Figure 90 Setpoints Screen - Emerson Liebert iCOM Manual

Figure 90 Setpoints screen, page 9 of 9
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 pauses 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 sec and the default is 3 sec.
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. This parameter is selectable
between Enabled and Disabled. 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 is selectable between Average and 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.
® ®
Liebert iCOM for Liebert DSE
™
116
Service Menu Parameters