HP Modular Cooling System User Manual download pdf (Page 30)

Management module 30

Management module

In this section

Management module overview ................................................................................................................ 30

Management module components............................................................................................................ 31

Accessing the management module through a terminal emulation program................................................... 32

Accessing the management module through the web interface..................................................................... 33

Connecting an external alarm relay.......................................................................................................... 35

Management module overview

The HP Modular Cooling System has a management module which can be accessed remotely through the

web interface, that analyzes, queries, and manages various measurements, and warning and alarm

messages from the unit.

The management module 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 45) 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 alarm is signaled

acoustically 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, about 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 HP Modular Cooling System

• Sending various system values to the web interface

The web interface displays various measurements and warning and alarm messages (on page 45) 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 Modular Cooling System

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

• Hysteresis Value—Value used by the management module for air temperature regulation

• High Temperature Threshold—Temperature difference above Server Intake Temperature Set Point for

temperature-critical alarm message

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 83 84

No comments

HP Modular Cooling System User Manual Page 30