I-Bus 0818D, Руководство пользователя

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Chapter 4 – Power Distribution
0818D User’s Guide 4-3
4.1.1 Thermal Shutdown
If the internal temperature sensors exceed 100
°
C, the input power
module will shut down and the red Thermal Fault LED indicator on
the front face of the module will illuminate. After the cause of the
over temperature has been corrected and the internal temperature
has returned to an acceptable limit, it is necessary to turn off the
input power for at least two seconds and then turn it on again to
reset the fault condition.
4.1.2 Removal of an Input Power Module
1. Turn off the input circuit breaker and disconnect the input power
cable to the module.
2. Loosen the two captive screws on the power module’s faceplate
as much as possible.
Note: The screws are captive to the faceplate and cannot be
completely removed.
3. Lift up the injector/ejector handle fully to release the module from
the backplane.
4. Slide the module out of the chassis.
4.1.3 Installation of an Input Power Module
1. Slide the replacement power module into the chassis and
engage the injector/ejector handle by pressing it to its full
downward position.
2. Secure the module by tightening the two captive faceplate
screws.
3. Reconnect the input power cable(s) and turn on the input circuit
breaker.
4.2 Power Supplies
Chassis DC power is provided by four front accessible, 200W, DC
input, hot swap, current sharing power supplies in an N+1
configuration. Any one of the four power supplies may be removed
and replaced with the system power on without interrupting the
system. Figure 4-3 shows one of the power supply modules.