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

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6.2.3 Teamwork Mode 1—Parallel Operation
In Teamwork mode 1, fan speed and cooling capacity are ramped-up in parallel, which means that all units operate
identically.
Teamwork mode 1 is best for small rooms with balanced heat loads. A master unit collects the controlling readings for
temperature and humidity from all the operating (fan on) units in the group, then determines the average or worst-case
reading, and sends operating instructions to efficiently distribute cooling capacity across available units.
In Teamwork mode 1, most parameters are shared and, when set in any unit, are set in all units in the group.
6.2.4 Teamwork Mode 2—Independent Operation
Teamwork mode 2 works well for most applications, and best in large rooms with unbalanced heat loads by preventing units
in a group from operating in opposing modes, some cooling and some heating. All temperature and humidity parameters
are shared by the group. The master unit monitors all available unit-sensor readings and determines the demand for
cooling, heating, humidification and dehumidification, then sends operating instructions to address the greatest demand.
In Teamwork mode 2, the setpoints for all units must be identical. The proportional band, deadband, and related settings
may differ by unit. Fan speed is modulated per unit. Rotation and cascading is not available, so expect uneven distribution
of work hours.
6.2.5 Teamwork Mode 3—Optimized Aisle Operation
In Teamwork Mode 3, the fan speed for all units operates in parallel, which means fan speed operation is identical at each
unit. However, cooling capacity operates independently for each unit.
Teamwork mode 3 takes advantage of variable speed fan options and variable-capacity component options to maintain
rooms with an unbalanced load and to prevent units in a group from operating in opposing modes. All units operate in the
same mode based on the average or worst-case (maximum) readings from the unit sensors. A local control (cooling
capacity supply sensor) provides input to manage and maintain the discharge air temperature at each unit. In addition, fan
speed and operation are controlled based on readings from the unit temperature or static pressure sensors to control air
delivery to the cold aisle.
NOTE: Stand-by and lead/lag are available when using optimized aisle mode, but is not recommended because it
requires less power to run all units at reduced capacity.
Setting Up Teamwork Mode 3
Teamwork mode 3 requires the following:
• iCOM connection to a U2U network.
• Variable capacity compressors in the cooling unit.
• Variable speed fans in the cooling unit.
• Supply control air temperature sensors.
In addition, specific settings for wired remote (rack) sensors and setpoints are needed as described in the following steps.
Vertiv™ | Liebert® iCOM™ Installer/User Guide
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