COVER serii NHS – User Manual
COMEX S.A.
15
Table 2-6 Description of Bat_Low interface outputs
Pin
Description
Purpose
J8.1
BAT_LOW_NC
Relay informing about low battery voltage level - normally
closed (J8.1 and J8.3). Opening it means low battery warning.
J8.2
BAT_LOW_NO
Relay informing about low battery voltage level - normally
open (J8.2 and J8.3). Closing it means low battery warning.
J8.3
GND
Common pin for NO / NC signals.
2.7.6. Output signal - event warning
J9 connector is a signal informing about the appearance of one or more warnings, alarms on the UPS.
The occurrence of at least one alarm on the UPS causes closing or opening of the relay contacts. Below
is an interface description and description of connections.
J9
A
L
A
R
M
_
N
C
A
L
A
R
M
_
N
O
G
N
D
Figure 2-13 Interface alarm
Table 2-7 Description of the alarm interface pins
Position
Name
Purpose
J9.1
ALARM_NC
Relay informing about the occurrence of an alarm - normally closed
(J9.1 and J9.3). Its opening means an alarm.
J9.2
ALARM_NO
Relay informing about the occurrence of an alarm - normally open
(J9.2 and J9.3). Its closure means an alarm.
J9.3
GND
Common pin for NO / NC signals.
2.7.7. Output signal - no power supply, battery operation
The J10 connector is a signal informing about the power failure at the UPS input. Below is an interface
description and description of connections.
J10
U
T
I_
F
A
IL
_N
C
U
T
I_
F
A
IL
_N
O
G
N
D
Figure 2-14 Interface of mains power supply failure