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Operation
3.7.5User Inputs / Customer Inputs
The user can connect and specify up to four inputs depending on unit configuration. The user inputs/customer inputs are digital inputs that influence the operating mode of the unit depending on the selection. The customer input configuration settings are in the Service menu under Set Alarms, Screen 2 of 7. The choices for the customer inputs are shown in Table 7 along with their associated reaction. A terminal strip is provided in the cooling unit to connect your contact closure to. You have the ability to set the control to react on an open or closed contact.
NOTE
To enabled/disabled, delay activation and set event type (alarm, warn, message) see Event Types on page 34.
Table 7 | Customer inputs |
Setting | | Reaction |
| | |
Smoke | | Event Only |
| |
Water Alarm | Event Only |
| |
C PMP Alarm | Event Only |
| | |
Flow Alarm | | Event Only |
| |
Stdby G Pmp | Event Only |
| | |
Stdby Unit | | Event Only |
| | |
C-Input 1 | | Event Only |
| | |
C-Input 2 | | Event Only |
| | |
C-Input 3 | | Event Only |
| | |
C-Input 4 | | Event Only |
| | |
Rht Lockout | | Event + Electrical Heaters Disabled |
| |
Hum Lockout | Event + Humidifier Disabled |
| |
Rht+Hum Lock | Event + Electrical Heaters and Humidifier Disabled |
| |
Comp Lockout | Event + Compressor(s) Disabled w/o Pump Down |
| | |
Call Service | | Event Only |
| | |
High Temp | | Event Only |
| | |
Air Loss | | Event Only |
| | |
FC Lockout | | Event + Free Cooling Disabled |
| |
Heater Alarm | Event + Heaters Off (PeX Only) |
| | |
Flow AL SD | | Event + Shut Down the Unit |
| | |
Flow AL LC | | Event + Lockout Compressors, No Pump Down (enabled only if at |
| | least one compressor is on; auto-reset depends on input status) |
Comp Lock PD | Event + Compressor(s) Disabled w/ Pump Down |
| | |
Enable FC | | Forces Free Cooling to On |
| | |
HTRJ VFD | | Activates the HEAT REJ VFD ALARM; no other function |
| |
HTRJ TVSS | Activates the HEAT REJ TVSS ALARM; no other function |
| | |
Liebert iCOM
Page
Table of Contents
Installing a Liebert Icom UNIT-TO-UNITNETWORK
Teamwork
Mounting a Large Display on a Wall
Figures
Tables
Large and Small Displays
Features
ESC
Icon Key Name Function
Keyboard icons and functions
Status menu, large display, graphical view
Navigating Through the Liebert iCOM Menus
Accessing Submenus
Accessing Submenus on Small Displays
Accessing Submenus on Large Displays
Menu tree-Small display, stand-alone or networked
Entering a Password
Service Menu Unit
Status Menu System View Status Menu Unit 1 View User Menu
Advanced Menu Unit
Service Menu Unit #
Viewing Multiple Units with a Networked Large Display
Advanced Menu Unit #
SET
User menu icons
Service menu icons
Unit/Fan Control Start Stop
Single Unit Functions
Autorestart
Loss of Power Alarm
Fan Alarm / Fan Protection Settings
VSD Setpoint VSD Fan Speed Setting
Pump Down
High Pressure Alarm
Digital Scroll High Temperature
Compressor Timing-Units With Two Compressors
Compressor Sequencing
Service Offset-Changing System Pressure Settings
Motorized Ball Valve in Digital Scroll Units
MBV Operation After Compressor is Turned Off
Temperature proportional band
Temperature Proportional Band
Two Single-Step Compressors Without Unloaders-Two-Step
Compressor Control
Compressor Proportional Bands
One Single-Step Compressor Without Unloaders-One-Step
Two compressors with unloaders four-step
Two Compressors With Unloaders-Four-Step
Digital scroll capacity modulation, 10-100% variable
Digital Scroll Compressors
Chilled Water Control
Temperature Control-Second Cooling Source
Differential Temperatures / Controls Comparator Circuit
Delta T Temperature Difference Between Room and Glycol
Second cooling source and compressorized cooling
Dual Cooling Source
Temperature Control-Reheat
Reheat configuration types
Glycool Cooling-Free-Cooling
Heat On ½ Dead Band 100%
Off ½ Proportional Band Decreasing Temperature
SCR Reheat
Tight Mode
Standard Mode
Humidity Control
Humidification Dehumidification
Humidification
Humidification Infrared Humidifier
Parameters for infrared humidifier control
External Humidifier Control-Optional
Dehumidification Compressor Quantity
Dehumidification With Comp settings
Dehumidification
Dehumidification Low Limit
Temperature and Humidity Control Types
Control Types
Reheat During Dehumidification
Humidity Sensor Reading Control Types
Supply Limit-Optional
High and Low, Temperature and Humidity Events
Customer inputs
User Inputs / Customer Inputs
Event Types
Time Delay
Enable or Disable
Event Types and Properties
Main FAN Overload
Event notifications-large or small display
Possible Event Notifications
Next Maintenance Calculation
Calculation of Next Maintenance and Diagnostics
Calculating Unit Wellness
Compressor 1 / 2 Settings and Diagnostics
Parameters for Next Maintenance Calculation
General Maintenance Settings
Fans / Heaters / Humidifier Settings and Diagnostics
No Teamwork
Teamwork Mode
Teamwork Modes
Application of Teamwork Modes
Teamwork Mode 1 with two cooling units
Standby and Cascade
Standby Rotation Typical Standby Lead/Lag Function
Placement of Cooling Units
U2U Hardware Cables and Network Switch
Minimum Network Switch Requirements
Wiring for Unit-to-Unit Communications-U2U
Sample Liebert iCOM network configurations
Liebert iCOM U2U Ethernet Network
Combining Large and Small Displays on a U2U Network
Wiring a Liebert iCOM U2U Network Small Displays
Large Displays
Wall-Mount Large Display
Wiring a small display for stand-alone operation
Wiring a large display for stand-alone operation
Liebert vNSA
Ports available for connecting Liebert iCOM control devices
298 84mm 305mm 14.25 362mm DPN001136 Rev
Location Considerations
Necessary Mounting Items
Mounting Instructions
Liebert iCOM display dimensions
Event log parameters
Spare Part List-Large Display Only
Setpoints parameters
Spare part list parameters-large display only
Sensor data
Set alarms parameters
Active Alarms
Active alarms parameters
Display setup parameters
Total run hours parameters
Timer parameters-Sleep Mode
Service contacts parameters
Service Menu Parameters
Unit diary parameters
Unit Diary-Large Display Only
Maintenance / wellness settings parameters
Standby settings / lead-lag parameters
Wellness COMP2
Wellness HEAT2
Diagnostics / service mode parameters
ALM REL
7of
Delay
Enable Disab
Enable Disab Comp 1 Overload
Unit X Disconnected WRN Loss of Power LOP MSG, WRN, ALM
Call Service MSG, WRN, ALM High Temperature
Sensor calibration / setup parameters
System / network setup parameters-large display only
GBP
Network setup parameters
Static RAM Not Available, Invalid, OK
HUM Steam
Options setup parameters
Service contact info parameters
Service Menu Parameters
Service Menu Parameters
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