User Manual

V3 Clim ate U nitClimate Unit for RB S 2102
Heat exchanger The heat exchanger is a counter flow air-to-air cooling
device which allows the transfer of heat from the
internal RBS air flow to the external ambient air. At
internal cabinet temperatures lower than 45
C, the
heat exchanger is sufficient to control the internal
temperature. When the internal temperature exceeds
45
C, the air conditioner must be used to remove heat
from the air in the RBS.
Air Conditioner
When the air conditioner is activated, the internal
cabinet air is transferred by the climate unit internal fan
from the RBS cabinet fans through the heat exchanger
and then to the evaporator where it is cooled before
being returned to the RBS.
Cabinet Subrack
Fans
The four cabinet subrack fans are controlled by the
ECU via the FCUs, one FCU per two cabinet subrack
fans. The cabinet fan speed i
s r egulated by the ECU.
Heater
The heater is comprised of a heating element and a fan
with a separate airflow.
Climate C ontrol
Unit
The CCU provides the following main control functions:
• Test buttons to activate the heater or the
compressor for testing
• Strapping options through CCU
5Interfaces
In this section the signal and power interfaces are described, as w ell as the
operator interface.
5.
1
Si
gnal and Power Interfaces
There are three signal and power interfaces:
• DC Power
• AC mains power
• Control cable
5.2 O perator Interface
This section describes the operator interface, indicators and switches on the
CCU on the climate unit, see figure and table below.
6(8)
EN/LZT 720 0 280 Ue n R1A