30 Chapter 3 Electrical Installation
NX UPS Single Module And Parallel System 250kVA ~ 800kVA User Manual
Intellislot 2
Intellislot 1
Intellislot 3
Dry contact ports
RS232
J32
J31
J29
J30
J16
J15
J25
J19
J13
J14
J33
J21
J20
J17
J23
J24
J22
Note: J23 reserved
Amplified view of dry contact ports
J32
J31
J29
J30
J16
J15 J25
J19 J13
J14
J33
J21
J20
J17 J23
J28 J26 J34 J38
J24
J22
Figure 3-10 Dry contact port and communication port (500kVA ~ 600kVA E)
The UPS accepts external signalling from voltage-free (dry) contacts connected to push-in input dry contact terminal
through the phoenix terminals on the bypass control module. Subject to prior software programming, the signalling is
accepted by the UPS when relevant terminals and the +12V terminals are shorted. All control cables must be routed
separately from the power cables and parallel cables, double-insulated and of a typical 0.5mm
2
to 1.5mm
2
CSA for
runs less than 30m.
3.2.2 Input Dry Contact Port
The input dry contact ports J16, J17 and J22 are shown in Figure 3-11 and described in Table 3-3. The input dry
contact voltage is 12Vdc, and the current is 10mA.
GN
D
GN
D
4
3
2
1
Figure 3-11 Input dry contact ports J16, J17 and J22
Table 3-3 Description of input dry contact ports J16 and J22
Port
Pin
Name
Description
Remark
1
GEN_M
Generator mode input. Generator mode when not connected
2 GND
Common
ground
Pins 1 and 2 have been shorted
in factory
3 RES
Reserved
J16
4 GND
Common
ground
1
Out-OB
External output switch
2 GND
Common
ground
3
Out-MB
External maintenance switch
J17
4 GND
Common
ground
Pins 3 and 4 have been shorted
in factory
1 ENV_DET
Battery room temperature relay input. Battery room
temperature abnormal when not connected
2 GND
Common
ground
3
CHG_SHVT
Charger off contact. Charger off when not connected
J22
4 GND
Common
ground
Pins 1 and 2 have been shorted,
and pins 3 and 4 have been
shorted in factory