nvent Schroff 14579-040, Руководство пользователя

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14579-040 (PXIe System)
10 18 Slot PXIe Backplane (23007-518) R1.5, January 2021
3.5 Schroff PXIe Chassis Management Module (CMM)
The Schroff PXIe Chassis Management Module (CMM) allows access from the operating
system to all important chassis functions. The CMM provides an I2C interface which is
connected to backplane SMB (system slot pins XP3-a3, -b3).
The CMM:
• Monitors all chassis voltage levels
• Monitors and control the power supply
• Monitors and control the fans
• Monitors the chassis temperatures (inlet and outlet)
• Controls SYNC100 frequency from clock module
• Controls the PXI trigger bridges
• Controls the chassis status LEDs
I2C interface
(to SMB on backplane
pins XP3 -a3, -b3)
Backplane voltages
(5 V aux, 5 V, 3,3 V, +12 V,-12 V)
Temperature Sensors (4x)
Select “PS_ON” source
“PS_ON” from system slot source
“PS_ON” external source
4x “PS_ON” output
(for different PSU modules)
FAN PWM (fan speed control)
6x FAN Tacho
“AC_OK” from PSU
Chassis status LEDs
I2C
Trigger Bridge1
Clock Module
CMM module
μC
Default I2C
address 0x58h
Trigger Bridge2
Trigger Bridge3
Trigger Bridge4
To use the CMM‘s full capabilities, you have to access the CMM‘s I²C register with the
Schroff Embedded Controller or another appropriately configured and programmed third
party system controller.
For further information see CMM User Guide, Ord--No: 63972-391