COVER serii NHS – User Manual
COMEX S.A.
12
2.7.1. Dry Contact - sensor for detection of battery and environmental
temperature
Dry Contact J2 and J3 input signals are used to detect the temperature of the battery and the
environment at the sensor's installation location. The battery temperature sensor is used to compensate
for the temperature of the battery charging voltage. The interface design and description of connections
are shown below.
J2
J3
T
E
M
P
_B
A
T
T
E
M
P
_E
N
V
Figure 2-8 View of the DryContact J2 and J3 interface
Table 2-2 Description of DryContact J2 and J3 interface pins
Pin
Description
Purpose
J2.1
TEMP_BAT
Battery temperature detection
J2.2
GND
Ground
J3.1
TEMP_ENV
Enviroment temperature detection
J3.2
GND
Ground
Note: Use appropriate temperature sensors for proper detection (R25 = 5 Ohm, B25 / 50 = 3275), please confirm the
compatibility of parameters at the supplier at the time of ordering.
2.7.2. REPO switch port
The UPS is equipped with a REPO interface enabling remote switching off of the UPS in an emergency
situation (eg fire). The function can be activated by pressing a key on the front panel of the power supply
or remotely using the remote switch REPO.
J4 connector is used to connect the remote REPO switch. During normal operation, shorting of the NC
pin and + 24V is required. Activation of the EPO signal occurs when the NC and + 24V signal is opened
or by shorting the NO and + 24V pins. The interface design and description of connections are shown
below.
J4
E
P
O
_
N
C
+
2
4
V
E
P
O
_
N
O
+24V
E
P
O
_
N
C
+
2
4
V
+24V
J4
EP
O
_
N
O
+
2
4
V
+24V
+24V
Figure 2-9 Interface REPO
