Chapter 2 Installation Guidance
Smart Tower UPS 10-30KVA User Manual
12
Location
Name
Description
J8.1
BAT_LOW_NC
Battery warning relay (normally closed) will be open during warning
J8.2
BAT_LOW_NO
Battery warning relay (normally open) will be closed during warning
J8.3
GND
Center of battery warning relay
2.6.6 Integrated alarm output dry contact Interface (Optional)
J9 is a integrated alarm output dry contact interface, when one or more alarms is/are triggered, the
system will send a integrated alarm information, it provides an auxiliary dry contact signal via the isolation
of a relay. The interface diagram is shown in fig 2-12, and description is shown in table 2-7
J9
A
L
A
R
M
_
N
C
A
L
A
R
M
_
N
O
G
N
D
Fig 2-12 Integrated alarm dry contact interface diagram
Table 2-7: Integrated alarm dry contact interface description
Location
Name
Description
J9.1
ALARM_NC Integrated warning relay (normally closed) will be open during warning
J9.2
ALARM_NO Integrated warning relay (normally open) will be closed during warning
J9.3
GND
Centre of integrated warning relay
2.6.7 Mains/Commercial power failure alarm Output Dry Contact Interface (Optional)
J10 is a output dry contact interface for mains power failure alarm, when the mains fails, the system
will send a mains failure alarm, to provide an auxiliary dry contact signal via an isolation relay. The
interface diagram is shown in fig 2-13, and the description is shown in table 2-8.
Fig 2-13 Mains failure warning dry contact interface diagram
Table 2-8 Mains failure warning dry contact interface description
Location
Name
Description
J10.1
UTI_FAIL_NC Mains failure warning relay(normally closed) will be open during warning