OPTI-UPS MD120L - Manual (Page 74)

Chapter 1 Installation
17
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 1-16 BCB Port
Table 1-6 Description of BCB port
Position Name Description
J6.1 BCB_DRV BCB actuating signal, provide the actuating signal of +18V, 20mA
J6.2 BCB_CONT BCB contact status, connect with the normally open signal of BCB
J7.1 GND Power ground
J7.2 BCB_ONL
BCB on-line –input (normally open) , BCB is on-line when the signal
is connecting with GND
1.7.5 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 1-17, 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 1-17 Battery warning dry contact interface diagram
Table 1-7 Battery warning dry contact interface description
Position Name Purpose
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 Center of battery warning relay
1.7.6 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 1-18, and description
is shown in table 1-8.