Vertiv Liebert iCOM DP400/500, Инструкция по установке и эксплуатации

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Line
ID
Parameter
Name
Range
Default
Setting
Description
S146
Fan Control
Sensor
Supply Sensor
Remote
Sensor Return
Sensor
Manual
Return
Sensor
Controls the fan speed for modulation. If MANUAL is selected, then the fan speed can be
controlled from the local display or through a building management system.
S147 Fan Setpoint
41 - 104 °F
5.0 - 40.0 °C
73 °F
22.8 °C
Activated when a temperature sensor is being used to control the fan speed. If the same
sensor is used for temperature control and fan speed control, then this value will reflect the
same setpoint as the temperature control setpoint. Manual mode uses fan speed STD for
control.
S148
Fan
Temperature
Control Type
Proportional
PI
Adaptive PID
PI
Sets the type of control the unit will use to control fan speed. PI control gain is set in the Temp
Prop/Integral parameter. PI control will operate the fan speed so that the actual temperature
of the fan control sensor is equal to the fan temp setpoint. If PROPORTIONAL only is
selected, the fan will change "ONLY" based on the deviation from setpoint which will allow the
actual temp to settle higher than setpoint.
149
Fan
Temperature
Control Prop
Band
4 - 200 °F
2.0 - 111.0 K
36 °F
20.0 K
Adjusts the fan speed rate of change based on the actual sensor values deviation from
setpoint. The small this number, the faster the fans will increase speed. Too small of a number
may cause the fans increase/decrease to overshoot setpoint
Fan
Temperature
Control
Integration Time
0.0 - 15.0 min 1.0 min
Adjusts the fans of the unit based on time away from setpoint so that accurate temperature
control can be maintained. The proportional and intergral work together to maintain setpoint.
Large p-band with small integral time is a typical way to achieve stable control.
S150
Fan CFF
Hysteresis
0 - 20 % 0.02
Modifies the reaction of the fan speed when fanspeed is being dictated by the Call for
Cooling. Adding the Hysteresis may result in a lagged response to changes in fanspeed.
Fan Deadband
0 - 36 °F
0 - 20.0 K
1 °F
0.6 K
Avoids overshooting of the setpoint. The value entered in this field will be split in half by the
fan speed setpoint
S151
Airflow
Calibration
3.0 - 10.0 V 10.0 V
Allows the front display to be scaled to show the actual percentage of airflow independent of
the voltage operating the fan speed. This value cannot be set above/below the Analog
Output High/Low Limit for the fan set in the Advanced Menu. This also includes the service
menu fan speed parameters.
S152
Fanspeed VSD
Setpoint
Minimum
0 - 100 % 0.7
Sets the range for the variable fans. Min sets the minimum speed that the fan will operate at.
Fan speed is modulated between MIN and STD based on which sensor is set as the controlling
sensor, setpoint and the PI settings. If the controlling sensor is set to manual, then the STD
setting will control the current fan speed. This parametter is also adjustable through the BMS.
Fanspeed VSD
Setpoint
Standard
0 - 100 % 1
S153
Fanspeed VSD
Setpoint Dehum
0 - 100 % 70%
Sets the fan speed when a call for dehumidification is active. This allows the units fan speed
to be ramped lower to help with any overcooling due to the dehumidification process. This
also allows the coil to remove additional moisture even faster
Fanspeed VSD
Setpoint No
Power
0 - 100 % 100%
S154
Allow Fan
Modulation on
Compressors
No Yes Yes
Provides the option to set the fan to fixed speed if unit is equipped with compressors. Once
this parameter is set at the local display, it must be removed at the local display to re-engage
fan speed control.
Table B.2 Service Menu Setpoints by Line ID (continued)
139