50 Chapter 7 Maintenance
NetSure 801 AG1 Power Supply System User Manual
Figure 7-8 Upload parameter
After the upload, the screen will prompt
, click
OK
to confirm.
10. Repeat procedures 7 ~9 to change the shunt coefficient 2 to
“2000/75” and the shunt coefficient 3 to “2500/75”.
Setting DIP switch
Set the DIP switch according to the label on the panel of the SM DU. The black block in the figure illustrates the
position of the DIP switch. The illustration of the DIP switch is shown in Figure 7-9.
ON
CTS
206-8
T610
CTS
206-8
T610
CTS
206-8
T610
S1
S2
S3
Switch of SM DU(B14GAU1)
Figure 7-9 Illustration of the DIP switch
Install SM DU
1. Remove the panel of the SM DU and remove the damaged SM DU.
2. Check that the setting of the DIP switch is the same as the setting illustrated in the panel label. Install the SM DU.
3. Insert the terminals of the signal and communication cables to the ports of the SM DU. Check that the controller
communicates with the SM DU.
4. Reinstall the panel of the SM DU.
7.5 Emergency Treatment
In order to keep uninterrupted DC power supply of the power supply system, some emergency measures shall be
taken to cope with the faults that threaten DC power supply.
Faults that may occur in the power supply system and cause output interrupt mainly include unrecoverable damage
to AC distribution circuit, short circuit of DC load or DC distribution, system shutdown due to breakdown of the
controller, and blockage of rectifier due to DC output overvoltage, etc.
Emergency treatment of AC distribution
In case of failure of AC power supply to rectifier due to AC distribution fault, the AC mains can be directly introduced
into the input switch of the rectifier.
