Chapter 2 Installation Instruction
10
RT33020/25/30KE User Manual
Fig.2-5 Dry contact &communication interface
2.5.1 Dry Contact Interface
Dry contact interface includes port J2-J9 and the functions of the dry contact are shown in
Table 2.4.
Table 2.4 Functions of the port
Port
Name
Function
J2-1
TEMP_BAT
Detection of battery temperature
J2-2
TEMP_COM
Common terminal for temperature detection
J3-1
TEMP_ENV
Detection of environmental temperature
J3-2
TEMP_COM
Common terminal for temperature detection
J4-1
+24V_DRY
+24V
J4-2
REMOTE_EPO_NC
Trigger EPO when disconnect with J4-1
J6-1
BCB_Drive
Output dry contact, function is settable.
Default: Battery trip signal
J6-2
BCB_Status
Input dry contact, function is settable.
Default: BCB Status and BCB Online,(Alert no
battery when BCB Status is invalid).
J7-1
BCB_Online
Input dry contact, function is settable.
Default: BCB Status and BCB Online(Alert no
battery when BCB Status is invalid).
J7-2
GND_DRY
Ground for +24V
J8-1
BAT_LOW_ALARM_NC
Output dry contact (Normally closed), function is
settable.
Default: Low battery alarming
J8-2
BAT_LOW_ALARM_NO
Output dry contact (Normally open), function is
settable.
Default: Low battery alarming
J8-3
BAT_LOW_ALARM_GND
Common terminal for J8-1 and J8-2
J9-1
GENERAL_ALARM_NC
Output dry contact, (Normally closed) function is
settable.
Default: Fault alarming
J9-2
GENERAL_ALARM_NO
Output dry contact, (Normally open) function is
settable.
Default: Fault alarming
J9-3
GENERAL_ALARM_GND
Common terminal for J9-1 and J9-2
