MKM Multi-Kilowatt Module User Manual P/N: URB0001 P/N: URB0001-SMB P/N: URB0003 P/N: URB0003-SMB MKM Multi-Kilowatt Module User Manual Newark, New York | 315-332-7100 | Fax: 315-331-7800 ©2013 Ultralife Corporation • www.ultralifecorp.com • All information is subject to change without notice. The information contained herein is for reference only and does not constitute a warranty of performance.
Copyright Copyright © 2013, Ultralife Corporation. All Rights Reserved. Disclaimer of Liability Information and descriptions contained in this manual are the property of Ultralife Corporation. Distribution and/or reproduction in part or in whole are expressly forbidden without written consent. Ultralife Corporation believes that information in this publication is accurate as of its publication date.
CONTENTS 1 ABOUT THIS MANUAL .................................................................................................. 4 1.1 1.2 1.3 1.3 1.3 Symbols Used ................................................................................................................. 4 Cautions .......................................................................................................................... 5 Warnings .......................................................................................
1 ABOUT THIS MANUAL Please be sure to read all points in this section in their entirety before proceeding further. 1.1 Symbols Used The symbols shown in this section appear throughout this manual. The NOTE symbol identifies important information that requires special attention. The other symbols represent important safety advice, and appear in the form of WARNINGS and CAUTIONS against possible hazards to people or equipment, respectively. These safety WARNINGS and CAUTIONS must be followed at all times.
1.2 Caution Do inspect all cables and connections for damage prior to use Do install only with like MKM products Do not mix MKM part numbers Do follow all charging recommendations Do recharge batteries every 6 months minimum Follow all safety instructions Do not stack over 4 units high Do use 2 man lift 1.3 Warnings Do not expose to water Do use only approved chargers or consult factory 1.
2 PRODUCT DESCRIPTION The Multi Kilowatt Modules are large format battery products based on various Lithium Ion chemistries. The chemistry of this group of MKM batteries is based on Lithium Iron Phosphate, offering a very high cycle life and safety characteristics. Nominal voltage for the listed models is 24VDC, with an overall range of 23V to 28.8VDC. The MKM products have Ultralife SmartCircuit® Protection electronics and fuel gauging.
1. Power Connection The main connector is an Anderson Power Products SB120 style power plug. The mating plug has + / - labeled as to the correct orientation. 2. Ground Stud There is a ground stud on the front panel to protect the panel from being inadvertently energized, connect this stud to a known good ground. 3. Comm Port The communication connector is a standard RJ45 connector. There are several protocols being used in various versions of MKM. Initial versions have I2C protocol as standard.
5. Auxiliary Connector This connector is an Andersen Power Products Power Pak 6 Position connector. The auxiliary connector has internal form-C relay connections and the connection for an external balancing resistor; one position is empty (red). The form C normally closed contact is connected to the black and green positions on the auxiliary connector. The normally open contact is connected between the yellow and black positions on the auxiliary connector.
2.2 Discharging The MKM products can be discharged repeatedly to 100% depth of discharge during use. The MKM products have an extremely low internal resistance which allows high utilization of internal battery energy with little loss due to heat. In system design, care should be taken to limit capacitance to less than 2mF on the target device, as this can lead to high inrush currents and nuisance tripping of the protection electronics over current protection.
2.5 Series Connections Series connections can lead to high voltages and should be carefully configured by experienced and qualified personnel only. Please refer to proper codes and guidelines for safe installation. Refer to the latest edition of the National Electric Code for additional details. For series installations, it is recommended a cutoff voltage be set to 23.25V per series module.
3 Appendix A 3.1 Communication Port The communication port is a direct I2C Connection to the internal fuel gauge. The fuel gauge is programmed at the factory for the specifics of the MKM chemistry. There are a few correction factors needed to use the data stored in the fuel gauge. Voltage must be multiplied by 8. Current must be multiplied by 72. Capacity in Ahr must be multiplied by 72. All registers in the fuel gauge are available on the datasheet for the MAXIM 17047 Model M3 Fuel Gauge. 3.
