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NS3000 Series User Manual rev.01
TOP VIEW INTENAL SHELF BATTERY POSITION
I
FIG.2.5.B
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NS3000 Series User Manual rev.01
2.6 Control and Communication Cabling
fig. 2-6 shown, the Relay card dry contact interface (J2-J10), communication interface (RS232 interface, 485
interface and SNMP card interface) and parallel card position.
Fig 2-6 Dry contact interface and communication interface
The UPS accepts external signal from zero-voltage (dry) contacts connected through external dry contact terminals
produced and phoenix terminals. Through software programming, these signals become active when these contacts
connect to +24V to ground.The cables connected to DRY terminal must be separated from power cables. Moreover,
these cables should be double insulated with a typical 0.5 to 1.5 mm
2
cross-section area for a maximum connection
length between 25 and 50 meters.
2.6.1 Dry Contact Interface of Battery and Environmental Temperature Detection (Optional)
The input dry contact J2 and J3 can detect the temperature of batteries and environment respectively, which can be
used in environment monitoring and battery temperature compensation 1.
J2 and J3 interfaces diagram are shown in fig 2-7, the description of interface is in table 2-2.
J2
J3
Fig 2-7 Diagram of J2 and J3 dry contact for temperature detecting
Table 2-2
Position
Name
Purpose
J2.1
TEMP_BAT
Battery temperature detection
J2.2
GND
Power ground
J3.1
TEMP_ENV
Environment temperature detection
J3.2
GND
Power ground
Note:
Specified temperature sensor is required for temperature detection (R25=5kOhm, B25/50=3275),
please confirm with the manufacturer, or contact local maintenance engineers when placing an order.
