Instruction/ maintenance manual of the product MX28B-400 American Power Conversion
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APC DC Networks 11035 Switzer Avenue Dallas, TX 75238 (800) 800-4APC Revision 1 April, 2002 Part Number 990-9218 DC POWER PLANT PRODUCT MANUAL MODEL MX28B-400 +24VDC 400Amp.
MX28B-400 +24V Product Manual ii 990-9218.
MX28B-400 +24V Product Manual 990-9218 iii REVISION HISTORY Revision Date By Description 1 04/19/02 RET I nitial release ..
MX28B-400 +24V Product Manual iv 990-9218.
MX28B-400 +24V Product Manual 990-9218 v TABLE OF CONTENTS 1. GENERAL INFORMATIO N ............................................................................................... 1 1.1 I NTRODUCTION ....................................................
MX28B-400 +24V Product Manual vi 990-9218 5.4 DC SYSTEM GROUNDING ................................................................................................................ 17 5.5 R ECTIFIER I NSTALLAT ION .......................................
MX28B-400 +24V Product Manual 990-9218 1 1. GENERAL INFORMATION 1.1 Introduction DC Power Plants from APC DC Network Solutions I nc. have unique features that make them easy to install, maintain, and upgrade. The rectifier units are modular and truly “ hot-plugg able” into the shelf assembly without any separate ac wiring.
MX28B-400 +24V Product Manual 2 990-9218 If damage has occurred or the quantity of items is not correct, then: 1) Make a descriptive notation on the deliv ery receipt before s igning . 2) File a damag e or shortage report with the carrier that deliv ered the shipment.
MX28B-400 +24V Product Manual 990-9218 3 2. CUSTOMER SERVICE AND SUPPORT APC DC Network Solutions Inc. manuf actures a line of power plants and provides customers with complete product and systems support and serv ice. APC DC Network Solutions Inc. has an international network of f actory trained serv ice technicians.
MX28B-400 +24V Product Manual 4 990-9218.
MX28B-400 +24V Product Manual 990-9218 5 3. WARRANTY PROVISIONS 3.1 General Provisions APC DC Network Solutions Inc. warrants the power equipment and components it manufactures or sells against def ective materials and workmanship fo r a period of TW O (2) YEARS from the date of shipment.
MX28B-400 +24V Product Manual 6 990-9218 4. APC DC Netw ork Solutions I nc. assumes no respons ibility for any work accomplished or expenses incurred except with express ed written consent f rom APC DC Netw ork Solutions Inc.. 5. APC DC Network Solutions Inc.
MX28B-400 +24V Product Manual 990-9218 7 4. PRODUCT OVERVIEW AND TECHNICAL DESCRIPTION 4.1 Description The APC DC Network Solutions Inc. Model MX28B is a modular stand-alone 24V dc power plant.
MX28B-400 +24V Product Manual 8 990-9218.
MX28B-400 +24V Product Manual 990-9218 9 9 Figure 4.1-2. MX28B BLOCK DIAG RAM.
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MX28B-400 +24V Product Manual 990-9218 11 4.2 Power Output Capacity The power supplies a maximum of 400 amps or 300 amps with N+1 redundancy . The housing for this conf iguration prov ides space f or one rectifier s helf that can hold up to f our rectifiers, a control unit, and one tier of up to 24 distribution circuit breakers.
MX28B-400 +24V Product Manual 12 990-9218 4.6 Battery connections Top entry battery connections are made at the top rear of the unit (see F igure 4.6-1). The voltag e and return buses each provide tw o sets of threaded 3/8”-16 holes on one-inch centers for connecting two-hole battery cable lug s.
MX28B-400 +24V Product Manual 990-9218 13 Figure 4.7-1. DC Distribution (Front Cover Rem oved) 4.8 Mounting Both front mounting on standard 2-inch rails and optional wall mounting are av ailable.
MX28B-400 +24V Product Manual 14 990-9218.
MX28B-400 +24V Product Manual 990-9218 15 5. INSTALLATION PROCEDURES 5.1 Preparation 5.1.1 Recommended Tools • = Standard selection of insulated hand tools. • = Proper tools f or crimping the s elected cable lugs. 5.1.2 Recommended Test Equipm ent • = Digital M ultimeter 5.
MX28B-400 +24V Product Manual 16 990-9218 Prior to installation, drawings, f loor loading requirements, external alarm points, ac serv ice entrance, and grounding schemes should all be checked and confirmed.
MX28B-400 +24V Product Manual 990-9218 17 5.3 Battery Connections 5.3.1 Battery Disconnect An external circuit breaker (not supplied) is required in the negativ e line (located at the battery end) to protect the cables from the battery to the MX28B dc power plant.
MX28B-400 +24V Product Manual 18 990-9218 5.6 Alarm Connections The alarm connections for all rectif iers, breakers, and f uses are f actory pre-wired. The MX28B dc power plant, howev er, permits the user to program the s y stem alarms in various w ays .
MX28B-400 +24V Product Manual 990-9218 19 ALARM OUTPUT TERMINAL DESIGNATION NO-NC-C USER ALARM NOTES RELAY #1 RELAY #2 RELAY #3 RELAY #4 RELAY #5 RELAY #6 MINOR MAJOR J1 NO1-NC1-C1 NO2-NC2-C2 NO3-NC3-.
MX28B-400 +24V Product Manual 20 990-9218 A list of GMT ty pe fuses av ailable from APC DC Network Solutions I nc. is provided in Table 5.7-2. FUSE RATI NG PART NUMBER 1/4 A FF A-0030 1/2 A FF A-0031 3/4 A FF A-0032 1 A FF A-0033 1¼ A FFA-0039 1½ A FFA-0035 3 A FF A-0036 5 A FF A-0037 10 A FF A-0038 Table 5.
MX28B-400 +24V Product Manual 990-9218 21 Figure 5.7-1. Installation of Circuit Breakers 5.7.2.2 GMT Fuses Fus eholders that accommodate GMT f uses are located on the interf ace card mounted in the top left side of the unit. These f useholders are only connected to +24V dc if the sy stem has been purchased with the GMT fuse option.
MX28B-400 +24V Product Manual 22 990-9218 5.8 Battery Temperature Probe Installation The optional temperature probe is used to monitor the battery string temperature. To g et the most representativ e temperature measurement, the probe should be placed in contact with a battery cell that is centrally located.
MX28B-400 +24V Product Manual 990-9218 23 1) Battery Float Voltage - default = -27.00V dc (Check the manufacturer’s recommendation for the batteries being used in the sy stem.
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MX28B-400 +24V Product Manual 990-9218 25 6. SETUP, ADJUSTMENTS, AND OPERATION 6.1 User Interface The MX28B control unit prov ides a user interf ace designed with a hierarchical menu that can be viewe.
MX28B-400 +24V Product Manual 26 990-9218 [SYSTEM/IN-RLY/ALIAS] . For inf ormation on wiring connections to these inputs ref er to Section 5.6.1. 6.3 Alarm Output Relays There are eight alarm output relay s desig nated Relay 1 through Relay 6, Minor, and Major, respectively .
MX28B-400 +24V Product Manual 990-9218 27 Table 6.4-1. Parameter Locations, Descriptions, and Default Values PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS SYSTEM SETUP Password Entry P I N E n t r y [PIN] Screen f or entr y of the ac tive pa s sword ( PIN) .
MX28B-400 +24V Product Manual 28 990-9218 ( Table 6.4-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS D i s p l a y T y p e [SYSTEM/SETUP] Type number for the cont rol uni t disp lay. Display Type + 000255 Date/Time S etup Date {1} [SYSTEM/DATE] Inte rnal sy stem calen dar date.
MX28B-400 +24V Product Manual 990-9218 29 ( Table 6.4-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS System Low Temperat ure {1} [SYSTEM/SET-ALM] The contro l unit te mpe rature is be low th e low tem perature thres hold.
MX28B-400 +24V Product Manual 30 990-9218 ( Table 6.4-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS • • • • • • • •.
MX28B-400 +24V Product Manual 990-9218 31 ( Table 6.4-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS High Volta ge Alarm {1} [BATT/SET-ALM] An alarm that is g ene rated if th e m agnitu de o f the batte ry voltage r ises a bove the high volt age thr eshold.
MX28B-400 +24V Product Manual 32 990-9218 ( Table 6.4-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS RFA Alarm {1} [MODULES/RECT/SET-ALM] This alarm ind icates that a re ctifier ou tput h as failed.
MX28B-400 +24V Product Manual 990-9218 33 ( Table 6.4-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS INPUT RELAY SETUP Inpu t Relay 1 Alias {1} [SYSTEM/IN-RLY/ALIAS] An alte rnate n ame (alias) can be assig ned to the relay if desir ed.
MX28B-400 +24V Product Manual 34 990-9218 ( Table 6.4-1. Parameter Locations, Descriptions, and Default Values) PARAMETER DESCRIPTION DISPLAY SCREENS / DEFAULT SETTINGS Outp ut Relay A larms Outpu t R.
MX28B-400 +24V Product Manual 990-9218 35 Figure 6.4-1. Control Unit Menu Structure MX28B + STATUS Sys Voltage Sys Current Sys Temp Batt Current Batt Temp ALARMS Alarm Item 1 Alarm Item 2 Alarm Item 3.
MX28B-400 +24V Product Manual 36 990-9218 (Figure 6.4-1. Control Unit Menu Structure) Address 2 Address 3 Model Fahrenheit Cntrl Rev FW Version Display Type DATE Date Time OUT-RLY RLY-MAP Out-Rly 1 Al.
MX28B-400 +24V Product Manual 990-9218 37 (Figure 6.4-1. Control Unit Menu Structure) Test Relay 1 Test Relay 2 Test Relay 3 Test Relay 4 Test Relay 5 Test Relay 6 Test Min Rly Test Maj Rly MODULES RE.
MX28B-400 +24V Product Manual 38 990-9218 (Figure 6.4-1. Control Unit Menu Structure) FUSE SET-ALM FUSE 1 Alm FUSE 2 Alm • • • • • • • • • • • • FUSE 15 Alm FUSE 16 Alm ALIAS F.
MX28B-400 +24V Product Manual 990-9218 39 (Figure 6.4-1. Control Unit Menu Structure) COMP Comp Method Comp TC Comp HKnee Comp LKnee PIN PIN OEM OEM R Offset OEM R Gain OEM S Offset OEM S Gain.
MX28B-400 +24V Product Manual 40 990-9218.
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