NetSure™ -48 VDC Power System
Contents
1. Emerson Network Power Energy Systems North America Inc 2015 While every precaution has been taken to ensure accuracy and completeness herein Emerson Electric Co assumes no responsibility Business Critical Continui ty Emerson Network Power the Emerson Network Power logo Emerson and Consider it Solved are service marks and and disclaims all liability for damages resulting from use of this trademarks of Emerson Electric Co EnergyMaster eSure NetPerform NetReach NetSpan NetSure and NetXtend are trademarks of Emerson information or for any errors or omissions Specifications subject to Network Power Energy Systems North America Inc Any other product brand or company names or logos are the property of the respective owner change without notice EMERSON CONSIDER IT SOLVED Spec No 582136600 Section 6032 Model No 211NGFB Issue M January 12 20152. maximum expected load If batteries are used on the rectifier output the batteries should support the load until the current limit set points can be re established due to loss of a rectifier Section 6032 Issue M January 12 2015 NetSure 48 VDC Power System l EMERSON User Instructions Section 6032 Issue M January 12 2015 Network Power Refer to the ACU Instructions UM1M820BNA or NCU Replacement Procedures Instructions UM1M830BNA for a procedure Important Safety Instructions Clearing a Rectifier Communications Fail Alarm after Removing a Rectifier DANGER Adhere to the Important Safety Instructions presented at the front of this document If a rectifier module is removed from the system a rectifier communications failure alarm is generated If the rectifier module will not be replaced the alarm should be cleared Replacing a Rectifier Module Refer to the controller instructions for a procedure Refer to the separate Rectifier Module User Manual for a rectifier replacement procedure Before replacing any Rectifier Modules note the following Clearing a Rectifier Lost Alarm If the controller resets while a rectifier communications fail alarm is active the rectifier communications fail alarm is replaced with a In a Power System equipped with an NCU or ACU controller the rectifier lost alarm The alarm should be cleared rectifier module being replaced is assigned by the controller the lowest a
3. present on the Distribution Unit 2 Performing this procedure may activate external alarms Do one of the following If possible disable these alarms If these alarms cannot be easily disabled notify the appropriate personnel to disregard any future alarms associated with this system Loosen the captive fastener located on the front of the Distribution Unit Partially slide the Distribution Unit out of the Power Distribution Shelf Replace the open GMT fuse Ensure a safety cover is installed over the new fuse Carefully slide the Distribution Unit back into the Power Distribution Shelf Secure the Distribution Unit by tightening the front captive fastener Enable the external alarms or notify appropriate personnel that this procedure is finished eT Se SS E Ensure that there are no local or remote alarms active on the system Figure 2 GMT Distribution Fuse Replacement List 1 and 2 List 1 shown GMT Fuses and Safety Covers Spec No 582136600 5 Section 6032 Model No 211NGFB Issue M January 12 2015 NetSure 48 VDC Power System User Instructions Section 6032 Issue M January 12 2015 giant Replacing a GMT Distribution Fuse List 5 and 6 Shelves If a GMT distribution fuse opens replace with the same type and rating or equivalent Refer to SAG582136600 for fuse replacement part numbers Refer to Figure 3 as this procedure is performed Procedure 1 Adhere to the Important Safety Instructions
4. presented at the front of this document This procedure exposes the Distribution Unit BATTERY VOLTAGE is present on the Distribution Unit 2 Performing this procedure may activate external alarms Do one of the following If possible disable these alarms If these alarms cannot be easily disabled notify the appropriate personnel to disregard any future alarms associated with this system Open the Distribution s Unit front access panel Replace the open GMT fuse Ensure a safety cover is installed over the new fuse Close the Distribution s Unit front access panel Enable the external alarms or notify appropriate personnel that this procedure is finished SO pP aS Ensure that there are no local or remote alarms active on the system Figure 3 GMT Distribution Fuse Replacement List 5 and 6 List 5 shown LA Fo XAM f i GMT Fuses and Safety Covers GMT Fuses GMT Fuses and Safety Covers and Safety Covers Max 15A Max 10A Spec No 582136600 6 Section 6032 Model No 211NGFB Issue M January 12 2015 K NetSure 48 VDC Power System S EMERSON User Instructions Section 6032 Issue M January 12 2015 Network Power Replacing a GMT Distribution Fuse List KG GMT Fuse Load Distribution Unit Replacement Distribution Panel If the Distribution Unit should need to be replaced replace the Load distribution fuses are located on the front panel of List KG If complete Power Distribution Shelf
5. replacement of a distribution fuse becomes necessary replace only with Bussmann GMT type of the correct rating Ensure a safety cover is installed on the replacement fuse as shown in Figure 4 Figure4 Safety Fuse Cover Part No 102774 Bussmann GMT Y je Spec No 582136600 7 Section 6032 Model No 211NGFB Issue M January 12 2015 NetSure 48 VDC Power System User Instructions Section 6032 Issue M January 12 2015 geek tied This page is intentionally blank Spec No 582136600 g Section 6032 Model No 211NGFB Issue M January 12 2015 NetSure 48 VDC Power System User Instructions Section 6032 Issue M January 12 2015 gi e T NetPerform Optimization Services At Emerson Network Power we understand the importance of reliable equipment it s critical to both your business and your bottom line That is why we offer a wide array of services to meet all of your network infrastructure needs Customer Service Pre Shipment Email CustomerService ESNA Emerson com Pricing and availability l l purchase orders expediting requests and order tracking Ask for your company s dedicated Customer Service Phone 1 800 800 1280 option 1 Associate Customer Support Center Post Shipment Email ESNACustomerSupportCenter Emerson com After an order has shipped contact our Customer Support Center Phone 1 956 661 6867 with related questions concerns or claims Account Management Email AccountManagem
6. 2 e Rectifier Instructions UM1R481000 e Power System System Application Guide SAG582136600 e Engineering Drawings Controller User Manual e NCU Controller User Instructions JM1M830BNA e ACU Controller User Instructions JM1M820BNA e SCU Controller User Instructions JUM1M521BNA For factory settings of all configurable Controller parameters refer to the Configuration Drawing C drawing supplied with your Power System System Description The NetSure 211NcFB DC Power System is a complete integrated power system containing rectifiers intelligent control metering monitoring and distribution This power system consists of the following mounted in a 1RU or 2RU high by 19 or 23 wide shelf 500W or 1000W Rectifier Modules e The 1RU high by 19 wide shelf accommodates two 2 500W or 1000W Rectifier Modules e The 1RU high by 23 wide shelf accommodates three 3 500W or 1000W Rectifier Modules e The 2RU high by 19 wide shelf accommodates four 4 500W or 1000W Rectifier Modules e The 2RU high by 23 wide shelf accommodates six 6 500W or 1000W Rectifier Modules The Rectifier Modules provide load power battery float current and battery recharge current during normal operating conditions The Rectifier Modules are designed to provide constant power Spec No 582136600 1 Model No 211NGFB Ss EMERSON Natwor le P Anwar Network rowel They are designed with the latest patented s
7. NetSure 48 VDC Power System User Instructions Section 6032 Issue M January 12 2015 Specification Number 582136600 Model Number 211NGFB EMERSON Network Power NetSure 48 VDC Power System User Instructions Section 6032 Issue M January 12 2015 geek tied This page is intentionally blank Spec No 582136600 Section 6032 Model No 211NGFB Issue M January 12 2015 NetSure 48 VDC Power System User Instructions Section 6032 Issue M January 12 2015 Eoo Table of Contents Admonishments Used In This Document esesssesossesosssscossecosseceossecosseecossecossecossecossesosssecosssecossecossecossescossecosseeoo ii Important Safety Instructions cscs hcdvces saciccartoscecessasevueatacesececuteevceducensycounsevnedecxorsecuddesavansbnoesvurcncrbueasasteaesmnstueenoewsert iii cene ako l faa E A E E ee iii oI E e E A SEENE A A N EE A E A E N ENS E E A A ee ere iii LORY csceexcqsesees accsenansesacean A AE A E E suctec acne sesau emer E E E iii Handling Equipment Containing Static Sensitive COMPONENLGS sscccccccccccccceeeeeesssseeeeeccccceeeeeessaaaaaassseeeeeeeeees iii Static VV Al MING si cosscancverecescutrscivevencdansabvociveberedisiatenadasieaeaccasea avaiessassaiaa bosses aaa aai iv System OV GR VICW ocscrieiiic e a E aE RE 1 FEC AE NEEE NE EEE A OE EN EE EE N acon E N ANE E T E AE EE 1 Dy SECMIMID CSC DION er e E E E E ote 1 OD SPAUING PrO CEUTE S errer ron cess cpaneuaeteoeetocadeyceosnceu
8. azard the reader may be exposed to that could result in death or serious injury if not avoided This admonition is not used for situations that pose a risk only to equipment software data or service ANSI CAUTION Warns of a potential hazard the reader may be exposed to that could result in minor or moderate injury if not avoided ANSI OSHA This admonition is not used for situations that pose a risk only to equipment data or service even if such use appears to be permitted in some of the applicable standards OSHA ALERT Alerts the reader to an action that must be avoided in order to protect equipment software data or service ISO ALERT Alerts the reader to an action that must be performed in order to prevent equipment damage software corruption data loss or service interruption ISO FIRE SAFETY Informs the reader of fire safety information reminders precautions or policies or of the locations of fire fighting and fire safety equipment ISO Fire Safety SAFETY Informs the reader of general safety information reminders precautions or policies not related to a particular source of hazard or to fire safety ISO ANSI OSHA Spec No 582136600 Section 6032 Model No 211NGFB II Issue M January 12 2015 NetSure 48 VDC Power System S EMERSON User Instructions Section 6032 Issue M January 12 2015 Alatinsarl Dmrarar Network Power Important Safety Instructions Genera
9. ection 6032 Issue M January 12 2015 Network Power The information contained in this document is subject to change without notice and may not be suitable for all applications While every precaution has been taken to ensure the accuracy and completeness of this document Emerson Network Power Energy Systems North America Inc assumes no responsibility and disclaims all liability for damages result ing from use of this information or for any errors or omissions Refer to other local practices or building codes as applicable for the correct methods tools and materials to be used in performing procedures not specifically described in this document The products covered by this instruction manual are manufactured and or sold by Emerson Network Power Energy Systems North America Inc This document is the property of Emerson Network Power Energy Systems North America Inc and contains confidential and proprietary information owned by Emerson Network Power Energy Systems North America Inc Any copying use or disclosure of it without the written permission of Emerson Network Power Energy Systems North America Inc is strictly prohibited Names of companies and products are trademarks or registered trademarks of the respective companies Any questions regarding usage of trademark names should be directed to the original manufacturer EmersonNetworkPower com Energy Systems North America EmersonNetworkPower eu EnergyS ystems EMEA
10. ed to a battery or output terminal NEVER allow a metal object such as a Q ALERT Installation or removal of equipment containing tool to contact more than one termination or battery Pret static sensitive components requires careful handling terminal at a time or to simultaneously contact a Before handling any equipment containing static termination or battery terminal and a grounded object sensitive components read and follow the instructions Even amomentary short circuit can cause sparking contained on the Static Warning Page explosion and injury Spec No 582136600 se Section 6032 Model No 211NGFB HII Issue M January 12 2015 NetSure 48 VDC Power System S User Instructions Section 6032 Issue M January 12 2015 Eo Static Warning Ata ATTENTION The printed circuit cards used in this equipment contain static sensitive components The warnings listed below must be observed to prevent damage to these components Disregarding any of these warnings may result in personal injury or damage to the equipment 1 Strictly adhere to the procedures provided in this document 2 Before touching any static sensitive component or printed circuit card containing such a component discharge all static electricity from yourself by wearing a wrist strap grounded through a one megohm resistor Some wrist straps such as Emerson Network Power Part Number 631810600 have a built in one megohm resistor no external resistor is nec
11. ent ESNA Emerson com Provides quotes and bid responses for custom configured l DC power systems and outside plant enclosures for customers and channel partners Phone 1 800 800 1280 option 2 Reps VARs amp Distributors Spare Parts Email DCpower Spares Emerson com Pricing and purchase orders for spare parts including but not limited to OSP Spares Emerson com breakers cables fuses rectifier fans misc breaker and fuse panels Phone 1 800 800 1280 option 5 enclosure fans doors and switches etc DC Power Depot Repair Email DCpower Repair Emerson com Creates and processes RMAs for depot repair and refurbishment Determines repair and refurbishment lead times and pricing based on warranties contractual agreements Provides repair shipping information Phone 1 800 800 1280 option 6 and status Technical Support DCpower T AC Emerson com OSP TAC Emerson com Answers technical product and system questions determines status of warranties and contractual agreements for repair Email Phone 1 800 800 5260 Email DCpowerReps ESNA Emerson com Provide quotes and bid responses for application specific configured DC Phone 1 440 240 0639 power systems for Liebert DC power sales reps 1 Contact Account Management for custom configurations 21 Contact Spare Parts for parts and accessories Spec No 582136600 9 Section 6032 Model No 211NGFB Issue M January 12 2015 A NetSure 48 VDC Power System Mes on User Instructions S
12. erersusictevesnuedeycdvvaus uss cnoneasaess 2 Controller and IU eos sees ava ite aviv e E A 2 List KG GM T Load Distribution FUSE Panel vzccccsesandeveasvadersareadsvvesinasaseedoodssaesoaraveavnodssasnned eveussedevenaeavevensoaddswaemasaneatoadees 2 IVIAIIT ON AN CO E E E E E A 2 important SALEBY MSto S epn N E A EE A 2 System Maintenance Procedures sssssssssssseeecccccceccecsseeuesssseeeeccccccceeeeessauaussssseeeeeececeeeeeeesaaaaaaasssseeececeeeeeeeeeeaaas 2 TROUDIESHOOGING ANG RED AM sieran EE AN E N ENEE NER 3 Eo ea EIE ELE AA E E N E E A E E A E E 3 Controllerand Recte S cenpasmenreasr nen curiae E E AT AA men TAEA 3 Controller Connora ON a5 ce4 vesenvesacs cepeexecanseo sce asecsavepsee noaciceuved 5eoetsagusessiucssae T T 3 Systeri Troubleshooting Informatio iss 25i lt csuedseauceavhdecenetensdesnsiedesaueisevusieesbd A A a 3 Replacement Information ccccccccccccccccceeesseesssssseeeeccccceeeeeseaaeasssssseseeeeccccceeeeessaaeaassssseeeececeeeeeesesaaaagaassseeeeeeeeees 4 Rosie eyes Ba Uhm Procede asinen Era ee T A E N T R 4 Spec No 582136600 Section 6032 Model No 211NGFB l Issue M January 12 2015 NetSure 48 VDC Power System User Instructions Section 6032 Issue M January 12 2015 e n Admonishments Used In This Document DANGER Warns of a hazard the reader will be exposed to that will likely result in death or serious injury if not avoided ANSI OSHA WARNING Warns of a potential h
13. essary Read and follow wrist strap manufacturer s instructions outlining use of a specific wrist strap 3 Donottouch the traces or components on a printed circuit card containing static sensitive components Handle the printed circuit card only by the edges that do not have connector pads 4 After removing a printed circuit card containing a static sensitive component place the printed circuit card only on conductive or anti static material such as conductive foam conductive plastic or aluminum foil Do not use ordinary Styrofoam or ordinary plastic 5 Store and ship static sensitive devices or printed circuit cards containing such components only in static shielding containers 6 If necessary to repair a printed circuit card containing a static sensitive component wear an appropriately grounded wrist strap work on a conductive surface use a grounded soldering iron and use grounded test equipment Spec No 582136600 Section 6032 Model No 211NGFB IV Issue M January 12 2015 NetSure 48 VDC Power System User Instructions Section 6032 Issue M January 12 2015 System Overview Preface This document Section 6032 provides User Instructions for NetSure Power System Model 211NcrB Spec No 582136600 The complete Customer Documentation Package consists of System Installation Manual e Power System Installation Instructions Section 6031 System User Manual e Power System User Instructions Section 603
14. fier List KG GMT Load Distribution Fuse Panel Module and optional Low Voltage Battery Disconnect LVBD or Low Voltage Load Disconnect LVLD control metering functions monitoring functions and local remote alarms The SCU contains an LCD display and keypad for local access It provides connection for binary inputs programmable relay outputs and a PWR A and PWR B indicator When illuminated green indicate charge control function The controller also supports rectifier power is supplied to the A and B sides respectively temperature compensation if the system is equipped with a temperature probe or multiple temperature probes connected via a Temperature Concentrator SM TEMP and ambient Controller and Rectifier e NCU Controller Instructions UM1M830BNA e SCU Controller Instructions UM1M521BNA Local Controls and Indicators Refer to Figure 1 for indicator locations Note The split A B input bus option provided on this panel is strapped for a single input in this Power System temperature monitoring if equipped with a second temperature FUSE ALARM indicator When illuminated red indicates a load probe The SCU also provides Ethernet connection and SNMP distribution fuse is open The open fuse provides a mechanical capability indicator visible through the fuse safety cover Figure 1 Indicator Locations List KG Maintenance System Maintenance Procedures Important Safety Instructions The maintenance proced
15. ibution Unit options are available as described in SAG582136600 The Distribution Unit can be equipped with an optional Low Voltage Battery Disconnect LVBD or Low Voltage Load Disconnect LVLD contactor ACU Advanced Control Unit Plus The controller provides power system control including optional low voltage battery disconnect LVBD and low voltage load disconnect LVLD control rectifier control including a charge control function metering functions monitoring functions and local remote alarm functions The controller also supports rectifier temperature compensation if the system is equipped with a temperature probe s Temperature Ope ratl ng Procedures probe s may also be designated to monitor ambient temperature and or battery temperature The controller also provides data acquisition system alarm management and advanced batteryand For operation instructions on these units refer to the following energy management The controller contains an LCD display and documents keypad for local access The controller provides an Ethernet port and comes with comprehensive webpages for remote access The controller has SNMP capability for remote system management e ACU Controller Instructions UM1M820BNA The controller supports software upgrade via its USB port Refer to the ACU Controller Instructions UM1M820BNA for more information e Rectifier Instructions UM1R481000 SCU Standard Control Unit Plus The SCU provides Recti
16. l Safety Battery WARNING Correct polarity must be observed when connecting battery leads WARNING Special safety precautions are required for procedures involving handling installing and servicing Performing the following procedures may expose you to hazards These procedures should be performed by DANGER YOU MUST FOLLOW APPROVED SAFETY PROCEDURES qualified technicians familiar with the hazards batteries Observe all battery safety precautions in this associated with this type of equipment These hazards manual and in the battery instruction manual These may include shock energy and or burns To avoid precautions should be followed implicitly at all times these hazards shock and high short circuit current Servicing of WARNING A battery can present a risk of electrical a The tasks should be performed in the order indicated batteries should be performed or supervised only by properly trained and qualified personnel knowledgeable b Remove watches rings and other metal objects about batteries and the required precautions c Prior to contacting any uninsulated surface or The following precautions should be observed when termination use a voltmeter to verify that no working on batteries voltage or the expected voltage is present e Remove watches rings and other metal objects d Wear eye protection e Eye protection should be worn to prevent injury e Use double insulated tools appropriately rated for fr
17. om accidental electrical arcs the work to be performed p a P e Use certified and well maintained insulated tools Voltages Use double insulated tools appropriately rated for the work to be performed Ensure that wrenches AC Input Voltages with more than one working end have only one end exposed DANGER This system operates from AC voltage capable of producing fatal electrical shock AC input power must be completely disconnected from the branch circuits wiring used to provide power to the system before any AC electrical connections are made DO NOT ALWAYS FOLLOW THE BATTERY MANUFACTURER S apply AC power to the system until all electrical RECOMMENDATIONS AND SAFETY INSTRUCTIONS connections have been completed and checked e Dispose of used batteries according to the instructions provided with the batteries Do not dispose of batteries in a fire They may explode DC Input Output Voltages CAUTION Performing maintenance and or DANGER This system produces DC Power and may A troubleshooting procedures may interrupt power to the require battery to be connected to it Although the DC loads if battery reserve is not sufficient voltage is not hazardously high the rectifiers and or battery can deliver large amounts of current Exercise extreme caution not to inadvertently contact or have Handling Equipment Containing any tool inadvertently contact a battery or output Static Sensitive Components terminal or exposed wire connect
18. or to the addition If a rectifier is removed from the system and the Rect Comm Fail alarm is reset the current limit point will remain unchanged unless the capacity of the remaining rectifiers is not sufficient to maintain the present current limit point If that happens the current limit point will automatically increase 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 unit is the total set point divided by the number of units For example if the system contains five rectifiers and the current limit is set to 150 amps then each rectifier has a current limit set point of 30 amps If one or more rectifiers are removed or fail it will take several seconds for the individual set points to the remaining rectifiers to be reset In the example given if one rectifier is removed the current limit set point will drop to 120 amps 30 amps times four remaining rectifiers until the controller can send updated set points to the remaining rectifiers This takes a couple communication cycles several seconds after which each rectifier would have a new set point of 37 5 amps for a total of 150 amps The total current limit of the rectifiers should not be set such that the loss of the redundant rectifiers will cause this temporary set point to drop below the actual
19. put current at current limit Controller The controller controls the operation of the rectifier modules The controller also provides power system control metering monitoring and alarm functions NCU NetSure Control Unit The controller provides power system control including optional low voltage battery disconnect LVBD and low voltage load disconnect LVLD control rectifier control including a charge control function metering functions monitoring functions local remote alarm functions and connections for binary inputs and programmable relay outputs The controller also supports rectifier temperature compensation if the system is equipped with a temperature probe s Temperature probe s may also be designated to monitor ambient temperature and or battery temperature The controller also provides data acquisition system alarm management and advanced battery and energy management The controller contains a color TFT display and keypad for local access The controller provides an Ethernet port and comes with comprehensive webpages for remote access The controller has SNMP V3 capability for remote system management The controller supports software upgrade via its Section 6032 Issue M January 12 2015 NetSure 48 VDC Power System User Instructions Section 6032 Issue M January 12 2015 gil USB port Refer to the NCU Controller Instructions Distribution Unit UM1M830BNA for more information Various Distr
20. ures listed in Table 1 should be performed and recorded at the recommended interval to ensure continual DANGER Adhere to the Important Safety Instructions system operation presented at the front of this document Spec No 582136600 2 Section 6032 Model No 211NGFB Issue M January 12 2015 NetSure 48 VDC Power System User Instructions Section 6032 Issue M January 12 2015 The table references specific sections in the User Instructions Section 6032 or the separate Installation Instructions Section 6031 that help in performing these procedures Table 1 Maintenance Procedures to be Performed at 6 Month Intervals PROCEDURE REFERENCED IN Check ventilation openings for obstructions such as dust papers manuals etc Section 6031 Making Electrical Connections section Inspect and tighten all installer s connections Troubleshooting and Repair Contact Information Support contact information is provided at the back of this document Controller and Rectifiers For troubleshooting and repair instructions on these units refer to the following documents e NCU Controller Instructions UM1M830BNA e ACU Controller Instructions UM1M820BNA e SCU Controller Instructions UM1M521BNA e Rectifier Instructions UM1R481000 Controller Configuration For factory settings of all configurable controller parameters refer to the Configuration Drawing C drawing supplied with your Power System S
21. vailable identification number If desired you can change the identification number Refer to the ACU Instructions Replacement Information UM1M820BNA or NCU Instructions UM1M830BNA for a procedure Refer to the controller instructions for a procedure Replacement Assemblies When a trouble symptom is localized to a faulty Rectifier Module Replacing the Controller or Controller that particular device should be replaced in its entirety Other than a Rectifier Module fan replacement no Refer to the controller instructions for a procedure attempt should be made to troubleshoot or repair individual components on any Rectifier Module or Controller Refer to the separate Controller or Rectifier Module User Manuals for replacement procedures Refer to SAG582136600 for replacement part numbers Spec No 582136600 4 Section 6032 Model No 211NGFB Issue M January 12 2015 NetSure 48 VDC Power System S EMERSON User Instructions Section 6032 Issue M January 12 2015 Alatinsarl Dmrarar Network Power Replacing a GMT Distribution Fuse List 1 and 2 Shelves If a GMT distribution fuse opens replace with the same type and rating or equivalent Refer to SAG582136600 for fuse replacement part numbers Refer to Figure 2 as this procedure is performed Procedure 1 Adhere to the Important Safety Instructions presented at the front of this document This procedure exposes the Distribution Unit BATTERY VOLTAGE is
22. witch mode technology using DSP Digital Signal Processing functionality for efficient operation This means that within the normal operating ambient temperature range and input voltage range the maximum available output power is a constant 500W or 1000W Within these ranges the Rectifier Modules operate in one of three modes depending upon load demands Transition between modes is completely automatic If ambient temperature rises above or input voltage falls below acceptable values Rectifier Modules continue to operate but at derated output power levels a Constant Voltage Mode For any initial output voltage setting from 48 to 58 volts output voltage remains constant regardless of load This is the normal operating condition in which loads are being supplied and batteries are float charged Rectifier Modules operate in the Constant Voltage Mode unless load increases to the point where the product of load current and output voltage is approximately 500W or 1000W b Constant Power Mode As load increases above approximately 500W or 1000W non adjustable output current continues to increase but output voltage decreases as required to maintain constant output power Rectifier Modules operate in the Constant Power Mode unless load continues to increase to the point where the current limit setting is reached c Constant Current Mode If load increases above the current limit setting output voltage decreases linearly to maintain out
23. ystem Troubleshooting Information General This system is designed for ease in troubleshooting and repair The various indicators as described in the Operating Procedures section and the separate Controller and Rectifier User Manuals are designed to isolate failure to a specific element Once the faulty element has been identified refer to the next sections REPLACEMENT INFORMATION and REPLACEMENT PROCEDURES Spec No 582136600 3 Model No 211NGFB Ss EMERSON Network Power Troubleshooting Alarm Conditions on the Controller The controller displays alarm conditions as listed in the Available Alarms section of the separate Controller User Manual Programmable external alarm relays are also available The separate Power System Installation Manual Section 6031 lists the factory default alarm relay configurations Your system may have different configurations then those listed Refer to the Configuration Drawing C drawing supplied with your Power System for your alarm relay configurations The controller s Active Alarm and Alarm Historysubmenus allows the user to view alarm details Refer to the separate Controller User Manual to access these menus Checking the NCU or ACU Controller s Current Limit Point after Adding or Removing a Rectifier If a rectifier is added to the power system the system current limit point will automatically increase by the percentage each existing rectifier was set to provide pri
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