Hardware Setup; Liebert Optimized Aisle Rack Sensor Installation; Figure 51 2T Rack Sensor; Figure 52 Setting Dip Switches For 2T Sensors - Emerson Liebert iCOM Manual

4.2.5

Hardware Setup

The Liebert Optimized Aisle Control requires:
• A temperature/humidity sensor in the cold aisle and connected to the Liebert iCOM via CANbus.
This can be done by:
• Moving the return temperature sensor from the cooling unit to the cold aisle with a longer
CANbus cable
—OR BY—
• Obtaining a remote temperature sensor and addressing it to operate as the return
temperature sensor.
• An additional supply temperature sensor placed under the raised floor.
4.3

Liebert Optimized Aisle Rack Sensor Installation

Each 2T sensor has two wires leaving the housing with temperature sensors on the end of each wire;
see Figure 51.

Figure 51 2T rack sensor

Sensors shown may
differ depending on
equipment installed
To install the Optimized Aisle Control 2T Sensor Array:
1. Set DIP switch settings for 2T sensors.
2. Terminate the final sensor on the CANbus link.
3. Install 2T sensors on racks to be monitored.
4. Install CANbus cable between 2T sensors.
5. Replace CANbus cable between the Liebert iCOM display and the Liebert iCOM main board in
electrical panel with grounded CANbus cable.
6. Install grounding ring connector in electrical panel and connect ground to CANbus cable.

Figure 52 Setting DIP switches for 2T sensors

2T Sensor Housing
Screws,
typically 3
(back)
DIP
switches
Terminating
Jumper
75
Teamwork
2T Sensor Housing
(inside back)
® ®
Liebert iCOM for Liebert DSE
™