84 Chapter 8 Option
NX UPS Single Module And Parallel System 250kVA ~ 800kVA User Manual
Note
Some electronic components on the relay card are sensitive to static electricity. To prevent static electricity from damaging the
relay card, do not touch its electronic components or circuits, also avoid their contact with live objects. Please hold the side edges
of the relay card when moving or installing it.
1. Set the DIP switch of the relay card.
Skip this step if you need not control the UPS turn-on and turn-off through the relay card.
The location of the DIP switch is shown in Figure 8-3. It is an 8-bit DIP switch. Its factory default setting is shown in
Figure 8-7.
1
2
3
4
5
6
7
8
ON
OFF
Figure 8-7 Factory default setting of the DIP switch
Bits 1 through 7 are designed for use in factory, the user is not allowed to change their default settings. Bit 8 is used
to configure the UPS turn-on and turn-off signal input function of the relay card, its setting method is described in
Table 8-3.
Table 8-3 Setting of UPS turn-on and turn-off signal input function
Bit 8
Function
ON
UPS turn-on and turn-off signal input function enabled
OFF
UPS turn-on and turn-off signal input function disabled
2. Insert the relay card into the UPS.
Note
1. The relay card should be installed in Intellislot 1 or 3 port (advisably in Intellislot 3 port).
2. The relay card is hot-pluggable, you can install it without shutting down the UPS.
1) Remove the Intellislot port cover on the front panel of the control module on the top of the UPS bypass cabinet.
back of the UPS, save the screws.
2) Align the relay card with the Intellislot port, insert the relay card into the port along the grooves on both sides of the
port.
3) Fix the relay card through the fixing holes on the relay card panel with the screws obtained in step 1.
3. Connect the cable.
You can select an optional cable according to your needs, or make the cable according to Table 8-2 and Figure 8-4 ~
Figure 8-6. Connect the cable end with a DB25 male connector to the DB25 connector of the relay card, and the
other end to the user equipment.
Warning
1. The DB25 connector must connect to SELV circuit. Failure to observe this could cause damage to the relay card and even lead
to safety accidents.
2. The external equipment must meet the electrical parameter requirement in Table 8-2, failure to observe this could cause
damage to the dry contact output terminal.
Troubleshooting
See Table 8-4 for the troubleshooting of the relay card.