13
RT33020/25/30KE User Manual
Chapter 2 Installation Instruction
Table 2.8Battery warning dry contact interface description
Port
Name
Function
J8-1
BAT_LOW_ALARM_NC
Battery warning relay (normally closed) will be
open during warning
J8-2
BAT_LOW_ALARM_NO
Battery warning relay (normally open) will be
closed during warning
J8-3
BAT_LOW_ALARM_GND
Common terminal
General Alarm Output Dry Contact Interface
The default function of J9 is the general alarm output dry contact interface. When one or more
warnings are triggered, an auxiliary dry contact signal will be active via the isolation of a relay.
The interface diagram is shown in Fig.2-10, and description is shown in Table 2.10.
Fig.2-10 Integrated warning dry contact interface diagram
Table 2.9 General alarm dry contact interface description
Port
Name
Function
J9-1
GENERAL_ALARM_NC
Integrated warning relay (normally closed) will be
open during warning
J9-2
GENERAL_ALARM_NO
Integrated warning relay (normally open) will be
closed during warning
J9-3
GENERAL_ALARM_GND
Common terminal
2.5.2 Communication Interface
RS232
、
RS485 and USB port
：
Provide serial data which can be used for commissioning
and maintenance by authorized engineers or can be used for networking or integrated
monitoring system in the service room.
SNMP: Used on site installation for communication (Optional).
Intelligent card interface
：
Extension dry contact interface (Optional).
J9
A
L
A
R
M
_
N
C
A
L
A
R
M
_
N
O
G
N
D
