Chapter 1 Installation
MUST400_User manual_EN_REV02 User Manual
21
1.7.6 Battery Warning Output Dry Contact Interface
J8 is the output dry contact interface, which outputs the battery warnings of low or excessive voltage, when
the battery voltage is lower than set value, an auxiliary dry contact signal will be provided via the isolation of
a relay. The interface diagram is shown in fig.1-9, and description is shown in table.1-7.
J8
B
A
T
_
L
O
W
_
N
C
B
A
T
_
L
O
W
_
N
O
G
N
D
Fig.1- 9: Battery Low Warning Dry Contact
Table.1- 7: Battery warning dry contact interface description
Position
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
Commom connection
1.7.7 Integrated Warning Output Dry Contact Interface
J9 is the integrated warning output dry contact interface, when one or more than one present warning is
triggered, the system will send an integrated warning information, and provide an auxiliary dry contact signal
via the isolation of a relay. The interface diagram is shown in fig.1-10, and description is shown in table.1-8.
J9
A
L
A
R
M
_
N
C
A
L
A
R
M
_
N
O
G
N
D
Fig.1- 10: Integrated warning dry contact
