schroff 11990-704, Руководство пользователя

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11990-704/705/706/707 (2-Slot ATCA Shelf)
Power 19 R1.2, March 2018
8.1.2 AC PEM Signals
The AC PEM provides signals for:
• PSU output Voltage monitoring
• PSU output Current monitoring (Min.100W loading for each AC PSU)
• Fuse Monitoring
• Status of the Hot Swap Controller
• Temperature
The I2C devices on the PSU and AC PEM board are connected to Master-Only I2C-bus of the
Fan controller board. The Shelf Manager has access to these signals via IPM-Bus of the Fan
Tray.
8.1.3 AC PEM Indicators
The front panel includes a green and red status LED and a blue hot-swap LED.
Table 9: LEDs on AC PEM
8.1.4 AC PEM Connector PIN Assignment
Color Description Status Condition
Green OK LED Off No Power to the PEM
Solid green Normal Operation
Red Solid red Attention Status (error condition)
Blue Hot Swap LED Off No Power to the PEM or not OK to extract PEM
Short blink Preparing for extraction
Solid blue Ready to remove