Bcb Port; Output Dry Contact Port - Emerson Liebert NX300 Series User Manual

3.2.3 BCB Port

Ports J15, J19, J20, J21, J29, J30, J31 and J32 are BCB ports. The ports are shown in Figure 3-12 and described in
Table 3-4. J15 and J32, J19 and J31, J21 and J29, J20 and J30 constitute four groups of independent BCB ports
respectively. For single module or parallel system, only J15 and J32 are needed, other signals are invalid.
Port
J15, J19, J20, J21
J29, J30, J31, J32

3.2.4 Output Dry Contact Port

Ports J13, J14, J25 and J33 are output dry contact ports. The ports are shown in Figure 3-13 and described in
Table 3-5. The rated capacity of the output dry contacts is 240Vac/24Vdc, 5A.
The voltage of the dry contact signals connected to the J13, J14, J25 and J33 output dry contact ports may be dangerous. Before
connection, make sure that you are connecting the cable to the right port.
Port Pin
2
J13
3
4
2
J14
3
4
2
J25
3
4
2
J33
3
4
NX UPS Single Module And Parallel System 250kVA ~ 800kVA User Manual
Figure 3-12 BCB port
Table 3-4 Description of BCB port
Pin Name
1 BCB_DR BCB driver signal
2 BCB_ST BCB state signal
3 GND Common ground
4 BCB_ON BCB on line signal
1 GND Common ground
2 TMP_BAT Battery temperature
3 12V Power
4 GND Common ground
5 BAT_PE Battery ground fault signal
Figure 3-13 Output dry contact port
Table 3-5 Description of output dry contact port
Name
MFP_O Rectifier backfeed normally open contact. Open when there is no backfeed
MFP_S Rectifier backfeed common contact
MFP_C Rectifier backfeed normally closed contact. Closed when there is no backfeed
INV_O Inverter state normally open contact. Open when the inverter is normal
INV_S Inverter state common contact
INV_C Inverter state normally open contact. Closed when the inverter is normal
BFP_O Bypass backfeed normally open contact. Open when there is no backfeed
BFP_S Bypass backfeed common contact
BFP_C Bypass backfeed normally closed contact. Closed when there is no backfeed
MAIN_O Rectifier input state normally open contact. Open when the rectifier is abnormal
MAIN_S Rectifier input state common contact
MAIN_C Rectifier input state normally closed contact. Closed when the rectifier is normal
Chapter 3 Electrical Installation
Description
Only J32 is valid
Pins 4 and 5 have been shorted in factory
Warning
Description
31
Remark