Appendix B: Setpoints and Alarm Settings by Line ID
These tables list the parameters by the line identification assignments employed before the Vertiv™ Liebert® iCOM™
touchscreen. The tables include range/options of the parameter, the factory-default setting, and a description of the
parameter function.
The line IDs are not listed in the User or Settings menus, only in the parameter directory. You can search the parameter list to
find the line ID and it's associated label and value in the Liebert® iCOM™ user interface.
To search the parameters list:
1. Log in at the Service level, then touch > > Parameter Directory.
2. Enter a line ID or term in the Search field, and touch .
B.1 Line IDs for Setpoint Parameters
Line
ID
Parameter
Name
Range
Default
Setting
Description
S102.1
Temperature
Control Sensor
Supply Sensor
Return Sensor
Remote Sensor
Return
Sensor
Selects which sensor will be controlling/influencing the cooling capacity. Cooling
capacity is either the chilled water valve, compressor, free cooling valve, or air
economizer. Unloading type compressors can be set to any sensor type; however, fixed
style compressors can only be set to Return or Remote control sensor.
S103.1
Temperature
Setpoint Actual
32 - 113 °F
0.0 - 45.0°C
73°F
23.0°C
The temperature setpoint actual value is a read-only value that indicates if another
routine, such as supply compensation has internally modified the Temperature
controlling value. If compensation has not been activated, the ACT and SET will always
match.
S103.2
Temperature
Setpoint
41 - 104°F
5.0 - 40.0°C
73°F
23.0°C
Selects a temperature that the cooling unit will maintain by applying cooling and/or
reheats. The temperature setpoint value that has been set by the User to control the
temperature.
S104.1
Temperature
Control Type
Proportional PI
Adaptive PID
Intelligent
PI
Sets the type of control to be followed: Proportional, PI, Adaptive PID (auto-tuning),
Intelligent
S105.1
Temperature
User Low Limit
41 - 104°F
5.0 - 40.0°C
41°F
5.0°C
Defines the temperature range below setpoint; temperature setpoint cannot be
adjusted below this value. If the setpoint value has been adjusted lower than this
setting, then the setpoint will automatically default back to its previous setting.
S105.2
Temperature
User High Limit
41 - 104°F
5.0 - 40.0°C
10°F
40.0 ◦C
Defines the temperature range above setpoint; temperature setpoint cannot be
adjusted above this value. If the setpoint value has been set higher than this setting,
then the setpoint will automatically default back to its previous setting.
S106.1
Temperature
Proportional
Band
4 - 200°F
2.2 - 111.0 K
12°F
6.7 K
Adjusts the activation points of compressors/chilled water valves or rate of changed
based on the actual sensor values deviation from setpoint. The smaller this number, the
faster the compressors/chilled water values will increase capacity. Too small of a
number may cause the unit to short cycle compressors or excessively reposition the
valve.
S106.2
Temperature
Integral Time
0.0 - 15.0 min 5.0 min
Adjusts the capacity of the units based on time away from setpoint so that accurate
temperature control can be maintained. The proportional and integral time settings
work together to maintain setpoint. Large p-band and small integral time is typical when
controlling to supply air.
Table B.1 Service Menu Setpoints by Line ID
205
Vertiv™ Liebert® iCOM™Installer/User Guide
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