INSTRUCTION MANUALDocument ID: 73-H001. Copyright © Nilar AB. All rights reserved. Page 6 (32)4.1.4 Steel strapping bands (④, steel grey ●)The battery pack is bind together by three (3) steelstrapping bands. Their function is both to hold themodules together as well as assuring the rightcompression for the battery pack.4.1.5 Module (⑤, light and medium grey ●● )The 12V module is the building block for all Nilar batterypacks. 10 cells are connected in series in a module tocreate modules with a rated capacity of 10 Ah andnominal voltages of 12V.4.2 Integrated Monitoring Unit (IMU)The IMU is attached on front of the battery pack, oneIMU per battery pack. The unit is monitoring the batterypack status and can control an external battery packfan. It communicates via a CANopen interface.Positive terminal (+)Negative terminal (-)Cover lid for connections of IMUIntegrated Monitoring Unit (IMU)Figure 5: 144V Battery pack with IMU on frontData monitored by the IMU:• Module voltages (up to 12 inputs per batterypack)• Battery pack voltage• Battery pack temperature (1 sensor per batterypack)• Battery pack pressure (1 sensor per battery pack)• String current pos./neg. (1 sensor per batterystring, i.e. several series connected battery packs)For a more detailed description of the IMU, please refer to the EDSdescription (doc. Id: SPN-170063-88-H001)