Management module, Management module overview – HP Modular Cooling System User Manual
Page 33
Management module 33
Management module
Management module overview
The HP mc-Series 5042 Rack has a management module, which can be accessed remotely through the web
interface. The management module analyzes, queries, and manages various measurements and warning
and alarm messages from the unit.
The management module (on page
) analyzes measurements provided by each sensor or module,
generates any necessary warning or alarm messages, and then sends them to the web interface. When a
new warning or alarm occurs, the warning and alarm messages (on page
) appear on the operator
display as well as on the web interface Alarms menu and Alarm History menu. An alarm relay is also
activated (if installed on the unit and enabled in the appropriate web interface menu), and an audible alarm
is signaled by the internal beeper (if enabled in the appropriate web interface menu).
The management module performs regulation operations such as:
•
Retrieving all measurements from the fan units and the water units in cycles, approximately once per
second (temperature, fan speed, and chilled water flow rate)
•
Analyzing all measurements and generated alarm and warning messages
•
Calculating heat removed from the water flow rate and temperature of the water supply and return
•
Measuring water flow rate
•
Regulating the server air inlet temperature by controlling the water flow
•
Sending control settings for fan speeds back to the MCS 5042 unit
•
Sending various system values to the web interface
The web interface displays various measurements and warning and alarm messages (on page
) from the
management module. Also, various system values can be set through the web interface and sent to the
management module. For more information about the web interface, see the HP mc-Series 5042 Rack Web
Interface User Guide.
The following values can be set through the web interface and sent to the management module:
•
Server Intake Temperature Set Point—Target value used by the management module for server intake
regulation
•
High Temperature Threshold—Temperature difference above Server Intake Temperature Set Point for
temperature-critical alarm message
•
Warning Temperature Threshold—Temperature difference above Server Intake Temperature Set Point
for temperature warning message
•
Low Temperature Threshold—Temperature difference below Server Intake Temperature Set Point for
temperature warning message
The following values are displayed in the web interface for information only:
•
Fan Speed—Displays the fan speed percentage
•
Water Valve—Displays the water valve state