Emerson Liebert iCOM, Руководство пользователя

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Service Menu Parameters
Liebert
®
iCOM
®
for Liebert DSE
™
108
Figure 83 Setpoints screen, page 2 of 9
S113 Enable Temp Compensation —Temperature compensation allows for a second or third sensor
to be used that will influence the unit’s cooling or heating. Three selectable values are available:
Return, Supply, and Ret + Sup (Return plus Supply). See 3.6 - Supply Control for more information.
S114 Return Compensation Setpoint —The temperature setpoint where compensation begins to
operate by increasing the supply air setpoint.
S115 Return Compensation Band/Value —The return compensation band / value will determine
how quickly the cooling capacity is adjusted as the return temperature drops below the return
compensation setpoint.
S116 Supply Compensation Value —The Supply Compensation value determines how much the
supply temperature setpoint will be reduced when the units fan speed is at 100% and the cold aisle is
not able to maintain temperature setpoint.
Any modifications to the supply temperature setpoint will be shown at the temperature setpoint on
parameter S103 as the actual active control point.
S118 Comp Cap Filter at 0-100% —Controls the rate of change during comp load changes to avoid
overshoots. The filter value depends on the current control deviation from the setpoint.
On the setpoint (at 0%), it’s typically set lower (slow), and at the end of the P-band (at 100%) it’s
typically set higher (faster). The value is given in % control output change per second.
S119 Capacity Transition Filter —This parameter should only be adjusted by a factory-service
trained technician. The transition capacity filter controls how quickly the capacity changes between
different modes of operation.
This filter helps with the transition to avoid overshoot.
S120 CW Cap Filter at 0 - 100% — The CW Filter at 0% / 100% Controls the rate of change during a
valve position adjustment to avoid overshoots. The filter value depends on the current control deviation
from the setpoint. On the setpoint (at 0%), it’s typically set lower (slow), and at the end of the P-band (at
100%) it’s typically set higher (faster). The value is given in % control output change per second.
S121 BMS Backup Temp Setpoint —Selects a temperature setpoint that will be activated in the
event of a BMS timeout. The BMS timer must be configured for this parameter to be activated. If the
unit is operating in “Coupled” mode (located in Service Menus>Setpoint, S163), this setpoint will
affect the fan control setpoint. This temperature may affect fan speed if the control is set up to operate
in Coupled Mode during normal operation (see Table 5 ). This parameter is adjustable from 41-104°F
(5-40°C). The default setting is 73°F (23°C).
S122 2nd Temperature Setpoint —Permits programming an alternate temperature setpoint that is
activated by a dry contact through the customer input connections. When a customer input
connection is set to “2nd Setpoint” and the input wired to that input is active, then the value set in
this parameter becomes the active temperature setpoint. This parameter is adjustable from 41°F to
81°F (5-27°C). The default setting is 41°F (5°C).
This temperature may affect fan speed if the control is set up to operate in Coupled Mode during
normal operation (see Table 5 ).