RELIANCE 802267-251V Servo drive module

Connector J15 is a standard double-row 100-pin socket connector mounted on the MVME172LX Embedded Controller PWB. It connects to a corresponding 100-pin plug connector on the ECC DRAM mezzanine board and (together with J22) carries the DRAM address, data, and control signals to and from the mezzanine board. The following table lists the pin assignments for J15.

Two three-row 96-pin DIN type connectors, P1 and P2, supply the interface between the base board and the VMEbus. P1 provides power and VME signals for 24-bit addressing and 16-bit data. Its pin assignments are set by the IEEE P1014-1987 VMEbus Specification. P2 Row B supplies the base board with power, with the upper 8 VMEbus address lines, and with an additional 16 VMEbus data lines. P2 rows A and C are not used in the MVME172LX implementation.

Board Specifications

 The following table lists the general specifications for the MVME172LX VME embedded controller. The subsequent sections detail cooling requirements and EMC regulatory compliance. A complete functional description of the MVME172LX boards appears in Chapter 4. Specifications for the optional IndustryPack modules can be found in the documentation for those modules.The incoming air temperature is measured between the fan assembly and the card cage, where the incoming airstream first encounters the module under test. Test software is executed as the module is subjected to ambient temperature variations. Case temperatures of critical, high power density integrated circuits are monitored to ensure that component vendors’ specifications are not exceeded.

Cooling Requirements

 The Motorola MVME172LX VME Embedded Controller is specified, designed, and tested to operate reliably with an incoming air temperature range from 0° to 55° C (32° to 131° F) with forced air cooling of the entire assembly (base board and modules) at a velocity typically achievable by using a 100 CFM axial fan. Temperature qualification is performed in a standard Motorola VME system chassis. Twenty-five-watt load boards are inserted in two card slots, one on each side, adjacent to the board under test, to simulate a high power density system configuration. An assembly of three axial fans, rated at 100 CFM per fan, is placed directly under the VME card cage.

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