Emerson Liebert iCOM Manual De Usuario

S190 Static Pressure Fan Control—Enables or disables the use of static pressure control for fan 

modulation. This parameter is selectable between Disabled and Enabled. The default is Disabled.
S191 SP Setpoint—Sets the static pressure setpoint to be used by the control to modulate fan 

control. This parameter is selectable from 0.010 - 1.003 inWC. The default is 0.020 inWC.
S192 SP Deadband—Sets the static pressure deadband. This parameter is selectable from 0.010 - 

1.003 inWC. The default is 0.020 in WC.
S193 SP Min / Max Pause—Sets the minimum and maximum pause times when the static pressure 

crosses into the deadband border. The fanspeed will stop increasing or decreasing based on the time 

set in these parameters. This parameter are selectable from 0-180 sec for SP Min and the default is 30 

sec and parameter SP Max is selectable from 2-180 sec and the default is 60 sec.
S194 SP Pulse inside DB—Sets the pulse time that the speed filter, S158, will be performed to the 

fan analog output. This parameter is 2-15 seconds; the default is 3 seconds.
S195 SP Fanspeed P-Band—Sets the proportional band for which the fanspeed modulation output 

calculation is based upon in relation to the difference between the pressure reading and the SP 

Setpoint. This parameter is selectable from 0.010 - 1.003 in WC. The default is 0.020 inWC.
S196 SP During Dehum—Sets the use of static pressure control if dehumidification becomes active. 

If set to Disabled, then the static pressure routines will become inactive and the fan will be allowed to 

ramp to the dehumidification speed set on line S153. If set to Enabled, then the static pressure 

routines shall remain active during the call for dehumidification. The default is Disabled.
S197 SP Teamwork Mode—There are modes available for static pressure teamwork functionality: 

Average and Minimum. When selecting the Average Mode: the average of the lowest static pressure 

readings in the system will be averaged to generate a shared static pressure value for all units in the 

team. The number of static pressure sensors to be averaged is set on line S198. When this number is set to 

a value lower than the number of units in the team, the lowest static pressure readings will be averaged.
When selecting the Minimum Mode: the lowest static pressure reading in the team will be applied to 

the entire team. This parameter may be set to Average or Minimum. The default is Average.
S198 SP Sensors in Avg for TW—Sets the number of sensors used when averaging sensors in the 

team work. This parameter is selectable from 1-32. The default is 2.
S199 - Operation @ Sensor Failure—This parameter determines what action to take if the static 

pressure sensor fails (non-teamwork). There are two options to use when handling a static pressure 

sensor failure, they are SP OFF = static pressure control Off, where the control will use S146 to 

control the fan when the sensor is lost or Freeze Speed = keep the fanspeed unchanged based on the 

last reading to Liebert iCOM. Functions that need to override fanspeed, such as freeze protection, can 

still change the fanspeed.