Page 2 IM02601004E www.eaton.com1 IntroductionImprovements:• Internal RAM - from 32 MB SDR SDRAM to 256 MB DDR2 SDRAM• Data Storage - increased from a 512 MB (std)/1GB(option) to a fixed 2/4/8 GB for PXM4000/6000/8000, respectively.• Waveform Capture - increased storage sample from 256 samples/cycle to 512 samples/cycle at60 Hz. Delta-sigma over-sampling increased from 1024 samples/cycle to 4096 samples/cycle.• Transient Capture Resolution - increased from a 10-bit A/D to 14-bit A/D on PXM 8000• Maximum Operating Temperature - increased from 60° C to 70° C• Com Reset Button - added to restore Ethernet and other communications to the factory defaults• Mode Switch Selections - added troubleshooting mode to evaluate the system and connectivity.Items Remaining the Same:• Wiring• I/O and communications expansion cards• Local Display• Panel mounting brackets• Old PX .zip setting files can be loaded into the PXM, which updates its formatOther Changes:• Meter includes blue highlights, on bottom, as shown below.• Model number has been changed from PX to PXM, and previous digit for the memory option willbe “1” to represent standard communiction• Power supply module has changed and cannot be used with first generation meters (PX) andvice versa• Low voltage (24-48 VDC) DC version is not available for the PXM• Real-time clock - 10-year battery moved from power module to coreboard• The new PXM firmware has been written to be compatible with the older PX meters on itsRS485 subnetwork; however, the PXM must be the master in this arrangement.This Instruction Manual describes the PXM 4000/6000/8000 series. For instructions and specifica-tions on the PX4000/6000/8000 series refer to IB02601003E.1.3. ApplicabilityThis manual applies to the Power Xpert Meter and display in the following configurations:Power Xpert PXM4000 MeterPower Xpert PXM6000 MeterPower Xpert PXM8000 Meter