11
RT33020/25/30KE User Manual
Chapter 2 Installation Instruction
Note
The settable functions for each port can be set by the monitor software.
The default functions of each port are described as follows.
Battery Warning Output Dry Contact Interface
The input dry contact J2 and J3 can detect the temperature of batteries and environment
respectively, which can be used in environment monitoring and battery temperature
compensation.
Interfaces diagram for J2 and J3 are shown in Fig.2-6, the description of interface is in Table
2.5.
J2
J3
T
E
M
P
_
B
A
T
T
E
M
P
_
E
N
V
Fig.2-6 J2 and J3 for temperature detecting
Table 2.5 Description of J2 and J3
Port
Name
Function
J2-1
TEMP_BAT
Detection of battery temperature
J2-2
TEMP_COM
common terminal
J3-1
TEMP_ENV
Detection of environmental temperature
J3-2
TEMP_COM
common terminal
Note
Specified temperature sensor is required for temperature detection (R25=5Kohm,
B25/50=3275), please confirm with the manufacturer, or contact the local maintenance
engineers when placing an order.
Remote EPO Input Port
J4 is the input port for remote EPO. It requires shorting NC and +24V during normal operation,
and the EPO is triggered when opening NC and +24V. The port diagram is shown in Fig.2-7,
and port description is shown in Table 2.6.
E
P
O
_
N
C
+
2
4
V
+24V
Fig.2-7 Diagram of input port for remote EPO
