Vertiv™ | Liebert® DM | User Manual 61
Electrical Installation
3.6. Notes on Installing and Using the Energy-saving Card
1. It is recommended to configure the energy-saving card on the cabinet with a heavy thermal load to obtain the most
accurate temperature value. Each energy-saving card monitors the air temperature entering each cabinet and the
temperature value is used to control the unit operation.
2. The standard position of the energy-saving card is placed 1.5m high from the ground. Each energy-saving card can be
attached to the cabinet using the attached magnet.
3. The energy-saving card needs to use the standard straight-through cable. The connector at one end of the network
cable is plugged into the J38 energy-saving card interface on the unit’s printed circuit board, refer Figure 3-10.
4. The other end of the cable is routed from the top of the unit and connected to the J45 interface of the first sensor, then
from the other end of the first sensor to the second sensor J45 interface, and so on, forming a link as shown in
Figure 3-16.
Figure 3-16 Connection of Energy-saving Card
5. After the energy-saving card is installed, refer Table 3-3 to set the energy-saving card DIP switch to complete the
address setting.
Table 3-3 Energy-saving Card IRM-S02TH DIP Switch Address Setting
Energy-saving Card 1 2 3 4 5 6 ID No.
ON — “1”
OFF — “0”
Energy-saving card 1 0 0 0 1 0 0 10
Energy-saving card 2 0 0 0 1 0 1 11
Energy-saving card 3 0 0 0 1 1 0 12
Energy-saving card 4 0 0 0 1 1 1 13
6. Through the microprocessing controller:
i. Enter the third-level password to access the operation and maintenance menu-option function.
ii. Set the energy-saving card type to 1, check whether the energy-saving card quantity setting value is consistent with the
actual quantity.
iii. Set the sleep temperature, and check if the temperature display of each energy-saving card is normal.
The sleep mode can be activated only when the number of energy-saving cards is not zero. Only the
Liebert DM unit with more than one energy-saving card can enter sleep mode. For the system with the main
and backup units, the main and backup units cannot share the energy-saving card.
To Next Page
Loading...
