Smart Tower UPS 10-30KVA User Manual
Chapter 2 Installation Guidance
11
Table 2-4 Maintenance bypass switch and output switch status interface Description
Position
Name
Description
J5.1
+24V
+24V power supply
J5.2
GEN
Connection status of generator
J5.3
GND
Power ground
2.6.4 BCB Interface (Optional)
J6 and J7 are battery circuit breaker (BCB) interface. The interface diagram is shown in fig 2-10 and
the interface description is shown in table 2-5.
B
C
B
_
D
R
V
B
C
B
_
C
O
N
T
B
C
B
_
O
N
L
Fig 2-10 BCB Interface
Table 2-5 Description of BCB Interface
Location
Name
Description
J6.1
BCB_DRV
BCB drive signal: pro24V, 20mA drive signal
J6.2
BCB_CONT BCB contact status
，
connect to BCB’s normal open signal
J7.1
GND
Power ground
J7.2
BCB_ONL
BCB online input
（
normal open
），
it shows BCB is online when this
signal connects to GND.
2.6.5 Battery voltage alarm Output Dry Contact Interface (Optional)
J8 is an output dry contact interface that outputs battery alarms. When the voltage is lower than set
value, it will provide an auxiliary dry contact signal via the isolation of a relay. The interface diagram is
shown in fig 2-11, and description is shown in table 2-6.
B
A
T
_
L
O
W
_
N
C
B
A
T
_
L
O
W
_
N
O
G
N
D
Fig 2-11 Integrated Battery alarm dry contact interface diagram
Table 2-6 Integrated Battery alarm dry contact interface description