Vertiv Liebert iCOM DP400/500, Installer/User Manual

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Temperature Control Options
AutoSet Enabled
When enabled, the proportional band for temperature and humidity and both integration time factors are set
automatically based on the type of cooling unit (single compressor, dual compressor or chilled water).
NOTE: General settings cannot be adjusted or changed when AutoSet is enabled. If you make a change when AutoSet
is enabled, the parameter defaults back to its original setting.
BMS Backup Temp Setpoint
Temperature that the cooling unit maintains during BMS backup operation.
Temperature Control Sensor
Selects sensor that controls cooling. Values are:
• Supply Sensor:Temperature control is based on maintaining the temperature of the discharge air from the
cooling unit. See
Supply Sensors on page 88.
• Remote Sensor: Temperature control is based on the temperature reading(s) from wired remote/rack sensor(s).
See
Wired Remote Sensors on page 86.
• Return Sensor: Temperature control is based on maintaining the temperature of the room air.
• Customer input setpoint (remote alarm device).
Temperature Control Type
Control when staging cooling and heating operations. Valid values:
• Proportional: Percent of cooling/heating determined by the difference between the air temperature sensor
reading and the temperature setpoint.
• PI: Percent of cooling/heating calculated using the temperature proportional band and temperature integration
time settings. See
Considerations when Using PI Temperature Control on page 23.
• Adaptive PID: Auto-tuning PID control loop, can be set for cooling. Only available on Liebert® CW (chilled
water) systems.
• Intelligent: Percent of cooling/heating determined by programmed logic that simulates manual human control.
Temperature Deadband
Widens the setpoint to prevent small temperature changes from cycling compressors and valves maximizing
component life. When temperature is within the deadband, no change of the control output (heating/cooling) occurs.
Temperature Integration Time
Adjusts amount of cooling/heating based on the length of time the temperature has deviated from the setpoint. The
time selected is the amount of time it will take cooling capacity to reach 100%. For example, if three minutes is
selected, cooling capacity will increase to 100% in three minutes.
NOTE: Three to five minutes of integration time is adequate for most applications. See Considerations when Using PI
Temperature Control on page 23.
NOTE: Only used when Temperature Control Type is PI.
Vertiv™ | Liebert® iCOM™ Installer/User Guide
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