circuit breakers that supply AC power to the rectifier shelves in the MX28B DC power plant. Turn on the individual 20 Amp circuit breakers for each rectifier on the shelf. The main screen should appear on the control unit display (see Figure 5-10). The display on the control unit is a 2-line by 16-characters display. The cursor cycles below the characters of the active selection on the display. Information shown in the second line of Figure 5-10 that extends beyond 16 characters (to the right of the “S” in “ALARMS”) can viewed on the control unit display by using the scrolling controls (refer to Section 6 for operation of the control unit).

NOTE: When AC power is initially applied, there is a 60-second period during which no alarms are reported.

MX28B1200 24V +

STATUS ALARMS SYSTEM MODULES BATT PIN OEM

Figure 5-11 Control Unit Display

5.10.2 System Parameters Verification/Adjustment

The MX28B system control unit is delivered with pre-programmed parameter default settings. A complete listing and description of all system configuration parameters as well as displayable system status and information is provided in Section 6. Read Section 6 to gain an understanding of and how to use the operational features provided by the MX28B DC power plant. As a minimum, the following parameters should be verified and adjusted, if required, before connecting batteries or loads to the power plant:

1)Battery Float Voltage - default = +27.00V DC (Check the manufacturer’s recommendation for the batteries being used in the system.)

2)Battery Maximum Recharge Rate - default = 200A. (Bellcore specifications recommend a maximum charging rate of battery capacity (in Ampere-hours) divided by 20 hours; check the manufacturer’s recommendation.)

3)System Voltage - measurement ≅ +27.00V DC (This is a measurement by the system of the DC output bus voltage.)

4)LVD Option - default = “Enable” (If the MX28B does not have an LVD installed, this should be changed to “Disable”.)

5)Rectifier Information - Check the rectifier information displays to verify that all rectifiers installed can be viewed on the control unit display and that no rectifier alarms are active.

Section 6 provides location information for these parameters and how to make changes if required.

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Contents Model MX28B1200/2400+27V Description Part Number Battery Temperature ProbeDC Distribution Options +24V LVD Options +24VInitial release Revision Date Description 09/12/2001Table of Contents SETUP, ADJUSTMENTS, and Operation Page Introduction PrecautionsInspection upon Receipt of Goods GeneralReturn of Damaged Goods Concealed DamageGeneral Provisions Warranty ReturnsWarranty Repair or Replacement Exclusions and Limitations MX28B-1200/2400+27V DescriptionMX28B1200/2400+27V System Diagram Converters Power Output CapacityRectifiers Control Unit AC Input Power+24V DC Distribution Battery connectionsDC Distribution 48 V DC Distribution from Converters OptionalCompliance EnvironmentalMechanical Preparation Safety PrecautionsRecommended Tools Recommended Test EquipmentMounting Room/LocationsVentilation AC Service and Ground ConnectionsBattery Disconnect Cable Sizing Considerations Connecting the CablesConverter Installation Rectifier InstallationAlarm Interface PC Board Alarm ConnectionsAlarm Outputs External Alarm InputsDC Circuit Breakers Connecting The Loads2.2 -48V Circuit Breaker Load Connections Installation of Circuit BreakersPower-Up and Checkout Battery Temperature Probe InstallationSystem Parameters Verification/Adjustment Apply AC PowerFull System Power Up User Interface SETUP, ADJUSTMENTS, and OperationSnmp Interface External Alarm InputsAlarm Output Relays Parameter Locations, Descriptions, and Default Values System SET-ALM AlarmsStatus Date Setup PINOUT-RLY RLY-MAP AliasModules Rect SET-ALM DiagParam InfoFuse SET-ALM Cirbkr SET-ALMComp Alias Fuse LVD SET-ALMBatt SET-ALM PIN OEM Rev MX28B-1200+27V Product ManualParameter Description Display Screens Default Settings Conv LV Alm 40.0 C OFFBatt Disc Alm m+ Conv Fail Safem+ Cir Bkr 1 Alm m+ Out-Rly LVD2 LVD1

MX28B2400+27V, MX28B1200 specifications

The American Power Conversion (APC) MX28B1200 and MX28B2400+27V are advanced power management solutions designed to deliver superior reliability and performance for critical applications. These models are an integral part of APC’s extensive range of uninterruptible power supplies (UPS), catering specifically to high-performance environments such as data centers, server rooms, and industrial systems.

One of the standout features of the MX28 models is their robust power output capability. The MX28B1200 offers a 1200VA power rating, while the MX28B2400+27V boasts a substantial 2400VA rating. This impressive output ensures that connected equipment remains operational during power outages, providing essential backup support and minimizing downtime.

Another key characteristic is their advanced battery management technology, which incorporates intelligent charging systems to extend battery life and improve overall efficiency. This technology helps optimize the charging process, ensuring that the batteries are always in top condition and ready to supply power when needed.

The MX28B series also integrates smart LCD displays that provide real-time information on power conditions, battery status, and system performance. This user-friendly interface allows administrators to monitor the UPS at a glance, facilitating easier management and quicker response times in case of any issues.

In addition to reliable power delivery, the MX28 models emphasize scalability and flexibility. They are designed to support a variety of configurations and are compatible with a range of external battery packs. This ability to adapt means businesses can expand their power capabilities without overhauling their existing systems.

Furthermore, the MX28B series includes advanced protection features against power surges, voltage fluctuations, and other electrical disturbances. This ensures the safety of connected devices, safeguarding against potential damages and enhancing the overall integrity of critical operations.

The design of the APC MX28 models prioritizes efficiency, compliance with global energy standards, and reduced operational costs. This focus on efficiency not only leads to savings but also aligns with sustainable practices, making them an ideal choice for environmentally conscious organizations.

Overall, the APC MX28B1200 and MX28B2400+27V represent a significant advancement in UPS technology, combining power reliability, intelligent management, and environmentally friendly design to support a wide array of demanding applications across various industries.
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