Emerson Liebert NX 50 and 60 Hz - Manual (Page 55)

Battery Installation
43
2.6.1 Battery Temperature Sensor—Optional
The optional external battery temperature sensor kit, supplied separately from the battery circuit
breaker, contains one probe and one temperature transport board as illustrated in Figure 26. It is
connected to the UPS Monitor Board (either directly or in case of multiple sensors, through the bat-
tery circuit breaker board - see Figures 26 and 27).
Figure 26 Single temperature sensor and monitor board—U2
Table 11 Battery control label description (X102)
BCBB
X-102
Ref Label Monitor Bd
Reference
Label
Description Signal status
1 DRV
BCB-X3
on U2 Monitor
board
DRV
Battery circuit breaker tripping
control signal from UPS Normal: H level voltage, BCB can close
Abnormal: L level voltage, BCB trips
2 IN (AUX) FB (IN)
Bat CB auxiliary status contact
(Open contact = CB open) Normal: OV when BCB is closed.
Abnormal: open when BCB is open
4 USE
OL =
On Line Bat CB Board status signal
(GND = OV from BCB Bd)
Normal: 0V, the BCB Board is in use.
Abnormal:. open, the BCB Board is not
in use.
3 GND1 GND GND1 GND1 to GND on U2 board
5 (1) +12V
X7
on U2 Monitor
board
P12
+12V Power supply from
Monitor Bd to Temp Monitoring
Probe & Buffer
Power available: 3W.
6 (3) 0V GND2 GND2 GND2 to GND on U2 board
7 (2) Out OUT
Buffered Bat temp Probe signal
from BCB Bd to Monitor Bd
1. Cables connected to X3 BCB must be segregated from power circuits, double insulated and of a typical 0.5 to 1mm2 cross
section area for maximum runs between 25 and 50 meters respectively.
2. Battery temperature sensing cables must be less than 10 m long.
3. 30 and 40kVA UPS models fitted with internal battery and any UPS models fitted with Battery Start kit contain an internal UPS
battery contactor for automatic connection and disconnection of the batteries and the battery circuit breaker undervoltage coil is
not used. Refer to 2.5 - Battery Control for details.
!
CAUTION
Leave terminals open if the corresponding facility is not used. The commissioning engineer
must program the UPS accordingly (e.g., disable battery temperature compensation, enable
internal battery contactor)
Temperature
Sensor
TMP-2
+
IN
-
NC
12V
GND
OUT
UPS
Monitor
Board
– U2
X7
-12V
GND
BAT-T
Cable W2 is packed with the temperature sensor.
Name: W2 L = 30m