Table of Contents
Advertisement
PAC2000S12-B1 PSU
The PSU uses the extraction mode for heat dissipation. The air blows in from the rear and blows out
from the front.
The fan meets the following requirements:
1.
In MV6 working mode, the PSU works at the lowest rotational speed, and overtemperature
protection should not be triggered.
2.
In MV12 working mode, the PSU works at the required rotational speed, and overtemperature
protection should not be triggered.
3.
The fan cannot stop rotating in the case of reverse power supply of the PSU.
4.
The fan works at full speed before the PSU triggers overtemperature protection.
The PSU supplies power to the internal fans. It contains a fan speed control circuit to vary the fan
speed.
Figure 7-1
shows the details about the air channel.
Figure 7-1 Air channel
Power Supply to the Fan
1.
If the fan is powered by the output busbar, PSU swap, fan startup and shutdown, and fan faults
should not cause the system busbar to drop out of the regulated voltage precision.
2.
The fan should be isolated if a fault occurs.
3.
The system sends a command to clear the fault so that the fan can work again.
4.
The system can deliver a command to turn off the fan.
Figure 7-2
shows the fan power supply circuit.
Technical Manual
7
Internal Cooling Fan
29
7 Internal Cooling Fan
Advertisement
Table of Contents
