American Power Conversion MX28B1200, MX28B2400+27V manual External Alarm Inputs, Alarm Outputs

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MX28B-1200+27V PRODUCT MANUAL

5.7.1External Alarm Inputs

Four external alarm inputs with assignable priority levels are availa ble. These alarm inputs respond to external dry contact closures between normally open (NO) and common (C) or contact openings between normally closed (NC) and C (see Table 5-1).

External Alarm Source

Connect To Input

(non-alarm state)

Alarm Terminals

 

 

OPEN

NO-C

CLOSED

NC-C

 

 

Table 5-1. External Alarm Input Definition

Table 5-2 shows the external alarm input connection designations. Connector J4 is located on the alarm interface board mounted in the space above the control unit. Systems are shipped with jumper wires connecting each NC and corresponding C contact. A jumper wire should be removed only if the corresponding NC-C contacts are going to be used.

EXTERNAL

J4 TERMINAL

 

ALARM

DESIGNATION

USER ALARM NOTES

INPUT

(NO-NC-C)

 

 

 

 

#1

NO1-NC1-C1

___________________________

#2

NO2-NC2-C2

___________________________

#3

NO3-NC3-C3

___________________________

#4

NO4-NC4-C4

___________________________

 

 

 

Table 5-2. External Alarm Input Connections

5.7.2Alarm Outputs

There are eight alarms available that provide outputs via Form “C” relay contacts. The last two of these are pre-assigned as the Minor and Major alarm outputs. The Major relay is energized (NO-C contacts closed) during normal (non-alarm) operating conditions ; all the other relays energize when an alarm condition occurs. The other six outputs are initially designated as “Relay 1” through “Relay 6” (the user may assign more meaningful names if desired). The various system alarm conditions can be assigned to any of the eight alarm outputs.

Table 5-3 shows the alarm output connection designations. Connectors J1 and J2 are located on the alarm interface board mounted in the space above the control unit. The relay contacts should only be used to switch resistive loads of 0.5 amperes or less at 60 volts or less.

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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 DamageWarranty Repair or Replacement Warranty ReturnsGeneral Provisions Exclusions and Limitations MX28B-1200/2400+27V DescriptionMX28B1200/2400+27V System Diagram Rectifiers Power Output CapacityConverters Control Unit AC Input Power+24V DC Distribution Battery connectionsDC Distribution 48 V DC Distribution from Converters OptionalMechanical EnvironmentalCompliance 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 OperationAlarm Output Relays External Alarm InputsSnmp Interface Parameter Locations, Descriptions, and Default Values Status AlarmsSystem SET-ALM Date Setup PINOUT-RLY RLY-MAP AliasModules Rect SET-ALM DiagParam InfoFuse SET-ALM Cirbkr SET-ALMBatt SET-ALM Alias Fuse LVD SET-ALMComp 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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