Chapter 2 Installation Instruction
26
SM 180-600 KMFX User Manual
B
C
B
_
D
R
V
B
C
B
_
C
O
N
T
J6
J7
B
C
B
_
O
N
L
+24V
+24V
+24V
Fig.2-18 BCB Port
Table 2.9 Description of BCB port
Port
Name
Function
J6-1
BCB_DRIV
BCB contact drive, pr24V voltage
，
20mA
drive signal
J6-2
BCB_Status
BCB contact status, connect with the normally
open signal of BCB
J7-1
GND_DRY
Power ground for +24V
J7-2
BCB_Online
BCB on-line input (normally open) , BCB is
on-line when the signal is connecting with J7-1
Battery Warning Output Dry Contact Interface
The default function of J8 is the output dry contact interface, which presents the battery
warnings of low or excessive voltage, when the battery voltage is lower than set value, an
auxiliary dry contact signal will be activated via the isolation of a relay. The interface diagram is
shown in Fig.2-19, and description is shown in Table 2.10.
J8
B
A
T
_
L
O
W
_
N
C
B
A
T
_
L
O
W
_
N
O
G
N
D
Fig.2-19 Battery warning dry contact interface diagram
Table2.10 Battery 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
