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Teamwork
77 Liebert
®
iCOM
®
4.0 TEAMWORK
Unit-2-Unit (U2U) communications via a private network will allow the following functions to be
placed into operation when the requirement exists. The user must install the correct hardware
(see 5.0 - Installing a Liebert iCOM Unit-to-Unit Network) and properly program the units for
the selected functionality.
The Liebert iCOM network can perform the following functions:
The Teamwork Mode functions allow for multiple stages of cooling/heating and
humidification/dehumidification. Teamwork Mode can be used to prevent environmental units from
“fighting,” where one environmental unit might be cooling while another unit is heating.
The Standby (Lead/Lag) function allows one or more units to be set as “Running” and “Standby” for
activation in case of an alarm. This function also allows the units to be programmed in a rotation to
help ensure “Standby” unit operation.
The Cascade Operation function allows additional units to be staged-on based on the temperature
or humidity requirement.
The Virtual Master function provides smooth control operation if the group’s communication is
compromised. When the lead unit, which is in charge of component staging in teamwork, unit staging
and standby rotation, becomes disconnected from the network, the Liebert iCOM automatically
assigns a virtual master. The virtual master assumes the same responsibilities as the master until
communication is restored.
4.1 Compatibility With Previous Liebert iCOM Controls
Extensive upgrades to the Unit-to-Unit communication software prevent Liebert iCOM controls with
PA2.01.48R software from being compatible with Liebert iCOM controls that have earlier versions of
Liebert iCOM software. Liebert iCOM controls with PA2.01.48R software will not communicate with
Liebert iCOM controls with PA1.XX.XXXSTD software.
Customers who have Liebert iCOM controls with the PA1.XX.XXXSTD software and who need
additional Liebert iCOM units can:
• Purchase new units with the previous software installed at the factory
• Purchase new units with the PA2.01.48R software and have a properly trained and qualified
technician downgrade the units to PA1.04.043.STD
• Have a properly trained and qualified technician upgrade the older unit(s) with PA2.01.48R
For further information, contact your local Emerson representative.
4.2 Teamwork Modes
Groups of cooling units connected to a network can be set up to work together in any of these
teamwork modes:
•No Teamwork
• Teamwork Mode 1
• Teamwork Mode 2
• Teamwork Mode 3 (software Rev. PA2.00.05R or higher required)
All Liebert iCOM-controlled cooling units on a network must be set to run in the same teamwork
mode.
NOTE
All connected units in the group must have iCOM software PA2.01.48R or later for the Virtual
Master feature to function.
- 2
- TABLE OF CONTENTS 3
- 1.0 INTRODUCTION 11
- 2.2 System Screen 16
- USER MENUS 20
- 2.5 Display Setup 22
- Figure 16 User menu icons 24
- Table 2 User menu icons 24
- Figure 17 Service menu icons 26
- Table 3 Service menu icons 26
- 3.0 OPERATION 28
- Autorestart 29
- Loss of Power Alarm 29
- Minimum Fan Speed 31
- Operation 32
- 3.1.4 Power Monitoring 33
- Low-Pressure Time Delay 33
- Advanced DX Freeze Protection 33
- Pump Down 34
- High-Pressure Alarm 34
- 25 Liebert 35
- Settings 37
- 3.3 Temperature Control 39
- 3.3.1 Setting Up PI Control 41
- 3.3.2 Compressor Control 42
- Compressor Proportional Bands 42
- 3.4 Liebert Fluid Economizer 45
- Cooling—Free-Cooling 47
- Dual-Cooling Source 48
- 3.4.2 Liebert Air Economizer 48
- DETAIL CDETAIL B 49
- DETAIL D 49
- FRONT VIEW 49
- Both possible low-voltage 50
- Determine which applies 50
- 3.5 Liebert Air Economizer 51
- Operation 51
- System Overview 52
- 3.5.1 Liebert Air Economizer 52
- (Not by 53
- Emerson) 53
- Not in Operation 54
- Startup Configurations 54
- 45 Liebert 55
- 47 Liebert 57
- 3.6.2 SCR Reheat 60
- Tight Mode 60
- 3.7 Humidity Control 61
- 53 Liebert 63
- 3.7.1 Humidification 64
- Infrared Humidifier 64
- 3.7.2 Dehumidification 64
- Dehumidification Low Limit 65
- 57 Liebert 67
- 3.8 Supply Control 68
- 59 Liebert 69
- 3.9.1 Operation 70
- Temperature Compensation 70
- Racks with Equipment 75
- Figure 60 S190 Limit 77
- Figure 61 S190 Control 77
- 3.10.2 User Inputs 81
- 3.10.3 Analog Inputs 82
- 3.10.4 Liebert iCOM-DO 83
- Calculating Unit Wellness 85
- 4.0 TEAMWORK 87
- 4.2.2 No Teamwork 88
- 4.2.3 Teamwork Mode 1 88
- 4.2.4 Teamwork Mode 2 89
- Fixed Speed 90
- Variable Speed 90
- Teamwork 91
- 81 Liebert 91
- Figure 66 Remote sensors 92
- Figure 67 Sensor positioning 92
- 4.2.6 Hardware Setup 93
- 4.3.2 DIP Switch Settings 94
- Unterminated 96
- Terminated 96
- 87 Liebert 97
- 4.3.7 Software Setup 99
- 4.3.8 Standby—Rotation 99
- Standby and Cascade 100
- 91 Liebert 101
- Small Displays 103
- Small Graphics Display 105
- Liebert iCOM 106
- I/O Board 106
- Optional Large 107
- Graphics Display 107
- (Rear View) 107
- Liebert vNSA 108
- SITESCAN 109
- 6.2 Monitoring Points 110
- 7.0 USER MENU PARAMETERS 111
- User Menu Parameters 112
- 103 Liebert 113
- 7.2 User-Graphic Menu Screens 114
- Event Log 115
- View Network 115
- 107 Liebert 117
- 109 Liebert 119
- 111 Liebert 121
- 113 Liebert 123
- Active Alarms 124
- 115 Liebert 125
- 117 Liebert 127
- 119 Liebert 129
- 8.0 SERVICE MENU PARAMETERS 131
- Service Menu Parameters 132
- 123 Liebert 133
- 125 Liebert 135
- 127 Liebert 137
- 129 Liebert 139
- 131 Liebert 141
- 133 Liebert 143
- 135 Liebert 145
- 137 Liebert 147
- 139 Liebert 149
- 141 Liebert 151
- 143 Liebert 153
- 145 Liebert 155
- 147 Liebert 157
- 149 Liebert 159
- Set Alarm Screens, Pages 4-11 160
- 151 Liebert 161
- 153 Liebert 163
- 155 Liebert 165
- 157 Liebert 167
- Freecool Sensor 168
- 159 Liebert 169
- 161 Liebert 171
- 163 Liebert 173
- 165 Liebert 175
- 167 Liebert 177
- 169 Liebert 179
- 171 Liebert 181
- 173 Liebert 183
- 175 Liebert 185
- 181 Liebert 191
- (read only) 193
- Technical Support / Service 196
- Locations 196
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